Gold ores and their minerals
•Download as PPTX, PDF•
1 like•139 views
Gold ores are natural mineral formations containing gold in varying quantities. Gold is typically found in combination with other minerals and elements, and the composition of gold ores can vary widely. Common minerals associated with gold ores include quartz, pyrite, arsenopyrite, chalcopyrite, and tellurides like calaverite and sylvanite. The presence and proportions of these minerals affect the extraction process and determine the overall value and processing techniques required to recover the gold. Gold ores are sought after for their economic value and are mined and processed to extract the precious metal for various applications, including jewelry, electronics, and currency.
Report
Share
Report
Share
Recommended
Jmmce20030200002 23847832
This document summarizes research characterizing gold in the Jinya Carlin-type gold deposit in China. Key findings include:
1) The majority (77%) of gold occurs as submicroscopic solid solution gold within arsenopyrite, with lesser amounts (16%) in arsenic-rich pyrite. Native gold accounts for 6% of gold.
2) Arsenopyritization and pyritization can be used as indicators for further exploration in the deposit district. However, the gold in sulfides is not amenable to direct cyanidation and requires pretreatment to recover.
3) A comprehensive study using various microscopy and analytical techniques was used to independently quantify each gold carrier and determine the
chapter 6
1. The document discusses principles of metallurgy and isolation of elements from ores. It covers topics like occurrence of metals, concentration of ores, extraction of crude metal, and thermodynamic principles.
2. Concentration of ores involves processes like magnetic separation, froth floatation, and leaching to separate the desired metal compound from unwanted gangue materials.
3. Extraction of the crude metal generally involves two steps - conversion of the concentrated ore to an oxide through calcination or roasting, and then reducing the oxide to the pure metal using a reducing agent like carbon at high temperatures.
DELMER- Handbook on assaying and_refining_of_gold
The document discusses various methods for assaying gold, including fire assaying, ICP spectrometry, X-ray fluorescence, touchstone testing, and density measurement. Fire assaying is the most widely used and accurate method, involving melting a sample with lead and silver, separating out the noble metals in a cupel, and dissolving away silver to determine the gold content. The method works well for alloys with 30-99.9% gold but requires modifications if nickel, palladium, or platinum are present. Other techniques provide alternatives but with reduced accuracy compared to fire assaying.
Carbonategroup of mineral
1) Carbonate group minerals contain carbon, oxygen, and one or more metallic elements. Calcite and dolomite are common examples.
2) They have a variety of structures but generally have a carbonate ion group (CO3) with a cation situated in the center.
3) Calcite, dolomite, and aragonite are the main carbonate mineral groups. Calcite is the most abundant and has many industrial uses like cement production. Dolomite is also commonly used in construction.
ppt-module-1-extraction-of-elements.doc
This document discusses various methods used to extract metals from their ores, including concentration, roasting/calcination, reduction, and refining. It describes several concentration methods like magnetic separation, hydraulic washing, and froth floatation to separate ores from gangue. Leaching is also discussed as a chemical separation process used to extract metals like aluminum, gold, silver, and low-grade copper ores. Overall, the document provides an overview of key terms and processes involved in the metallurgy of extracting pure metals from raw mineral ores.
Occurance extraction of metal
1. The document discusses the extraction of metals from ores. It begins by explaining that metals occur naturally in either a native/free state or combined state as compounds like oxides, sulfides, etc.
2. It then lists some important metal ores and their corresponding metals, such as hematite (iron), cassiterite (tin), galena (lead), etc. It also provides details on the mineral wealth of metals like iron, aluminum, copper, zinc, and titanium in India.
3. The document outlines the general steps involved in metal extraction: crushing/grinding ores, concentrating the ore, calcining/roasting it, reducing metal oxides to the free metal, and finally purifying
Whitepaperanalysisspectro.pdf
This document discusses the analysis of precious metals such as gold, platinum, and silver. It describes the properties and applications of precious metals and why their purity and composition need to be carefully analyzed. Three analytical techniques - energy-dispersive X-ray fluorescence, optical emission spectrometry, and inductively coupled plasma optical emission spectrometry - are introduced as widely-used solutions for rapidly and accurately analyzing precious metals. The document focuses on how these techniques can be applied using instruments from SPECTRO Analytical Instruments to analyze properties like purity, identify alloys, and detect impurities in precious metals.
Metallurgical process.pptx
The document discusses various topics related to metals and metallurgy. It begins by defining metals and metallurgical principles, then discusses alkali metals, alkaline earth metals, and their compounds. It also covers minerals, ores, concentration processes, smelting, electrolytic reduction, and refining of metals. Key concentration methods described are magnetic separation, gravity separation, froth flotation, and leaching. The document also differentiates between minerals and ores, discusses alloys, amalgams, and existence of metals. It provides an overview of metallurgy and the steps involved in the metallurgical process.
Recommended
Jmmce20030200002 23847832
This document summarizes research characterizing gold in the Jinya Carlin-type gold deposit in China. Key findings include:
1) The majority (77%) of gold occurs as submicroscopic solid solution gold within arsenopyrite, with lesser amounts (16%) in arsenic-rich pyrite. Native gold accounts for 6% of gold.
