This document discusses the use of hydraulic breakers for rock mining applications as an alternative to blasting. It provides information on how hydraulic breakers can be used for secondary reduction of oversized boulders, selective mining of different rock grades, and removing overburden more efficiently. The document also notes that hydraulic breakers allow continuous mining without interruptions for blasting and can help reduce environmental pollution. Productivity depends on factors like the rock type and discontinuity spacing, and rates may range from 50-680 tons per hour depending on the breaker model and deposit characteristics.
This document discusses several controlled blasting techniques used to control blasting results, including line drilling, pre-splitting, cushion blasting, smooth blasting, air-decking, and muffle blasting. It focuses on describing the pre-splitting technique, which involves drilling a row of holes along the final excavation line, loading them with light explosives charges, and firing them before the main blast to create a fracture zone and prevent overbreak of the wall. The document provides details on parameters for pre-splitting like hole spacing, loading density, and linear charge concentration based on hole diameter. It emphasizes the importance of selecting the right parameters for the specific rock conditions when using pre-splitting.
This document discusses rock fragmentation in mining through blasting. It describes the objectives of fragmentation and factors that control fragment size, such as specific charge, spacing and burden. It explains the mechanisms of blasting including detonation shock waves and gas pressure. Methods for quantifying and optimizing fragmentation are provided, such as mean fragment size and oversize content. A case study reports on blasting results from a Tata Steel mine in India. The document also discusses secondary blasting and modeling fragmentation using the Kuz-Ram model and software.
Blasting Vibration Assessment of Slopes_HKIEKeith Kong
Â
This document discusses methods for assessing the impact of blasting vibrations on slope stability. It describes analytical methods like pseudo-static and dynamic approaches for stability analysis. The pseudo-static approach uses a critical acceleration to model vibration effects, while the dynamic approach considers wave propagation principles. An energy approach is also presented for analyzing rock slope stability. The document provides case studies demonstrating the application of these methods. It concludes that pseudo-static and dynamic analyses provide conservative vibration limits, while the energy approach requires detailed rock characterization but may give more reasonable results.
Drilling and blasting involves different types of drilling like rotary and percussive drilling. Rotary drilling uses tricone bits and drag bits while percussive uses hammers. Factors like burden, spacing, stemming affect blast design. Explosives like TNT, dynamite and safety fuses are used. Blasted rocks undergo processes like radial cracking and flexural rupture. Controlled blasting techniques like presplitting and cushion blasting reduce overbreak. Explosives have risks but when used properly can efficiently fracture rocks for excavation.
Drilling is required to create openings in rock masses for tunneling. There are various types of drill jumbos suited for different tunnel cross-sections, including single boom, two boom, and three boom jumbos. Rock drilling uses impact and rotation to break the rock. Impact is generated by a piston striking the drill steel, while rotation is provided by a hydraulic motor or gears. Proper flushing, feed force, and bit condition influence the drilling rate. Hydraulic drifters require regular maintenance like checking for leaks and tightening bolts. Accumulators must be charged with nitrogen gas only.
In this ppt you will get all information regarding shaft sinking. Like what is permanent lining and temporary lining. How to decide shape of shaft, drilling blasting, support, lighting in shaft. Use of shaft and skips.
Underground mining methods include room-and-pillar, longwall mining, sublevel caving and block caving. Longwall mining involves completely removing the entire coal seam in one operation by leaving no pillars and allowing the roof to cave. Factors that influence the selection of an underground mining method include the deposit's size, shape, depth and geology, geotechnical properties, economic considerations, available technology, and environmental concerns. The optimal mining method maximizes resource recovery while maintaining safety and minimizing costs and environmental impacts.
The document defines key mining terminology used in open pit mine design including: bench, bench height, bench slope, berm, overall pit slope angle, haul roads, angle of repose, subcrop/ore depth, pre-production stripping, ultimate pit limits, pit scheduling, stripping ratio, single working bench, shovel in working bench, two working benches, pit sequence, and section of pit sequence. It provides illustrations of these concepts and how an example mine may develop its pit over time through sequential pushbacks.
This document discusses several controlled blasting techniques used to control blasting results, including line drilling, pre-splitting, cushion blasting, smooth blasting, air-decking, and muffle blasting. It focuses on describing the pre-splitting technique, which involves drilling a row of holes along the final excavation line, loading them with light explosives charges, and firing them before the main blast to create a fracture zone and prevent overbreak of the wall. The document provides details on parameters for pre-splitting like hole spacing, loading density, and linear charge concentration based on hole diameter. It emphasizes the importance of selecting the right parameters for the specific rock conditions when using pre-splitting.
This document discusses rock fragmentation in mining through blasting. It describes the objectives of fragmentation and factors that control fragment size, such as specific charge, spacing and burden. It explains the mechanisms of blasting including detonation shock waves and gas pressure. Methods for quantifying and optimizing fragmentation are provided, such as mean fragment size and oversize content. A case study reports on blasting results from a Tata Steel mine in India. The document also discusses secondary blasting and modeling fragmentation using the Kuz-Ram model and software.
Blasting Vibration Assessment of Slopes_HKIEKeith Kong
Â
This document discusses methods for assessing the impact of blasting vibrations on slope stability. It describes analytical methods like pseudo-static and dynamic approaches for stability analysis. The pseudo-static approach uses a critical acceleration to model vibration effects, while the dynamic approach considers wave propagation principles. An energy approach is also presented for analyzing rock slope stability. The document provides case studies demonstrating the application of these methods. It concludes that pseudo-static and dynamic analyses provide conservative vibration limits, while the energy approach requires detailed rock characterization but may give more reasonable results.
Drilling and blasting involves different types of drilling like rotary and percussive drilling. Rotary drilling uses tricone bits and drag bits while percussive uses hammers. Factors like burden, spacing, stemming affect blast design. Explosives like TNT, dynamite and safety fuses are used. Blasted rocks undergo processes like radial cracking and flexural rupture. Controlled blasting techniques like presplitting and cushion blasting reduce overbreak. Explosives have risks but when used properly can efficiently fracture rocks for excavation.
Drilling is required to create openings in rock masses for tunneling. There are various types of drill jumbos suited for different tunnel cross-sections, including single boom, two boom, and three boom jumbos. Rock drilling uses impact and rotation to break the rock. Impact is generated by a piston striking the drill steel, while rotation is provided by a hydraulic motor or gears. Proper flushing, feed force, and bit condition influence the drilling rate. Hydraulic drifters require regular maintenance like checking for leaks and tightening bolts. Accumulators must be charged with nitrogen gas only.
In this ppt you will get all information regarding shaft sinking. Like what is permanent lining and temporary lining. How to decide shape of shaft, drilling blasting, support, lighting in shaft. Use of shaft and skips.
Underground mining methods include room-and-pillar, longwall mining, sublevel caving and block caving. Longwall mining involves completely removing the entire coal seam in one operation by leaving no pillars and allowing the roof to cave. Factors that influence the selection of an underground mining method include the deposit's size, shape, depth and geology, geotechnical properties, economic considerations, available technology, and environmental concerns. The optimal mining method maximizes resource recovery while maintaining safety and minimizing costs and environmental impacts.