2) Arsenopyritization and pyritization can be used as indicators for further exploration in the deposit district. However, the gold in sulfides is not amenable to direct cyanidation and requires pretreatment to recover.
3) A comprehensive study using various microscopy and analytical techniques was used to independently quantify each gold carrier and determine the
chapter 6
1. The document discusses principles of metallurgy and isolation of elements from ores. It covers topics like occurrence of metals, concentration of ores, extraction of crude metal, and thermodynamic principles.
2. Concentration of ores involves processes like magnetic separation, froth floatation, and leaching to separate the desired metal compound from unwanted gangue materials.
3. Extraction of the crude metal generally involves two steps - conversion of the concentrated ore to an oxide through calcination or roasting, and then reducing the oxide to the pure metal using a reducing agent like carbon at high temperatures.
DELMER- Handbook on assaying and_refining_of_gold
The document discusses various methods for assaying gold, including fire assaying, ICP spectrometry, X-ray fluorescence, touchstone testing, and density measurement. Fire assaying is the most widely used and accurate method, involving melting a sample with lead and silver, separating out the noble metals in a cupel, and dissolving away silver to determine the gold content. The method works well for alloys with 30-99.9% gold but requires modifications if nickel, palladium, or platinum are present. Other techniques provide alternatives but with reduced accuracy compared to fire assaying.
Carbonategroup of mineral
1) Carbonate group minerals contain carbon, oxygen, and one or more metallic elements. Calcite and dolomite are common examples.
2) They have a variety of structures but generally have a carbonate ion group (CO3) with a cation situated in the center.
3) Calcite, dolomite, and aragonite are the main carbonate mineral groups. Calcite is the most abundant and has many industrial uses like cement production. Dolomite is also commonly used in construction.
ppt-module-1-extraction-of-elements.doc
This document discusses various methods used to extract metals from their ores, including concentration, roasting/calcination, reduction, and refining. It describes several concentration methods like magnetic separation, hydraulic washing, and froth floatation to separate ores from gangue. Leaching is also discussed as a chemical separation process used to extract metals like aluminum, gold, silver, and low-grade copper ores. Overall, the document provides an overview of key terms and processes involved in the metallurgy of extracting pure metals from raw mineral ores.
Occurance extraction of metal
1. The document discusses the extraction of metals from ores. It begins by explaining that metals occur naturally in either a native/free state or combined state as compounds like oxides, sulfides, etc.
2. It then lists some important metal ores and their corresponding metals, such as hematite (iron), cassiterite (tin), galena (lead), etc. It also provides details on the mineral wealth of metals like iron, aluminum, copper, zinc, and titanium in India.
3. The document outlines the general steps involved in metal extraction: crushing/grinding ores, concentrating the ore, calcining/roasting it, reducing metal oxides to the free metal, and finally purifying
Whitepaperanalysisspectro.pdf
This document discusses the analysis of precious metals such as gold, platinum, and silver. It describes the properties and applications of precious metals and why their purity and composition need to be carefully analyzed. Three analytical techniques - energy-dispersive X-ray fluorescence, optical emission spectrometry, and inductively coupled plasma optical emission spectrometry - are introduced as widely-used solutions for rapidly and accurately analyzing precious metals. The document focuses on how these techniques can be applied using instruments from SPECTRO Analytical Instruments to analyze properties like purity, identify alloys, and detect impurities in precious metals.
Metallurgical process.pptx
The document discusses various topics related to metals and metallurgy. It begins by defining metals and metallurgical principles, then discusses alkali metals, alkaline earth metals, and their compounds. It also covers minerals, ores, concentration processes, smelting, electrolytic reduction, and refining of metals. Key concentration methods described are magnetic separation, gravity separation, froth flotation, and leaching. The document also differentiates between minerals and ores, discusses alloys, amalgams, and existence of metals. It provides an overview of metallurgy and the steps involved in the metallurgical process.
Chapter 8
- The document discusses various properties of metals such as aluminium being the most abundant metal, platinum being the most precious metal, and iron being the most usable metal. It also discusses properties of specific metals like lithium being the lightest metal and lead being the poorest conductor of heat.
- Metals are elements that form cations by losing electrons and exist as electropositive elements, except for hydrogen. Mercury is an example of a metal that exists in liquid form. Metal oxides are generally basic in nature.
- Alkali metals are the most reactive group of metals due to their large size and low ionization energy values. Properties like malleability, ductility and reactivity can also vary between
Comparative Test For the Upgrading of Lead in Sabon Layi Lead-Zinc Ore (Alkal...
Comparative Test For the Upgrading of Lead in Sabon Layi Lead-Zinc Ore (Alkal...INFOGAIN PUBLICATION
his research work deals with the upgrading of lead in Sabon Layi lead-zinc ore using gravity and froth flotation beneficiation methods. Analysis of the chemical composition reveals that this crude ore contains 38.76%lead and other related minerals such as 29% silica, 22.80% Sulphur, 2.76%Zinc, 4.17%CaO and others in traces; these related minerals are impurities that hinder the lead grade found in this ore from appreciating. Fractional sieve and the grain size result revealed that the liberation size of the ore is at -710+500µm. At this sieve size, the lead –zinc ore was subjected to four different beneficiation methods using five kilograms (5kg) each as charge on Wilfley shaking Table, Humphrey spiral concentrator, Air floating Machine and one kilogram (1kg) for froth flotation. Resulting products –Concentrate and tailing from Processing were analyzed. The grade and weight of the resulting mineral were used in calculating percentage recovery of each applied process; which was used to ascertain the best method.The Cause of Metallic Corrosion in Crude Oils
This document summarizes a study on the corrosion of ferrous metals in two types of crude oils. Seven types of ferrous metals were immersed in Murban and Das Blend crude oils. The corrosion rates of the metals were determined after 15, 30, and 45 days. Overall, four metals showed higher corrosion rates in Murban crude oil, while three metals corroded more in Das Blend crude oil. Microscopic analysis revealed pitting and cracks on metal surfaces. Higher iron and copper concentrations were found in the crude oils exposed to carbon steels and Monel metal, respectively, indicating corrosion. The hardness of metals reduced slightly due to corrosion compound formation. Das Blend crude oil contained more corrosive sulfur, acids
THE CAUSE OF METALLIC CORROSION IN CRUDE OILS
Metallic corrosion is a severe interrogation regarding most of industrial applications of metals such as the industry of crude oil refining because of the foremost role of metals. The term of corrosion is usually explained as the formation of the metal oxide, sulfide, hydroxide or any compound related with a carboxylic group on the surface due to the impact of the surrounded conditions. The content of sulfur, acidity, mercaptans and salt content are the well ascertained corrosive properties of crude oils also the chemical composition of metals acquit oneself the fundamental preface for the corrosion. The surveillance of the comparison of corrosive capabilities of Murban and Das Blend crude oils in front of seven different types of ferrous metals that used in Sri Lankan refining industry was the dominant intention of this research. The chemical composition of used metals were determined by XRF detector while testing the contents of sulfur, acidities, contents of mercaptans and salt contents with respect to both crude oils simultaneously. Batches of well cleaned and equal sized metal pieces were immersed in both crude oils separately and the corrosion rate of each type of metal piece was determined after 15, 30 and 45 days from the immersion by weight loss method under the observations through the optical microscope. The ferrous and copper concentrations of each crude oil sample were tested while testing the variation of the hardness of each metal as a confirmation stage. According to results there were found relatively higher amount of sulfur, mercaptans, acids and lower amount of salt in Das Blend than Murban although relatively higher corrosion rates of most of metals in the Murban than the Das Blend. The slight reduction of hardness in each metal piece was found while observing significant concentration of ferrous and copper from some of crude oil samples.
Ch 24 sec3
The document summarizes properties and uses of d-block and f-block elements. It discusses the typical properties of transition metals and how most have multiple oxidation states and form colored aqueous solutions. It then focuses on specific transition metals titanium, chromium, zinc, iron, cobalt, nickel, copper, silver, and gold; and their common uses. Finally, it briefly discusses the lanthanides and actinides, noting some lanthanide oxides are used in sunglasses and cameras lenses while actinides are all radioactive.
Minerals of mexico
This document discusses several important mineral resources found in Mexico and around the world. It provides details on the chemical symbol, atomic number, descriptions and common uses of gold, iron, lead, zinc, aluminum, uranium, mercury, silver, copper, platinum, carbon, nickel, nitrate, diamond, antimony, and titanium. The major producing countries of each mineral are also listed.
Gold
Gold is a soft, shiny yellow metal that is malleable and ductile. It has many industrial and decorative uses in electronics, jewelry, coins and more due to its conductive and corrosion-resistant properties. Iron is the most abundant metal and is used primarily to make steel for construction and machinery. It is found as ore deposits containing iron oxides. Chromite is the only ore of chromium, which is used to make stainless steel and is often found in ultrabasic rocks. Celestite is a mineral containing strontium sulfate and is used in fireworks, alloys and drilling mud.
105- presentation.pptx
Nusrat Jahan Tuli is enrolled in session 2020-2021 with roll number 164-053. Rare earth metals include scandium, yttrium, and the lanthanide series. They tend to occur together in nature and are difficult to separate, so they are also called rare earth elements. Gadolinium is a silvery, malleable, ductile metal that is fluorescent and has a faint yellow tint. It is not found in pure form in nature but is found in minerals like gadolinite, monazite, and bastnasite.
Rare earth metal
1) Neodymium (Nd) is a rare earth metal that is moderately toxic and can pollute the environment, especially through air pollution.
2) It is an important element in many industries such as magnets used in electronics and medical equipment, but has disadvantages to human health with long term exposure potentially damaging the liver and lungs.
3) While recycling can recover neodymium through processes like mining and extraction, precautions must be taken to protect workers from its toxic effects.
Mineral Engineering & Fuel Lecture Notes
FellowBuddy.com is an innovative platform that brings students together to share notes, exam papers, study guides, project reports and presentation for upcoming exams.
We connect Students who have an understanding of course material with Students who need help.
Benefits:-
# Students can catch up on notes they missed because of an absence.
# Underachievers can find peer developed notes that break down lecture and study material in a way that they can understand
# Students can earn better grades, save time and study effectively
Our Vision & Mission – Simplifying Students Life
Our Belief – “The great breakthrough in your life comes when you realize it, that you can learn anything you need to learn; to accomplish any goal that you have set for yourself. This means there are no limits on what you can be, have or do.”