The document defines key mining terminology used in open pit mine design including: bench, bench height, bench slope, berm, overall pit slope angle, haul roads, angle of repose, subcrop/ore depth, pre-production stripping, ultimate pit limits, pit scheduling, stripping ratio, single working bench, shovel in working bench, two working benches, pit sequence, and section of pit sequence. It provides illustrations of these concepts and how an example mine may develop its pit over time through sequential pushbacks.
This document provides information on various topics related to tunnelling including introduction, role of geology, factors improving tunnelling, problems associated with tunnelling, future considerations, terms related to mining practices and tunnelling, tunnel service classification, methods of tunnelling, development of drills, equipment used, drilling processes, and specific drilling equipment. It discusses the importance of tunnels, describes different types of tunnels based on use and ground conditions, and outlines key factors to consider for tunnel design and construction methods.
Rocks mechanics and its application in mining geology.
It aims at enhancing the mining process and higher yielding by reducing the chance of failures by providing information about the rocks of the mining area.
This document presents revisions to the Hoek-Brown failure criterion for rock masses. It resolves uncertainties in applying the criterion and incorporating it into numerical models. The revised criterion sets out a recommended calculation sequence and defines equations to determine rock mass strength parameters like cohesive strength and friction angle from the Geological Strength Index rating of rock mass quality. It also distinguishes between undisturbed and disturbed rock masses using a new disturbance factor.
This document provides an overview of shaft sinking methods for underground mining. It discusses traditional methods like wood/steel piling and open caisson as well as more advanced techniques like vertical shaft sinking machines (VSM) and shaft boring systems. The document highlights the advantages of mechanical excavation methods like VSMs in providing higher production rates and safety compared to traditional drill and blast operations. It analyzes case studies of shafts sunk in India and concludes that using advanced technologies could have increased production rates by 30% while improving safety and reducing costs compared to conventional shaft sinking methods.
Role of Rock Mechanics in Mining Industry : Applications in Underground MiningPavan Josyula
Â
This is the technical report entitled as "Role of Rock Mechanics in Mining Industry : Applications in Underground Mining". This technical report mainly focus on the fundamentals of rock mechanics and its role in underground mining. I presume this technical report provides you a fundamental knowledge of rock mechanics focusing mainly on mining industry.
pillar design in coal mines, different pillar design approaches, salmon versus sheorey formulae, panel stability, diffrent approaches, local mine stiffness
This document discusses drilling and blasting techniques used for rock excavation. It describes the necessity of drilling holes in rock for placing explosives. The main types of drills are abrasion drills like short drills and diamond drills, and percussion drills like jackhammers and rotary drills. Factors for selecting appropriate drilling equipment include rock hardness, depth, terrain, and purpose. Explosives discussed include dynamite, ammonium nitrate, slurry, ANFO, and RDX. The blasting process involves cleaning holes, placing a primer, stemming, and detonating with a fuse or electric spark.
This document discusses two mining methods: step mining and post-pillar mining. Step mining involves creating horizontal floors to allow equipment use for deposits that are too steeply inclined. Post-pillar mining uses regularly spaced pillars to extract inclined deposits between 20-55 degrees and allows filling of the mined space. It also discusses considerations for gallery dimensions, pillar dimensions and configurations, recovery strategies, equipment used, and operational aspects of board and pillar mining.
This contains methods of exploration in rock. How the rock samplers are taken. Quality of rock samples and its reporting. Along with the laboratory tests conducting on these rock samples.
This document provides an overview of blasting in open cast mines, including the various types of explosives used. It discusses low explosives like gunpowder as well as high explosives like nitroglycerin, dynamite, ANFO, LOX, slurry, and emulsion explosives. The advantages and disadvantages of each type are outlined. The document also discusses the use of bulk explosives and various bulk delivery systems. Key conditions for safely using bulk explosives on site are described.
The document discusses the basics of drilling in mining operations, including different types of drilling methods such as mechanical percussion and rotary drilling. It describes the components and functions of drilling equipment, including the rock drill, feed equipment, drilling rods, bits, and power sources. Different drilling methods are suited for different hole sizes and rock properties in various types of mining operations.
This document provides an overview of tunnel boring machines (TBMs). It discusses that TBMs were first invented in 1863 and are also known as "moles" as they excavate tunnels with a circular cross-section. There are two main types of TBMs - hard rock TBMs and soft rock TBMs. The document then goes into detail about the construction, operation, advantages and disadvantages of TBMs. It explains the two main phases of a TBM - the tunneling phase which involves cutting through rock/soil, and the ring building phase which constructs supporting structures behind the TBM.
Explosives, Theory Of Breakage And Blasting Operationspartha sharma
Â
This document discusses explosives and blasting operations. It defines different types of explosives and their ingredients and functions. It explains how to compare explosives based on their properties like strength, detonation velocity, density etc. It describes drilling systems and the theory of rock breakage through radial cracking and flexural rupture. Finally, it discusses blast design factors and different controlled blasting techniques like line drilling, cushion blasting, smooth-wall blasting and pre-splitting used to control overbreak.
This document provides information on different types of explosives and blasting accessories used in mines. It defines explosives and classifies them based on their sensitivity, risk level, strength, and other factors. It describes various high and low explosives like dynamite, ANFO, emulsion, and their properties. It also discusses blasting accessories like non-electric and electric detonation systems, detonating cords, and their advantages. In conclusion, the document is an overview of explosives and detonation tools commonly used for rock fragmentation in mining operations.
This document provides an overview of laboratory and field testing methods for rocks. It discusses index property tests such as unit weight, porosity, permeability, electrical resistivity, and sonic velocity that are used to characterize and classify rocks. It also describes mechanical property tests like unconfined compressive strength testing, triaxial testing, point load strength testing, and beam bending tests. Common field testing methods mentioned include pressuremeter testing, in-situ direct shear testing, and hydraulic fracturing. The document provides details on sample preparation, equipment used, procedures, and how to calculate and interpret results for different rock property tests.
This PPT contains data related to Drilling, its necessity, its types, precautions during drilling, Selection of Drilling method and Equipment & Factors Affecting the optimum drilling pressure.
This brochure describes the use of Atlas Copco hydraulic breakers for mining applications such as secondary reduction of oversize boulders, selective mining, removing overburden, and rock mining without blasting. Hydraulic breakers provide an economical and safe alternative to blasting, allowing continuous operations, improved productivity and quality, and reduced environmental impact. The suitability of hydraulic breakers depends on the specific quarry and rock conditions, and a case-by-case analysis is recommended to determine if they represent a viable alternative to blasting.
Surface coal mining uses large earth-moving equipment like drills, shovels, draglines, and trucks. Blasting is used to break up overburden and rock above coal seams. Rotary drills quickly drill patterns for blasting. Track drills are used for presplit drilling and mine expansion. Shovels and draglines remove broken material and load trucks. Trucks haul coal and waste rock. Support equipment like dozers grade roads and move material.
This document provides information on various topics related to tunnelling including introduction, role of geology, factors improving tunnelling, problems associated with tunnelling, future considerations, terms related to mining practices and tunnelling, tunnel service classification, methods of tunnelling, development of drills, equipment used, drilling processes, and specific drilling equipment. It discusses the importance of tunnels, describes different types of tunnels based on use and ground conditions, and outlines key factors to consider for tunnel design and construction methods.
Rocks mechanics and its application in mining geology.