Like Us - https://www.facebook.com/FellowBuddycom
Noble metal to nobel prize
STATE TO EXPLAIN.....
Noble Metal
Nobel prize
Nobel Laureates Nobel Prize for Noble Metal
Advance Metal catalyzed reaction
Gold
Gold is a transitional metal. In its purest form have reddish yellow color, soft, malleable, and ductile metal.
Atomic number : 79
Atomic mass : 196.9 u
Density : 19.32 g/cm3
Melting point : 1,064 °C
Boiling point : 2,700 °C
Founded in different form associated with different rock type in different tectonic setting.
Discovered from earlier time and used for multi purposes.
Formation of gold
The saying among prospectors that "gold is where you find it" suggests its occurrence is unpredictable, but there is some certain geological environments for the formation.
Because gold is very stable over a range of conditions, it is very widespread in the earth’s crust.
Gold dissolved in warm to hot salty water, the fluids are generated in huge volumes deep in the Earth’s crust as water-bearing minerals dehydrate during metamorphism.
Any gold present in the rocks being heated and squeezed is sweated out and goes into solution as complex ions.
In this form, dissolved gold, along with other elements such as silicon, iron and sulphur, migrates wherever fractures in the rocks allow the fluids to pass.
The direction is generally upwards, to cooler regions at lower pressures nearer the Earth’s surface.
Gold eventually becomes insoluble and begins to crystallize, most often enveloped by quartz.
The association of gold and quartz vein forms one of the most common types of "primary gold deposits".
India
In India, gold mineralization of economic importance is mainly restricted to Archean greenstone terranes of the Dharwar Craton (DC).
The eastern block of the DC has a high favorability for hosting major gold deposits such as Kolar, Hutti, and Ramagiri, whereas the western block hosts only a few smaller deposits such as Gadag, Ajjahanahalli, and Kempinkote.
Gold also discoverrd by GSI in the Singbhum Craton, Aravalli Craton, Bastar Craton and Southern Granulite Terrain (SGT).
India is the second-largest consumer of gold after China.
India currently holds about 558 tones of gold, representing 6.6% of its reserves, (World Gold Council, October 2016).
Kolar Gold Field, Hutti Gold Field and Ramgiri Gold Field are the most important gold fields.
Gold Demand and Use
The largest source of demand is the jewelry industry Gold’s workability, unique beauty, and universal appeal make this rare precious metal the favorite of jewelers all over the world.
Besides jewelry, gold has many applications in a variety of industries including aerospace, medicine, dentistry, and electronics for the manufacture of computers, telephones, televisions...
The third source of gold demand is governments and central banks that buy gold to increase their official reserves.
Private investors there are private investors. Depending upon market circumstances, the investment component of demand can vary substantially from year to year.
Fire assaying
Fire assaying is a method of determining the proportion of precious metals like gold and silver in ores. It involves melting samples with fluxes at high temperatures. The metals dissolve in molten lead and are separated from slag. Lead is removed by oxidation, leaving a gold-silver alloy called dore. Acid treatment separates silver from gold. Fire assaying provides an economical way to analyze large samples and is still widely used today due to its accuracy and simplicity despite the development of modern analytical techniques.
gold-170415170052.pdf
This document discusses gold deposits in India. It begins by providing background information on gold's physical and chemical properties. It then describes the major types of gold deposits in India - placer ores, oxidized ores, and primary ores - and the mining methods used to extract each type. The document outlines gold formation processes and discusses several prominent gold-bearing regions in India, including the Wynad-Nilgiri province in Southern Granulite Terrain, the Kolar Gold Fields, and Hutti Gold Mines in Karnataka. It concludes by noting that while gold mining has economic benefits, it can also damage the environment through pollution and waste if not properly regulated.
CHAPTER 9 Extraction of precious metals.pdf
Content
Introduction
Occurrence and production
Extraction of gold
Extraction of silver
Extraction of precious metals
Extraction of platinum
Assignment_MCQs.docx
This document contains questions and answers about minerals and their properties from the NCERT Class 10 Geography textbook. It includes 10 questions total across various topics - 4 about ferrous minerals like iron ore and manganese, 4 about non-ferrous minerals like copper and bauxite, and 2 about the properties of gold and platinum. The questions test understanding of where minerals are found in India, their uses, and characteristics. For each question there are 4 answer options, with explanations provided for the correct answer.
Assignment_MCQs.docx
This document contains questions and answers about minerals and energy resources from the NCERT Class 10th Geography textbook. It includes 10 questions total across various topics - 4 about ferrous minerals like iron ore and manganese, 4 about non-ferrous minerals like copper and bauxite, and 2 that discuss the general mode of occurrence and composition of minerals. The questions test understanding of where different minerals are found in India as well as their properties and uses.
Pgm1
This document provides an overview of platinum group metals, gold, base metals, and analytical techniques used for their analysis. It discusses the unique properties and applications of platinum group metals like palladium, platinum, and rhodium. It also describes common analytical methods for precious metals like inductively coupled plasma-mass spectrometry and fire assay. The document outlines the chemistry and important uses of gold as well as the definition and examples of base metals that are commonly associated with precious metals in ore deposits.