It aims at enhancing the mining process and higher yielding by reducing the chance of failures by providing information about the rocks of the mining area.
This document presents revisions to the Hoek-Brown failure criterion for rock masses. It resolves uncertainties in applying the criterion and incorporating it into numerical models. The revised criterion sets out a recommended calculation sequence and defines equations to determine rock mass strength parameters like cohesive strength and friction angle from the Geological Strength Index rating of rock mass quality. It also distinguishes between undisturbed and disturbed rock masses using a new disturbance factor.
This document provides an overview of shaft sinking methods for underground mining. It discusses traditional methods like wood/steel piling and open caisson as well as more advanced techniques like vertical shaft sinking machines (VSM) and shaft boring systems. The document highlights the advantages of mechanical excavation methods like VSMs in providing higher production rates and safety compared to traditional drill and blast operations. It analyzes case studies of shafts sunk in India and concludes that using advanced technologies could have increased production rates by 30% while improving safety and reducing costs compared to conventional shaft sinking methods.
Role of Rock Mechanics in Mining Industry : Applications in Underground MiningPavan Josyula
Â
This is the technical report entitled as "Role of Rock Mechanics in Mining Industry : Applications in Underground Mining". This technical report mainly focus on the fundamentals of rock mechanics and its role in underground mining. I presume this technical report provides you a fundamental knowledge of rock mechanics focusing mainly on mining industry.
pillar design in coal mines, different pillar design approaches, salmon versus sheorey formulae, panel stability, diffrent approaches, local mine stiffness
This document discusses drilling and blasting techniques used for rock excavation. It describes the necessity of drilling holes in rock for placing explosives. The main types of drills are abrasion drills like short drills and diamond drills, and percussion drills like jackhammers and rotary drills. Factors for selecting appropriate drilling equipment include rock hardness, depth, terrain, and purpose. Explosives discussed include dynamite, ammonium nitrate, slurry, ANFO, and RDX. The blasting process involves cleaning holes, placing a primer, stemming, and detonating with a fuse or electric spark.
This document discusses two mining methods: step mining and post-pillar mining. Step mining involves creating horizontal floors to allow equipment use for deposits that are too steeply inclined. Post-pillar mining uses regularly spaced pillars to extract inclined deposits between 20-55 degrees and allows filling of the mined space. It also discusses considerations for gallery dimensions, pillar dimensions and configurations, recovery strategies, equipment used, and operational aspects of board and pillar mining.
This contains methods of exploration in rock. How the rock samplers are taken. Quality of rock samples and its reporting. Along with the laboratory tests conducting on these rock samples.
This document provides an overview of blasting in open cast mines, including the various types of explosives used. It discusses low explosives like gunpowder as well as high explosives like nitroglycerin, dynamite, ANFO, LOX, slurry, and emulsion explosives. The advantages and disadvantages of each type are outlined. The document also discusses the use of bulk explosives and various bulk delivery systems. Key conditions for safely using bulk explosives on site are described.
The document discusses the basics of drilling in mining operations, including different types of drilling methods such as mechanical percussion and rotary drilling. It describes the components and functions of drilling equipment, including the rock drill, feed equipment, drilling rods, bits, and power sources. Different drilling methods are suited for different hole sizes and rock properties in various types of mining operations.
This document provides an overview of tunnel boring machines (TBMs). It discusses that TBMs were first invented in 1863 and are also known as "moles" as they excavate tunnels with a circular cross-section. There are two main types of TBMs - hard rock TBMs and soft rock TBMs. The document then goes into detail about the construction, operation, advantages and disadvantages of TBMs. It explains the two main phases of a TBM - the tunneling phase which involves cutting through rock/soil, and the ring building phase which constructs supporting structures behind the TBM.
Explosives, Theory Of Breakage And Blasting Operationspartha sharma
Â
This document discusses explosives and blasting operations. It defines different types of explosives and their ingredients and functions. It explains how to compare explosives based on their properties like strength, detonation velocity, density etc. It describes drilling systems and the theory of rock breakage through radial cracking and flexural rupture. Finally, it discusses blast design factors and different controlled blasting techniques like line drilling, cushion blasting, smooth-wall blasting and pre-splitting used to control overbreak.
This document provides information on different types of explosives and blasting accessories used in mines. It defines explosives and classifies them based on their sensitivity, risk level, strength, and other factors. It describes various high and low explosives like dynamite, ANFO, emulsion, and their properties. It also discusses blasting accessories like non-electric and electric detonation systems, detonating cords, and their advantages. In conclusion, the document is an overview of explosives and detonation tools commonly used for rock fragmentation in mining operations.
This document provides an overview of laboratory and field testing methods for rocks. It discusses index property tests such as unit weight, porosity, permeability, electrical resistivity, and sonic velocity that are used to characterize and classify rocks. It also describes mechanical property tests like unconfined compressive strength testing, triaxial testing, point load strength testing, and beam bending tests. Common field testing methods mentioned include pressuremeter testing, in-situ direct shear testing, and hydraulic fracturing. The document provides details on sample preparation, equipment used, procedures, and how to calculate and interpret results for different rock property tests.
This PPT contains data related to Drilling, its necessity, its types, precautions during drilling, Selection of Drilling method and Equipment & Factors Affecting the optimum drilling pressure.
This brochure describes the use of Atlas Copco hydraulic breakers for mining applications such as secondary reduction of oversize boulders, selective mining, removing overburden, and rock mining without blasting. Hydraulic breakers provide an economical and safe alternative to blasting, allowing continuous operations, improved productivity and quality, and reduced environmental impact. The suitability of hydraulic breakers depends on the specific quarry and rock conditions, and a case-by-case analysis is recommended to determine if they represent a viable alternative to blasting.
Surface coal mining uses large earth-moving equipment like drills, shovels, draglines, and trucks. Blasting is used to break up overburden and rock above coal seams. Rotary drills quickly drill patterns for blasting. Track drills are used for presplit drilling and mine expansion. Shovels and draglines remove broken material and load trucks. Trucks haul coal and waste rock. Support equipment like dozers grade roads and move material.
Tunnel-boring machines are the primary gear for the development of trenchless underground designing tasks, for example, rail travel, civil designing, railroad tunnels, and so on. This paper reviews various tunnel boring machine types, cutting tools, and machine performance through several case studies.
The document summarizes shaft sinking methods for underground mining. It defines shaft sinking as the excavation of a vertical or inclined opening from the surface for transport of materials, ventilation, pumping water, and hoisting ore. Conventional shaft sinking involves drilling, blasting, mucking out debris, installing temporary supports like timber boards or steel rings, and eventually permanent concrete lining. Newer mechanical methods using vertical shaft machines or tunnel boring machines can significantly increase safety and productivity compared to conventional drilling and blasting. Selecting the appropriate sinking method depends on factors like depth, geology, costs, and available technology.
This document discusses principles of rock drilling for excavation by blasting. It describes two main drilling methods - rotary drilling and percussive drilling. Rotary drilling can be further divided into rotary cutting and rotary crushing using different drill bits. It is commonly used for large blast holes but has limitations in drilling non-vertical holes. Percussive drilling breaks rock through hammering impacts generated by pneumatic or hydraulic rock drills and transmits energy to the drill bit.