Elements of the periodic table [Autosaved].pptx
A PowerPoint presentation about 8 elements of the periodic table which includes 9 characteristics about each element.
Pem ln 1_mkp
This document provides an overview of principles of extractive metallurgy. It outlines the course objectives which are to understand extractive metallurgy processes, identify extraction types, learn thermodynamics of extraction, and understand various metal production flow sheets. The syllabus covers topics like extraction processes, pyrometallurgy versus hydrometallurgy, calcination, roasting, smelting, thermodynamics principles, and electrometallurgy. Key extraction concepts like comminution, classification, separation methods, and kinetics are also mentioned.
Manufacturing process of Turbine blade
The document discusses the manufacturing process of turbine blades. Nickel and cobalt-based superalloys are commonly used due to their high temperature strength and corrosion resistance. The design process utilizes CAD and CAM software to optimize the blade shape. Investment casting is a key technique, which involves creating a ceramic shell mold around a wax pattern, followed by metal casting. Issues like cracking can arise during casting so blades undergo X-ray inspection to detect internal defects.
Case Study on SAIL Rourkela Steel Plant
The case study on SAIL Rourkela Steel Plant typically examines the operations, challenges, and achievements of the steel plant located in Rourkela, Odisha, India. It may cover topics such as its history, production processes, technological advancements, environmental initiatives, economic impact on the region, and management strategies. Such a case study provides valuable insights into the steel industry and its role in the development of the local economy and the broader industrial landscape.
More Related Content
Similar to Gold ores and their minerals
Chapter 8
- The document discusses various properties of metals such as aluminium being the most abundant metal, platinum being the most precious metal, and iron being the most usable metal. It also discusses properties of specific metals like lithium being the lightest metal and lead being the poorest conductor of heat.
- Metals are elements that form cations by losing electrons and exist as electropositive elements, except for hydrogen. Mercury is an example of a metal that exists in liquid form. Metal oxides are generally basic in nature.
- Alkali metals are the most reactive group of metals due to their large size and low ionization energy values. Properties like malleability, ductility and reactivity can also vary between
Comparative Test For the Upgrading of Lead in Sabon Layi Lead-Zinc Ore (Alkal...
Comparative Test For the Upgrading of Lead in Sabon Layi Lead-Zinc Ore (Alkal...INFOGAIN PUBLICATION
his research work deals with the upgrading of lead in Sabon Layi lead-zinc ore using gravity and froth flotation beneficiation methods. Analysis of the chemical composition reveals that this crude ore contains 38.76%lead and other related minerals such as 29% silica, 22.80% Sulphur, 2.76%Zinc, 4.17%CaO and others in traces; these related minerals are impurities that hinder the lead grade found in this ore from appreciating. Fractional sieve and the grain size result revealed that the liberation size of the ore is at -710+500µm. At this sieve size, the lead –zinc ore was subjected to four different beneficiation methods using five kilograms (5kg) each as charge on Wilfley shaking Table, Humphrey spiral concentrator, Air floating Machine and one kilogram (1kg) for froth flotation. Resulting products –Concentrate and tailing from Processing were analyzed. The grade and weight of the resulting mineral were used in calculating percentage recovery of each applied process; which was used to ascertain the best method.The Cause of Metallic Corrosion in Crude Oils
This document summarizes a study on the corrosion of ferrous metals in two types of crude oils. Seven types of ferrous metals were immersed in Murban and Das Blend crude oils. The corrosion rates of the metals were determined after 15, 30, and 45 days. Overall, four metals showed higher corrosion rates in Murban crude oil, while three metals corroded more in Das Blend crude oil. Microscopic analysis revealed pitting and cracks on metal surfaces. Higher iron and copper concentrations were found in the crude oils exposed to carbon steels and Monel metal, respectively, indicating corrosion. The hardness of metals reduced slightly due to corrosion compound formation. Das Blend crude oil contained more corrosive sulfur, acids
THE CAUSE OF METALLIC CORROSION IN CRUDE OILS
Metallic corrosion is a severe interrogation regarding most of industrial applications of metals such as the industry of crude oil refining because of the foremost role of metals. The term of corrosion is usually explained as the formation of the metal oxide, sulfide, hydroxide or any compound related with a carboxylic group on the surface due to the impact of the surrounded conditions. The content of sulfur, acidity, mercaptans and salt content are the well ascertained corrosive properties of crude oils also the chemical composition of metals acquit oneself the fundamental preface for the corrosion. The surveillance of the comparison of corrosive capabilities of Murban and Das Blend crude oils in front of seven different types of ferrous metals that used in Sri Lankan refining industry was the dominant intention of this research. The chemical composition of used metals were determined by XRF detector while testing the contents of sulfur, acidities, contents of mercaptans and salt contents with respect to both crude oils simultaneously. Batches of well cleaned and equal sized metal pieces were immersed in both crude oils separately and the corrosion rate of each type of metal piece was determined after 15, 30 and 45 days from the immersion by weight loss method under the observations through the optical microscope. The ferrous and copper concentrations of each crude oil sample were tested while testing the variation of the hardness of each metal as a confirmation stage. According to results there were found relatively higher amount of sulfur, mercaptans, acids and lower amount of salt in Das Blend than Murban although relatively higher corrosion rates of most of metals in the Murban than the Das Blend. The slight reduction of hardness in each metal piece was found while observing significant concentration of ferrous and copper from some of crude oil samples.