This document discusses different methods for drilling blast holes in rock for excavation purposes. It describes rotary drilling which uses rotation to cut or crush rock with drill bits. Rotary drilling is best for softer rocks and produces larger diameter holes but cannot drill at angles from vertical. Percussive drilling uses hammering impacts from pneumatic or hydraulic rock drills to break rock and can drill angled holes better than rotary drilling. The document provides an overview of key parameters for planning blast hole drilling and compares products from Atlas Copco for different applications.
Shovel and dumper combination is a type of heavy equipment used in open cast mining operations. It is composed of two separate machines, a front-end loader (shovel) and a backhoe (dumper). The shovel is used to scoop ore, rock, or other materials out of the mine, while the dumper carries the load to a designated area for further processing. This combination of machines allows for faster and more efficient mining operations, as the shovel can quickly scoop up large quantities of material, while the dumper can move the load quickly and safely. The shovel and dumper combination is an indispensable asset for any open cast mine, allowing for fast, efficient, and safe extraction of materials.
This document discusses various mining methods and technologies. It describes longwall mining, continuous mining equipment, surface and underground mining methods. It provides examples of typical mining operations and modeling a mineral field. It discusses blasting methods and advanced longwall mining. It focuses on rock reinforcement techniques like rock bolting and shotcreting. It also describes tunnel boring machines and their use in hard rock tunneling. Organo-mineral foam is discussed for strata consolidation and rock reinforcement.
The document describes a new downhole cavitation tool called the KROT-CT that uses hydrodynamic cavitation rather than piston-driven mechanics to generate strong vertical impacts on the drill bit. This allows it to overcome limitations of previous percussion tools by improving performance, flexibility, and reliability. The KROT-CT can help increase drilling rates in difficult conditions, borehole quality, footage drilled between trips, and rig efficiency while reducing vibrational stresses and non-productive time.
Impact crusher used in the coal industrysmilewei005
Â
Impact crushers are well-suited for use in coal processing applications given coal's fragile and easy-to-crush properties compared to stone. The PFW series impact crusher in particular can effectively crush coal. Cone crushers are less suitable for coal as their working principle is not well-suited to coal's properties and they have lower efficiency and higher energy consumption than impact crushers. Proper maintenance and timely replacement of wear parts is important for crushers used in coal processing to ensure long term operation.
This document discusses drilling and production operations in the petroleum industry. It describes the current drilling techniques used, which involve using rigs to rotate drill bits and circulate drilling muds. Problems with current drilling methods include downtime from dull bits and formation fluid leakage. The document also discusses the components and environmental impacts of drilling muds. It then summarizes the typical components and process of offshore production facilities, using the Sable Island gas project as an example. The project involves multiple unmanned satellite platforms connected to a central manned complex.
Oil and gas industry is changing and moving to deep and ultra deep water which come with new challenges for the current risers design . so i proposed a new design which will change the industry and help drill oil and gas in ultra deep waters
This document discusses power shovels, which are large excavating machines that dig earth and load it into trucks. It describes the key parts of a power shovel including the bucket, boom, and housing. Power shovels can be either wheel-mounted or crawler-mounted depending on how they are designed to move. Factors that influence the output of a power shovel include the material being excavated, depth of cut, angle of swing, management conditions, size of hauling units, and operator skill. Power shovels are suitable for excavating softer materials and can remove large boulders. Their typical uses include digging in gravel pits, roadworks, and removing overburden.
The document provides information on various mining equipment used for both surface and underground mining. It describes the bucket wheel excavator (BWE) which is a large continuous mining machine that excavates and loads material using a rotating wheel with buckets. It also discusses power shovels which operate cyclically to load and haul material. For underground mining, it outlines the shearer, a cutting machine used in longwall mining, and load-haul-dump trucks (LHDs) which are used to transport excavated material cyclically within the mine.
1) The document discusses technologies for decreasing losses when mining stratified deposits like oil shale deposits in Estonia. Selective mining, crushing, and separation techniques have been tested that show potential for reducing mining losses.
2) Rock crushing and screening simulations were used to optimize rock fractions. Additional technologies analyzed for reducing losses include mine backfilling, fine separation of oil shale, and optimized drilling and blasting.
3) The tested methods all show potential for reducing losses depending on how the mined material is used. Questions around maintaining stable material flows and how quality fluctuations impact final yields still need to be addressed.
This document discusses technologies for decreasing losses from mining oil shale in Estonia. It analyzes selective mining methods like surface miners, longwall miners, and shortwall miners that can extract the oil shale more precisely and reduce losses compared to traditional ripping. Selective crushing methods like impact crushers and axial crusher buckets are also explored to optimize rock fractions. Additional technologies investigated include mine backfilling to reduce surface waste, fine material separation through jigging or cycloning, and optimized rock crushing and screening simulations. The analyses found that selective extraction with surface miners and longwall or shortwall miners has the potential to significantly reduce mining losses from 12% to below 5%. Overall, the tested technologies could help increase the amount of extracted
This document provides information on roller compacted concrete (RCC). It defines RCC as a no-slump concrete that is compacted with vibratory rollers. RCC has similar ingredients as conventional concrete but with a drier mix that allows it to be compacted. It discusses how RCC is constructed without joints, forms, finishing, dowels or steel reinforcement, making it simple and economical. The document then discusses the uses of RCC for roads, dams, and other applications and provides details on mix design, placement, compaction, and curing of RCC.
Quarry crusher superior performance characteristicsmgrinding
Â
Advantages jaw quarry shredder must be given the portrayal of positive beneficial effects of plants, production, treatment and protection, so the role of environmental protection and energy saving, but it can also bring a wealth of economic interests.
A short description of Highwall Mining and its performance and application. The details of the equipments and the mining procedure are mentioned. Hope it will help you guys!
Storytelling is an incredibly valuable tool to share data and information. To get the most impact from stories there are a number of key ingredients. These are based on science and human nature. Using these elements in a story you can deliver information impactfully, ensure action and drive change.
LA HUG - Video Testimonials with Chynna Morgan - June 2024Lital Barkan
Â
Have you ever heard that user-generated content or video testimonials can take your brand to the next level? We will explore how you can effectively use video testimonials to leverage and boost your sales, content strategy, and increase your CRM data.🤯
We will dig deeper into:
1. How to capture video testimonials that convert from your audience 🎥
2. How to leverage your testimonials to boost your sales đź’˛
3. How you can capture more CRM data to understand your audience better through video testimonials. đź“Š
Recruiting in the Digital Age: A Social Media MasterclassLuanWise
Â
In this masterclass, presented at the Global HR Summit on 5th June 2024, Luan Wise explored the essential features of social media platforms that support talent acquisition, including LinkedIn, Facebook, Instagram, X (formerly Twitter) and TikTok.
The Evolution and Impact of OTT Platforms: A Deep Dive into the Future of Ent...ABHILASH DUTTA
Â
This presentation provides a thorough examination of Over-the-Top (OTT) platforms, focusing on their development and substantial influence on the entertainment industry, with a particular emphasis on the Indian market.We begin with an introduction to OTT platforms, defining them as streaming services that deliver content directly over the internet, bypassing traditional broadcast channels. These platforms offer a variety of content, including movies, TV shows, and original productions, allowing users to access content on-demand across multiple devices.The historical context covers the early days of streaming, starting with Netflix's inception in 1997 as a DVD rental service and its transition to streaming in 2007. The presentation also highlights India's television journey, from the launch of Doordarshan in 1959 to the introduction of Direct-to-Home (DTH) satellite television in 2000, which expanded viewing choices and set the stage for the rise of OTT platforms like Big Flix, Ditto TV, Sony LIV, Hotstar, and Netflix. The business models of OTT platforms are explored in detail. Subscription Video on Demand (SVOD) models, exemplified by Netflix and Amazon Prime Video, offer unlimited content access for a monthly fee. Transactional Video on Demand (TVOD) models, like iTunes and Sky Box Office, allow users to pay for individual pieces of content. Advertising-Based Video on Demand (AVOD) models, such as YouTube and Facebook Watch, provide free content supported by advertisements. Hybrid models combine elements of SVOD and AVOD, offering flexibility to cater to diverse audience preferences.
Content acquisition strategies are also discussed, highlighting the dual approach of purchasing broadcasting rights for existing films and TV shows and investing in original content production. This section underscores the importance of a robust content library in attracting and retaining subscribers.The presentation addresses the challenges faced by OTT platforms, including the unpredictability of content acquisition and audience preferences. It emphasizes the difficulty of balancing content investment with returns in a competitive market, the high costs associated with marketing, and the need for continuous innovation and adaptation to stay relevant.
The impact of OTT platforms on the Bollywood film industry is significant. The competition for viewers has led to a decrease in cinema ticket sales, affecting the revenue of Bollywood films that traditionally rely on theatrical releases. Additionally, OTT platforms now pay less for film rights due to the uncertain success of films in cinemas.
Looking ahead, the future of OTT in India appears promising. The market is expected to grow by 20% annually, reaching a value of â‚ą1200 billion by the end of the decade. The increasing availability of affordable smartphones and internet access will drive this growth, making OTT platforms a primary source of entertainment for many viewers.
Taurus Zodiac Sign: Unveiling the Traits, Dates, and Horoscope Insights of th...my Pandit
Â
Dive into the steadfast world of the Taurus Zodiac Sign. Discover the grounded, stable, and logical nature of Taurus individuals, and explore their key personality traits, important dates, and horoscope insights. Learn how the determination and patience of the Taurus sign make them the rock-steady achievers and anchors of the zodiac.
At Techbox Square, in Singapore, we're not just creative web designers and developers, we're the driving force behind your brand identity. Contact us today.
IMPACT Silver is a pure silver zinc producer with over $260 million in revenue since 2008 and a large 100% owned 210km Mexico land package - 2024 catalysts includes new 14% grade zinc Plomosas mine and 20,000m of fully funded exploration drilling.
How MJ Global Leads the Packaging Industry.pdfMJ Global
Â
MJ Global's success in staying ahead of the curve in the packaging industry is a testament to its dedication to innovation, sustainability, and customer-centricity. By embracing technological advancements, leading in eco-friendly solutions, collaborating with industry leaders, and adapting to evolving consumer preferences, MJ Global continues to set new standards in the packaging sector.
Zodiac Signs and Food Preferences_ What Your Sign Says About Your Tastemy Pandit
Â
Know what your zodiac sign says about your taste in food! Explore how the 12 zodiac signs influence your culinary preferences with insights from MyPandit. Dive into astrology and flavors!
Event Report - SAP Sapphire 2024 Orlando - lots of innovation and old challengesHolger Mueller
Â
Holger Mueller of Constellation Research shares his key takeaways from SAP's Sapphire confernece, held in Orlando, June 3rd till 5th 2024, in the Orange Convention Center.
Industrial Tech SW: Category Renewal and CreationChristian Dahlen
Â
Every industrial revolution has created a new set of categories and a new set of players.
Multiple new technologies have emerged, but Samsara and C3.ai are only two companies which have gone public so far.
Manufacturing startups constitute the largest pipeline share of unicorns and IPO candidates in the SF Bay Area, and software startups dominate in Germany.
2. Atlas Copco hydraulic breakers in the quarry
Carrier weight class (tons)
HB 7
000
In modern rock mining operations, each step in the process
is subject to profitability analysis. Overall, hydraulic
breakers are often the most economical and safest option.
120
75
0
MB 7
00
MB 1
200
MB 1
000
MB 1
SB 3
00
50
Our team would be pleased to provide advice and information on your personal requirements.
Stationary
boom
25
SB 4
The service we offer is rounded off by an individual estimate
of operating costs for using hydraulic breakers to mine rock
without blasting.
700
Finally, there are no two identical quarries anywhere in the
world, so whether the use of hydraulic breakers represents
a viable alternative has to be analyzed on a case by case
basis. We provide a questionnaire on the key data required.
HB 2
500
50
HB 2
200
The illustration on the right shows the recommended
assignment of hydraulic breakers to specific jobs.
HB 3
000
When you use Atlas Copco hydraulic breakers, you benefit
from our many years of experience in assessing rock mining
methods around the globe.
800
200
HB 4
Environmental protection regulations and restrictions
are prompting many quarry operators to look at alternative mining methods. Rock mining companies all over the
world have already enjoyed great success using heavy-duty
hydraulic breakers for primary rock breaking as a substitute
for blasting.
Secondary reduction
Using hydraulic breakers to remove the overburden allows
the entire deposit to be utilized.
HB 5
100
Selective overburden
Selective mining with heavy-duty hydraulic breakers is a
worthwhile consideration in many quarries, as it frequently
allows improved material grades to be mined which bring
higher sales revenue.
Primary rock breaking
One standard application is secondary reduction of oversize
boulders in the rock pile. The use of hydraulic breakers here
has made safety problems a thing of the past.
3. Secondary reduction of oversize
boulders with hydraulic breakers
Whenever blasted rock is too big to be handled by loading
equipment or fed through the crusher, secondary reduction
is required. Even with the most advance blasting techniques, it is inevitable that there will be oversize boulders,
and these need to be broken as economically as possible.
Hydraulic breakers are particularly suitable for
quarries where
• loading is primarily done by wheel loaders
• backhoe loaders are used
• heavy-duty excavators with service weights upward of
150 t are in use
• conditions make a high percentage of oversize boulders
inevitable
• the rock to be loaded is very tough, or
• secondary reduction work is sub-contracted.
secondary reduction breaker on a mobile
carrier provides a flexible unit which can
be used at several points in the quarry.
Breaking performance depends largely
on the operator. The more experienced
the operator, the higher the productivity.
That’s why we always recommend using
permanent staff members for this work.
In many cases, oversize boulders can be
sold profitably for use in embankments,
dry walls or as breakwater rocks. In suitable rock types, hydraulic breakers can be
used to create appropriate blocks.
Atlas Copco hydraulic breakers can be used to reduce boulders in the rock pile or on the primary crusher. Mounting the
4. Secondary reduction performance figures
The diagram shows guideline figures which can be achieved using hydraulic breakers for secondary reduction.
Model Secondary reduction performance in t/h
MB 1200
  60 - 190
MB 1700
  80 - 250
HB 2200
Oversize boulders
  110 - 330
HB 2500
  120 - 350
HB 3000
  140 - 420
HB 4200
  180 - 540
HB 5800
  200 - 610
HB 7000
  230 - 680
0
100
200
300
400
Non-binding guideline values
The figures are based on performances achieved in practical operations.