Ch 24 sec3
The document summarizes properties and uses of d-block and f-block elements. It discusses the typical properties of transition metals and how most have multiple oxidation states and form colored aqueous solutions. It then focuses on specific transition metals titanium, chromium, zinc, iron, cobalt, nickel, copper, silver, and gold; and their common uses. Finally, it briefly discusses the lanthanides and actinides, noting some lanthanide oxides are used in sunglasses and cameras lenses while actinides are all radioactive.
Minerals of mexico
This document discusses several important mineral resources found in Mexico and around the world. It provides details on the chemical symbol, atomic number, descriptions and common uses of gold, iron, lead, zinc, aluminum, uranium, mercury, silver, copper, platinum, carbon, nickel, nitrate, diamond, antimony, and titanium. The major producing countries of each mineral are also listed.
Gold
Gold is a soft, shiny yellow metal that is malleable and ductile. It has many industrial and decorative uses in electronics, jewelry, coins and more due to its conductive and corrosion-resistant properties. Iron is the most abundant metal and is used primarily to make steel for construction and machinery. It is found as ore deposits containing iron oxides. Chromite is the only ore of chromium, which is used to make stainless steel and is often found in ultrabasic rocks. Celestite is a mineral containing strontium sulfate and is used in fireworks, alloys and drilling mud.
105- presentation.pptx
Nusrat Jahan Tuli is enrolled in session 2020-2021 with roll number 164-053. Rare earth metals include scandium, yttrium, and the lanthanide series. They tend to occur together in nature and are difficult to separate, so they are also called rare earth elements. Gadolinium is a silvery, malleable, ductile metal that is fluorescent and has a faint yellow tint. It is not found in pure form in nature but is found in minerals like gadolinite, monazite, and bastnasite.
Rare earth metal
1) Neodymium (Nd) is a rare earth metal that is moderately toxic and can pollute the environment, especially through air pollution.
2) It is an important element in many industries such as magnets used in electronics and medical equipment, but has disadvantages to human health with long term exposure potentially damaging the liver and lungs.
3) While recycling can recover neodymium through processes like mining and extraction, precautions must be taken to protect workers from its toxic effects.
Mineral Engineering & Fuel Lecture Notes
FellowBuddy.com is an innovative platform that brings students together to share notes, exam papers, study guides, project reports and presentation for upcoming exams.
We connect Students who have an understanding of course material with Students who need help.
Benefits:-
# Students can catch up on notes they missed because of an absence.
# Underachievers can find peer developed notes that break down lecture and study material in a way that they can understand
# Students can earn better grades, save time and study effectively
Our Vision & Mission – Simplifying Students Life
Our Belief – “The great breakthrough in your life comes when you realize it, that you can learn anything you need to learn; to accomplish any goal that you have set for yourself. This means there are no limits on what you can be, have or do.”
Like Us - https://www.facebook.com/FellowBuddycom
Noble metal to nobel prize
STATE TO EXPLAIN.....
Noble Metal
Nobel prize
Nobel Laureates Nobel Prize for Noble Metal
Advance Metal catalyzed reaction
Gold
Gold is a transitional metal. In its purest form have reddish yellow color, soft, malleable, and ductile metal.
Atomic number : 79
Atomic mass : 196.9 u
Density : 19.32 g/cm3
Melting point : 1,064 °C
Boiling point : 2,700 °C
Founded in different form associated with different rock type in different tectonic setting.
Discovered from earlier time and used for multi purposes.
Formation of gold
The saying among prospectors that "gold is where you find it" suggests its occurrence is unpredictable, but there is some certain geological environments for the formation.
Because gold is very stable over a range of conditions, it is very widespread in the earth’s crust.
Gold dissolved in warm to hot salty water, the fluids are generated in huge volumes deep in the Earth’s crust as water-bearing minerals dehydrate during metamorphism.
Any gold present in the rocks being heated and squeezed is sweated out and goes into solution as complex ions.
In this form, dissolved gold, along with other elements such as silicon, iron and sulphur, migrates wherever fractures in the rocks allow the fluids to pass.
The direction is generally upwards, to cooler regions at lower pressures nearer the Earth’s surface.
Gold eventually becomes insoluble and begins to crystallize, most often enveloped by quartz.
The association of gold and quartz vein forms one of the most common types of "primary gold deposits".
India
In India, gold mineralization of economic importance is mainly restricted to Archean greenstone terranes of the Dharwar Craton (DC).
The eastern block of the DC has a high favorability for hosting major gold deposits such as Kolar, Hutti, and Ramagiri, whereas the western block hosts only a few smaller deposits such as Gadag, Ajjahanahalli, and Kempinkote.
Gold also discoverrd by GSI in the Singbhum Craton, Aravalli Craton, Bastar Craton and Southern Granulite Terrain (SGT).