Secondary reduction performance
Examples of rock type
High
Shell limestone, sandstone, slate, gneiss, marble
Average
Limestone, dolomite, greywacke
Low
Lava, porphyry, diabase, basalt, granite
The characteristics of the rock – brittle or tough – have a major
influence on reduction performance. Brittle rock types can be
more easily broken by hydraulic breaker than tough types. For
majority of secondary reduction applications, blunt tools have
proven most effective. The table lists examples of rock types.
Selecting the most suitable Atlas Copco hydraulic breaker is
based on the average volume of oversize boulders involved. It
is important that a big enough breaker be selected, as reduction performance is directly related to single blow energy. A
high impact frequency is less important, as a higher blow rate
will not result in the rock breaking if the single blow energy is
insufficient.
On the other hand, reduction performance does not automatically increase with service weight. For example, a breaker
which is twice as heavy as another will not necessarily deliver
twice the reduction performance. One reason for this is that
the breaking unit’s cycle times will lengthen as equipment size
increases.
Please contact our applications advisors for more information on
breaker selection.
500
600
700
t / h
5. Secondary breaking examples
Type of rock: basalt
Atlas Copco hydraulic breaker
HB 3000 Dust
Block size in m3
1-4
Average end size (mm)
600-800
Block breaking rate (tons/h)
180-220
Type of rock: marble
Atlas Copco hydraulic breaker
HB 2200 Dust
Block size in m3
1-2
Average end size (mm)
600-800
Block breaking rate (tons/h)
290-310
Type of rock: limestone
Atlas Copco hydraulic breaker
HB 7000 Dust
Block size in m3
2-6
Average end size (mm)
600-800
Block breaking rate (tons/h)
400-500
6. Selective mining
different rock grades
in the deposit
mining unit
Selective mining allows different rock grades to be removed
separately from an inhomogeneous deposit.
Deposits with high impurity levels and distinct fault zones can
be very difficult to mine and result in raw materials of sharply
differing grades. However, technical and economic requirements call for a flow of material from the mine of largely
consistent quality. Added to this is the need to obtain the
maximum yield from a deposit. Systematic quality control is
thus increasingly important for many rock mining operations.
Selective mining with a heavy-duty hydraulic breaker
makes sense when:
• special demands are made on mineral purity
• higher product quality provides higher sales revenues
• sharp fluctuations in raw material properties result in
higher processing costs
• losses from mining must be minimized
• special demands are made on the grain distribution of the
mined rock (e.g. to avoid excessive fines)
Selective mining and blasting
It is virtually impossible to selectively mine rock from damaged, fissured or complex seamed deposits by drilling and
blasting. Drilling and loading costs are increased, and there
is a significant risk of damage or injury from flyrock. Blasting
mixes the rock grades together and makes it impossible to
extract the higher value grades separately.
Breaker as flexible mining unit
Using hydraulic breakers as flexible mining units, deposits
can be mined selectively regardless of the complexity or
direction of the seams. Breakers are for more adaptable to
operating conditions than rippers and cause a lower percentage of fines than blasting.
Operations using breakers for selective
mining frequently have the following
characteristics:
• Mining spread out over a wider area at
several points
• Lower bench heights
• Flexible mining units
• Flexible organization
Integration in existing operations
Heavy-duty hydraulic breakers can also
be used to great effect for selective
mining in quarries using blasting or other
methods, such as ripping. The hydraulic
breaker is used to extract rock selectively
from certain parts of the quarry, while
conventional methods continue to be used
to mine more straightforward deposits.
7. Removing overburden
direction of mining
overburden
mining unit
deposit
Before open pit deposits can be mined, the earth or clay
overburden has to be removed. This is done continuously or
in phases. The overburden is kept and reused subsequently
for restoration.
Once the overburden has been removed, ramps and
benches have to be built. As this work frequently takes
place in the border areas of the mine, drilling and blasting
involves considerable outlay. With no benches in place, it is
very difficult for the drill rig to access the overburden, which
can be several meters deep. Added to the loss of tools
and drill rods in fissured deposits come the risks of injury
and equipment damage from flyrock. In many cases, public
roads and paths have to be closed, which can cause major
problems on heavily used routes.
The costs of initial work impact the profitability of the overall mining operation.
Using a heavy-duty hydraulic breaker, the costs of removing
overburden can be reduced and the work carried out faster
with more flexibility.
In many cases, the yield from a deposit can be increased
because selective removal with a breaker allows materials
to be extracted which would normally have been removed
along with the overburden by conventional methods. Opening
up mines without the use of explosives can also simplify
approval procedures.
8. Rock mining without blasting
Methods of mining without blasting
Rock quarries are long-term projects in which deposits are
usually mined over several decades. These quarries are part
of the landscape, and during operations residential developments often expand up to the edges of the site.
• Avoiding restrictions to operations
• Simplifying the renewal of mining
permits
• Maintaining profitability
• Increasing demands on product quality
The use of explosives to mine the rock then becomes a
source of annoyance to residents, even though blasting
techniques are being continuously optimized.
A large number of conditions need to be
investigated before a successful switch
to mining with hydraulic breakers can be
made.
Mining methods without blasting are therefore becoming
increasingly widespread. There are three basic methods:
• Ripping with hydraulic excavators and crawler rippers
• Cutting with surface miners in medium-hard rock
• Breaking with hydraulic breakers
Deliberations for changing to the use of hydraulic
breakers for mining
The performance capacity and adaptability of heavy-duty
hydraulic breakers make them an interesting and less controversial alternative for the mining of raw materials.
Possible reasons for switching mining methods:
• Changes in the law
• Environmental requirements
• Safety considerations which make the use of
explosives difficult
On-site conditions, such as the type and
structure of the surrounding rock, the
materials to be mined and the volumes
involved are just the tip of the iceberg.
Major factors in any changeover are the
equipment, staff available and the mine
layout.
Future requirements must also be taken
into account, e.g. planned investments
may need to be reconsidered. It is also
better to restructure the quarry to smaller
bench heights to provide optimum working conditions for the breaker/carrier unit.
And the issue of subsequent restoration
must also be considered.
9. Reducing environmental pollution
• by eliminating blasting emissions
• by simplifying the mining of existing
resources
• by simplifying the restoration of the site
upon closure
• by protecting the surrounding rock
Summary:
Rock mining with heavy-duty hydraulic
breakers is not recommended in every
case. For operations with an output of up
to 600,000 tpy, feasibility studies should
be carried out to show whether the use
of heavy-duty hydraulic breakers represent an economic alternative to blasting.
Higher annual volumes may require additional mining units.
Any comparison of blasting and the use of heavy-duty
hydraulic breakers must take in all the relevant aspects. It
is not enough to simply compare the costs of extracting the
rock. The entire process from mining the rock – depending
on the quarry layout – to saleable product must stand up to
economic analysis.
It is important to include the entire process in these analyses, from mining to
finished product.
But deliberations on switching methods involve even more
aspects. Central topics include:
Enhancing productivity
• by allowing continuous operations without interruptions
for blasting and clearing
• by obtaining the optimal yield from the approved mining
volume
• by reducing the load on the primary crusher, as preliminary
reduction is effected by the hydraulic breaker
• by increasing the primary crusher throughput
• by allowing more flexible planning
Minimizing costs
• by reducing the security outlay required to store explosives
• by downsizing or completely eliminating the primary crusher
• by enabling the use of continuous conveying systems
• by simplifying approval procedures with authorities
Improving quality
• by reducing the amount of fines and thus increasing sales
revenue in cases where minimum grain sizes are specified
• by reliably controlling grain size distribution
• by allowing reproducible qualities
• by allowing the selective mining of deposits
10. Rock mining blasting:
Rock mining withoutwithout blasting:
Average mining rate
Average mining rate
Phyllite
Slate Marble
Marble
Slate
unsuitable
Metamorphic
Metamorphic
Gneiss Phyllite
Gneiss
unsuitable
Breakdown by
Breakdown by rock type rock type
Type a
Type a
Type b
Type b
Granite Type c
Type c
Sedimentary
Sedimentary
Platy
Platy limestone limestone
Sandstone
Sandstone
Sedimentary
Sedimentary
Limestone
Limestone
Greywacke
Greywacke
Dolomite Dolomite
MagmaticMagmatic
Lava Granite
Lava
Diabase Diabase
Basalt
Gabbro Gabbro
Syenite
Basalt
Syenite
Quartz
Quartz porphyry porphyry
Depo
Solid, compact rock formation
Solid, compact rock formation
10
Discontinuity spacing
Discontinuity spacing
1m
fissured ro
1m
11. Mining rate (t/h)
incl. servicing
HB 7000
HB 5800
HB 4200
HB 3000
t/h
t/h
280
220
170
240
190
140
120
180
140
100
90
140
110
80
70
120
90
70
60
100
80
60
50
Mining rate
highly suitable
t/h
360
suitable
t/h
a
b
c
90
Deposit characteristics
fissured rock formation
highly fissured rock formation
0.4 m and less
11
12. Rock mining without blasting –
no two quarries are alike!
The diagram shows the correlation between mining rate and
deposit characteristics. The rates that can be achieved vary
from one application to the next.
Breaker productivity largely depends on
• the discontinuity persistence of the deposit, and
• the fracture characteristics of the rock
When assessing mining rates, the discontinuity persistence
or bond strength of the rock is of greater significance than
its compressive strength. It is not necessarily possible to
draw conclusions about mining rate from the compressive
strength of the rock.
In mines using blasting, it must be considered that the rock
may be loosened by cracks resulting from blasting. For more
information, please consult our applications specialists.
Example: HB 4200 in limestone,
fissured deposit
1.Select rock – common rock types have
been classified a , b or c depending
on fracture characteristics. In this example, the limestone is class ( b ).
2.Highlight line b .
3.Compare quarry face with photos – in
this example, the face which most
resembles photo 3.
4.Draw lines upward from the two corners
of the photo until they intersect with the
highlighted rock line.
5.Draw horizontal lines from each of these
intersections as far as the performance
data for the relevant breaker sizes at the
right hand edge of the diagram.
6.The lines mark the upper and lower
average productivity limits; in the case
of the HB 4200, these are between
70 and 80 tons.
Rock mining without blasting:
Average mining rate
Mining rate (t/h)
incl. servicing
HB 7000
Breakdown by rock type
HB 5800
HB 4200
HB 3000
t/h
Phyllite
Slate
220
170
190
140
120
180
140
100
90
140
110
80
70
120
90
70
60
100
80
60
50
highly suitable
unsuitable
Gneiss
280
240
Metamorphic
t/h
360
suitable
t/h
t/h
Marble
Type a
Sedimentary
Platy limestone
Mining rate
Sandstone
Sedimentary
a
Limestone
2
Type b
Greywacke
1
Dolomite
b
5
Magmatic
Lava
Granite
Diabase
Basalt
Gabbro
c
Type c
Syenite
4
90
Quartz porphyry
Deposit characteristics
3
Solid, compact rock formation
Discontinuity spacing
12
fissured rock formation
1m
highly fissured rock formation
0.4 m and less
6
13. Productivity of
hydraulic breakers
This brochure describes the use of Atlas Copco hydraulic
breakers in mining applications:
The following factors exert a major influence on hydraulic breaker efficiency:
• Secondary reduction (oversize boulders)
• Selective mining
• Removing overburden
• Rock mining without blasting
• The rock/deposit type impacts decisively
on productivity and wear.
• Operating conditions have a key effect
on profitability.
• The influence of the carrier/breaker
operator is often neglected in production figures. Skilled and experienced
operators are needed to achieve satisfactory performances.
The job descriptions and information on production performance are intended to help you select a suitable breaker from
our range.
The performance date provided is long term averages
calculated from a wide variety of applications, not guarantees. The productivity and profitability of a hydraulic breaker
always depends on the specific application.
To find out more, contact your local Atlas
Copco representative, who will consult
the applications specialists at Atlas Copco
to provide more detailed information for
your specific requirements.
Factors influencing
productivity
Geology
(rock and
deposit)
Productivity
of
hydraulic
breaker
Mining unit
(breaker and
carrier)
Conditions
(operation, servicing,
organization)
13
16. Job Example 1
Job description:
Rock type:
Limestone
Rock structure:
Mainly homogeneous, only a few areas with
tectonic faults
Particularities:
Blasting prohibited in some areas of the deposit
Solution:
Carrier:
44 t, 224 kW
Atlas Copco hydraulic breaker:
HB 4200
Production data:
80 tph on average*
* incl. servicing time
Job Example 2
Job description:
Rock type:
Rock structure:
Carrier:
68 t, 302 kW
Atlas Copco hydraulic breaker:
HB 7000
Production data:
120 tph on average*
* incl. servicing time
16
Homogeneous deposit
Particularities:
Solution:
Limestone, very tough
Legal reasons make cost of blasting too high
17. Job Example 3
Job description:
Rock type:
Lava
Rock structure:
Homogeneous deposit
Particularities:
Blasting strictly prohibited
Solution:
Carrier:
34 t, 166 kW
Atlas Copco hydraulic breaker:
HB 3000
Production data:
45 tph on average*
* incl. servicing time
Job Example 4
Job description:
Rock type:
Shell limestone
Rock structure:
Strong seaming
Particularities:
Blasting prohibited
Solution:
Carrier:
42 t, 173 kW
Atlas Copco hydraulic breaker:
HB 4200
Production data:
140-180 tph on average*
* incl. servicing time
17
18. Job Example 5
Job description:
Rock type:
Orthogneiss
Rock structure:
Deposit with strong tectonic faults
Particularities:
Blasting prohibited
Solution:
Carrier:
75 t, 324 kW
Atlas Copco hydraulic breaker:
HB 7000
Production data:
230 tph on average*
* incl. servicing time
Job Example 6
Job description:
Rock type:
Rock structure:
Carrier:
61 t, 294 kW
Atlas Copco hydraulic breaker:
HB 7000
Production data:
100 tph on average*
* incl. servicing time
18
Mainly homogeneous, only a few areas
with tectonic faults
Particularities:
Solution:
Diabase
None
19. Job Example 7
Job description:
Rock type:
Dolomite
Rock structure:
Varying between homogeneous and areas with tectonic faults
Particularities:
Selective mining difficult using conventional methods
Solution:
Carrier:
45 t, 227 kW
Atlas Copco hydraulic breaker:
HB 4200