India is the second-largest consumer of gold after China.
India currently holds about 558 tones of gold, representing 6.6% of its reserves, (World Gold Council, October 2016).
Kolar Gold Field, Hutti Gold Field and Ramgiri Gold Field are the most important gold fields.
Gold Demand and Use
The largest source of demand is the jewelry industry Gold’s workability, unique beauty, and universal appeal make this rare precious metal the favorite of jewelers all over the world.
Besides jewelry, gold has many applications in a variety of industries including aerospace, medicine, dentistry, and electronics for the manufacture of computers, telephones, televisions...
The third source of gold demand is governments and central banks that buy gold to increase their official reserves.
Private investors there are private investors. Depending upon market circumstances, the investment component of demand can vary substantially from year to year.
Fire assaying
Fire assaying is a method of determining the proportion of precious metals like gold and silver in ores. It involves melting samples with fluxes at high temperatures. The metals dissolve in molten lead and are separated from slag. Lead is removed by oxidation, leaving a gold-silver alloy called dore. Acid treatment separates silver from gold. Fire assaying provides an economical way to analyze large samples and is still widely used today due to its accuracy and simplicity despite the development of modern analytical techniques.
gold-170415170052.pdf
This document discusses gold deposits in India. It begins by providing background information on gold's physical and chemical properties. It then describes the major types of gold deposits in India - placer ores, oxidized ores, and primary ores - and the mining methods used to extract each type. The document outlines gold formation processes and discusses several prominent gold-bearing regions in India, including the Wynad-Nilgiri province in Southern Granulite Terrain, the Kolar Gold Fields, and Hutti Gold Mines in Karnataka. It concludes by noting that while gold mining has economic benefits, it can also damage the environment through pollution and waste if not properly regulated.
CHAPTER 9 Extraction of precious metals.pdf
Content
Introduction
Occurrence and production
Extraction of gold
Extraction of silver
Extraction of precious metals
Extraction of platinum
Assignment_MCQs.docx
This document contains questions and answers about minerals and their properties from the NCERT Class 10 Geography textbook. It includes 10 questions total across various topics - 4 about ferrous minerals like iron ore and manganese, 4 about non-ferrous minerals like copper and bauxite, and 2 about the properties of gold and platinum. The questions test understanding of where minerals are found in India, their uses, and characteristics. For each question there are 4 answer options, with explanations provided for the correct answer.
Assignment_MCQs.docx
This document contains questions and answers about minerals and energy resources from the NCERT Class 10th Geography textbook. It includes 10 questions total across various topics - 4 about ferrous minerals like iron ore and manganese, 4 about non-ferrous minerals like copper and bauxite, and 2 that discuss the general mode of occurrence and composition of minerals. The questions test understanding of where different minerals are found in India as well as their properties and uses.
Pgm1
This document provides an overview of platinum group metals, gold, base metals, and analytical techniques used for their analysis. It discusses the unique properties and applications of platinum group metals like palladium, platinum, and rhodium. It also describes common analytical methods for precious metals like inductively coupled plasma-mass spectrometry and fire assay. The document outlines the chemistry and important uses of gold as well as the definition and examples of base metals that are commonly associated with precious metals in ore deposits.
Elements of the periodic table [Autosaved].pptx
A PowerPoint presentation about 8 elements of the periodic table which includes 9 characteristics about each element.
Pem ln 1_mkp
This document provides an overview of principles of extractive metallurgy. It outlines the course objectives which are to understand extractive metallurgy processes, identify extraction types, learn thermodynamics of extraction, and understand various metal production flow sheets. The syllabus covers topics like extraction processes, pyrometallurgy versus hydrometallurgy, calcination, roasting, smelting, thermodynamics principles, and electrometallurgy. Key extraction concepts like comminution, classification, separation methods, and kinetics are also mentioned.
Similar to Gold ores and their minerals (20)
Comparative Test For the Upgrading of Lead in Sabon Layi Lead-Zinc Ore (Alkal...
Comparative Test For the Upgrading of Lead in Sabon Layi Lead-Zinc Ore (Alkal...
More from Er. Yash shinde
Manufacturing process of Turbine blade
The document discusses the manufacturing process of turbine blades. Nickel and cobalt-based superalloys are commonly used due to their high temperature strength and corrosion resistance. The design process utilizes CAD and CAM software to optimize the blade shape. Investment casting is a key technique, which involves creating a ceramic shell mold around a wax pattern, followed by metal casting. Issues like cracking can arise during casting so blades undergo X-ray inspection to detect internal defects.
Case Study on SAIL Rourkela Steel Plant
The case study on SAIL Rourkela Steel Plant typically examines the operations, challenges, and achievements of the steel plant located in Rourkela, Odisha, India. It may cover topics such as its history, production processes, technological advancements, environmental initiatives, economic impact on the region, and management strategies. Such a case study provides valuable insights into the steel industry and its role in the development of the local economy and the broader industrial landscape.
Testing and Inspection of Turbine Blade
The presentation discusses the testing and inspection of turbine blades, which is critical to ensure safe and efficient turbine operation. It covers various inspection methods for turbine blades, such as visual inspection, dye penetrant testing, ultrasonic testing, and automated inspection systems. Non-destructive testing methods like magnetic particle inspection, ultrasonic testing, x-ray radiography, and thermography are explored in detail. The challenges of inspecting turbine blades and key considerations for blade maintenance are also summarized.