Production data:
120 tph on average*
* incl. servicing time
Job Example 8
Job description:
Rock type:
Limestone
Rock structure:
Varying between homogeneous and
areas with tectonic faults
Particularities:
Blasting prohibited
Solution:
Carrier:
77 t, 319 kW
Atlas Copco hydraulic breaker:
HB 7000
Production data:
160 tph on average*
* incl. servicing time
19
20. Job Example 9
Job description:
Rock type:
Limestone
Rock structure:
Deposit with tectonic faults
Particularities:
None
Solution:
Carrier:
68 t, 287 kW
Atlas Copco hydraulic breaker:
HB 5800
Production data:
200 tph on average*
* incl. servicing time
Job Example 10
Job description:
Rock type:
Rock structure:
Carrier:
74 t, 317 kW
Atlas Copco hydraulic breaker:
HB 7000
Production data:
300 tph on average*
* incl. servicing time
20
Deposit with strong tectonic faults
Particularities:
Solution:
Limestone with iron content
None
21. Job Example 11
Job description:
Rock type:
Limestone
Rock structure:
Varying between homogeneous and areas with tectonic faults
Particularities:
None
Solution:
Carrier:
74 t, 317 kW
Atlas Copco hydraulic breaker:
HB 7000
Production data:
190 tph on average*
* incl. servicing time
Job Example 12
Job description:
Rock type:
Reef limestone, extremely brittle
Rock structure:
Homogeneous deposit
Particularities:
Blasting strictly prohibited
Solution:
Carrier:
76 t, 331 kW
Atlas Copco hydraulic breaker:
HB 7000
Production data:
300 tph on average*
* incl. servicing time
21
22. Job Example 13
Job description:
Rock type:
Limestone
Rock structure:
Homogeneous deposit
Particularities:
Blasting prohibited in some areas of the deposit
Solution:
Carrier:
60 t, 328 kW
Atlas Copco hydraulic breaker:
HB 5800
Production data:
140 tph on average*
* incl. servicing time
Job Example 14
Job description:
Rock type:
Rock structure:
Carrier:
80 t, 319 kW
Atlas Copco hydraulic breaker:
HB 7000
Production data:
150 tph on average*
* incl. servicing time
22
Deposit with tectonic faults
Particularities:
Solution:
Porphyry
Blasting prohibited
23. High-tech for high profitability
  1 Performance enhancement
AutoControl optimizes ratio of impact energy
to impact frequency. Energy recovery.
Backed by decades of experience and equipped with the
latest innovations, Atlas Copco hydraulic breakers meet
your profitability requirements through features such as
• universal application
• high durability
• high performance
• high availability
• easy maintenance
• reduced
strain on
carrier
Numerous
sophisticated
and proven
details – as
illustrated in
this cross
section of an
HB 4200 – combine to make our
hydraulic breakers unbeatable
and give you the
edge you need.
  2 Ready for special applications
Standard port for forced ventilation, e.g. for
underwater jobs.
2
1
3
4
6
5
13
7
8
9
10
11
12
  3 Easy maintenance
Service opening provides direct access for
routine maintenance; the percussion mechanism can be removed simply from the
breaker box.
  4 Constant impact energy
Gas piston accumulator integrated in cylinder
cover.
  5 Automatic lubrication
ContiLube® II mounted directly on the breaker
box is simple to use and makes extremely
economical use of lubricant.
  6 Reduced strain on carrier
Percussion mechanism suspended in prestressed elastic damping elements to prevent
damage to carrier equipment.
  7 Low noise emission levels
No acoustic bridges between percussion
mechanism and breaker box. All openings
plugged.
  8 Low-recoil action reduces strain on man
and machine
Long piston stroke for low recoil.
  9 Optimum transfer of percussive energy
Percussion piston and working tool have virtually the same diameter.
10 Highly durable breaker box
Wear-resistant materials used in high-stress
zones.
11 Highly durable wear bushings
DustProtector effectively prevents dust
penetration.
12 Reliable working tools
Precision matching of design, materials and
heat treatment. In-house production!
13 Higher productivity
StartSelect adapts the breaker to operating
conditions.
23
24. DustProtector II
ContiLube® II
DustProtector II
Prevents dust
penetration on
the hydraulic
breaker
ContiLube ® II
Automatic
lubrication
unit mounted
directly on the
breaker
Reusable
sleeve - can be
reused several
times when
the wear bushing is replaced.
Highly resistant
to grease and
mechanical loads
Advantages:
• Mounted directly on the breaker box
• Ports protected in breaker box
• Quick and easy cartridge changing
without need for tools
(screw cartridge)
• Cartridges available worldwide
• Cartridges are refillable
• Compact design
• Patent protected
AutoControl
StartSelect
Optimal impact energy at maximum percussive
performance
The ratio of impact energy to impact rate is controlled to
ensure maximum percussive performance at all times
(percussive performance = impact energy x impact rate).
The “StartSelect” system allows the
start-up and shut-off behavior of the
breaker to be set in line with conditions.
Avoids blank firing
Reduces the load on both carrier and hydraulic breaker
AutoControl always starts in short-stroke mode – reduced
energy for better tool positioning
Centering effect facilitates handling
VibroSilenced system
All MB and HB hydraulic breakers are fitted as standard with
the efficient “VibroSilenced” noise and vibration damping
system.
Elastic elements between percussion mechanism and guide
system provide full acoustic insulation.
24
“AutoStart” mode
for jobs in unstable ground conditions,
such as
• secondary reduction of mined rock
• working with the breaker in horizontal/
overhead position
• size reduction of light concrete structures
“AutoStop” mode
for jobs on firm ground, such as
• trenching
• bench leveling in the quarry
• excavating foundations in rock
• size reduction of heavy concrete
structures
25. Service you can depend on
Wherever the job, our service engineers and product specialists are there to help you choose the right demolition
tool, match carriers and attachments, make
mechanical and hydraulic connections, as
well as to provide on-site applications
advice and servicing for your Atlas
Copco products.
The specialists from our authorised distributors and service
partners also receive regular
training updates to ensure they
can provide competent help in
all areas – with advice, the full
range of after-sales service, and
the supply of genuine Atlas Copco
spares, working tools and accessories,
all in the quality you have come to know
and expect. Only genuine Atlas Copco parts
ensure that your Atlas Copco products maintain the highest
levels of performance, availability and economy.
Your Atlas Copco service partner is never further away
than the next telephone.
25
26. AC also stands for Application Counseling!
With your help we can find out whether non-blasting
methods are suitable for your mining operations.
We assure you that all data will be treated
in the strictest confidence.
Questionnaire
Please complete the attached questionnaire so that we can
perform a feasibility assessment.
The more details you can provide, the better!
Photos
1.Take a photo of the quarry face
2.Zoom in on one section of the face.
Who evaluates the questionnaires and what comes next?
The applications specialists at Atlas Copco will evaluate the
questionnaire and give their recommendations. If hydraulic
breakers are a viable option, you will be sent comprehensive
information, e.g. attachment recommendations for your
carrier, reference jobs, videos etc..
Example:
26
Important: The picture should include a
person or object to give us an idea of the
scale.