Tensile Testing ASTM E8
ASTM E8 is a widely recognized standard for tensile testing of metallic materials. This test measures a material's mechanical properties by subjecting a sample to a controlled axial load, which helps determine factors such as yield strength, ultimate tensile strength, and elongation. It is a crucial method for assessing a material's performance and suitability for various applications, especially in engineering and manufacturing.
Introduction to Investment casting and Turbine Blade.pptx
The document discusses investment casting and turbine blades. It provides background on investment casting, describing the process of creating a ceramic mold from a wax pattern. Turbine blades are commonly manufactured using investment casting due to its ability to produce parts with complex internal cooling channel designs and intricate geometries from high-temperature superalloys. Investment casting is preferred over alternatives like shell molding and die casting for turbine blades because it allows for greater precision and compatibility with the required materials.
Chatrapati Shivaji Maharaj 🚩
Chhatrapati Shivaji Maharaj (1630-1680) was a prominent 17th-century Maratha leader and the founder of the Maratha Empire in western India. Born in Shivneri Fort, he displayed exceptional military acumen and cunning strategies in resisting the Mughal and Deccan Sultanate powers. Shivaji's reign marked the establishment of a self-governing Maratha state, emphasizing effective administration and justice. His legacy endures as a symbol of valor, innovative military tactics, and regional pride in Maharashtra, with his title "Chhatrapati" signifying his status as a crowned emperor.
More from Er. Yash shinde (6)
Introduction to Investment casting and Turbine Blade.pptx
Introduction to Investment casting and Turbine Blade.pptx
Recently uploaded
Advanced Java[Extra Concepts, Not Difficult].docx
This is part 2 of my Java Learning Journey. This contains Hashing, ArrayList, LinkedList, Date and Time Classes, Calendar Class and more.
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
RPMS Template 2023-2024 by: Irene S. Rueco
Azure Interview Questions and Answers PDF By ScholarHat
Azure Interview Questions and Answers PDF By ScholarHat
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingExcellence Foundation for South Sudan
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.How to Make a Field Mandatory in Odoo 17
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
Digital Artifact 1 - 10VCD Environments Unit
Digital Artifact 1 - 10VCD Environments Unit - NGV Pavilion Concept Design
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Aberdeen
Main Java[All of the Base Concepts}.docx
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
Walmart Business+ and Spark Good for Nonprofits.pdf
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
How to Build a Module in Odoo 17 Using the Scaffold Method
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
How to Add Chatter in the odoo 17 ERP Module
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...Nguyen Thanh Tu Collection
https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdHow to Setup Warehouse & Location in Odoo 17 Inventory
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar KanvariaPollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...National Information Standards Organization (NISO)
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.Recently uploaded (20)
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
Azure Interview Questions and Answers PDF By ScholarHat
Azure Interview Questions and Answers PDF By ScholarHat
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
How to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold Method
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
Film vocab for eal 3 students: Australia the movie
Film vocab for eal 3 students: Australia the movie
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Gold ores and their minerals
- 1. GOVERNMENT ENGINEERING COLLEGE, SECTOR 28, GANDHINAGAR “Gold ores and it’s minerals” Subject- Mineral Processing Presented by Yash Shinde D2D 24 Guide by Dr. Minal Dani Prof. Renu Ghanghas
- 2. Content- Introduction Types of ores Properties of Gold Application of Gold Gold mines in India Gold mines in world Reference
- 3. Introduction- Gold is a chemical element with the symbol Au (from Latin: aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. In simple words it is a yellow metallic element that occurs naturally in pure form. [1]
- 4. Types of Gold ores- Gold Ores Chemical Formula Images Calaverite AuTe Aurostibnite AuSb2 Maldonite Au2Bi 1-Luster: Metallic 2-Diaphaneity: Opaque 3-Tenacity: Brittle 4-Mass: 452.17 g/mol 1-Mass: 440.47 g/mol 2-Luster: metallic 3-Diaphaneity: Opaque 4-Tenacity: Brittle 1-Luster:Metallic 2-Diaphaneity-Opaque 3-Density-15.6g/cm³ 4-Crystal System: Isometric Properties [2,3,4]
- 5. Properties of Gold- Being very good conductors of heat and electricity, the metal does not get affected by air and most reagents. The element is corrosion resistant and is present in deposits of alluvium and veins. To provide more strength to the metal, another soft metal is alloyed to it. Melting point is 1064.18°C. Boiling point is 2836°C. Density of gold is 19.3 g /cm−3 [2]
- 6. [2]
- 8. [5-6] Gold mines in India
- 9. [5-6]
- 11. [8]
- 12. Reference- 1) https://en.m.wikipedia.org/ 2) https://assignmentpoint.com 3) https://www.mindat.org 4) https://www.mecmining.com 4) https://byjus.com/ 5) https://www.bullionbypost.co.uk/ 6) http://mygoldguide.in/ 7) http://mapsofindia.com/ 8) https://www.gold.org