Factors affecting anti corrosive property of fused cast azs block
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1. Many factors can affect the anti-corrosive properties of fused cast AZS blocks, including chemical composition, bulk density, porosity, thermal shock resistance, oxidation resistance, and properties of the corrosive medium and application conditions. 2. The chemical composition, density, porosity, and thermal/oxidation resistance of the block influence its ability to resist corrosion. Blocks with certain compositions, higher density, lower porosity, and better thermal/oxidation resistance exhibit greater anti-corrosive properties. 3. The properties of the corrosive medium, such as its chemistry, pH, temperature, and static/dynamic nature, as well as the application conditions like temperature, pressure, atmosphere
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Anti corrosive of fused cast azs brick
The document discusses factors that affect the anti-corrosive properties of fused cast AZS brick. It states that anti-corrosive properties allow the brick to resist corrosion from substances like slag, fuel, and acids at high temperatures. The chemical composition, density, porosity, and conditions of use all impact a brick's resistance to corrosion. Multiple factors together determine the complex anti-corrosive abilities of refractory bricks.
The use performance of Corundum Brick
The use performance of corundum brick refers to the corundum brick has the performance when used in high temperature. Including refractoriness, refractoriness under load, linear change rate, thermal shock resistance, slag resistance, acid resistance, alkali resistance, oxidation resistance, resistance to hydration and CO erosion resistance, etc.
1. Increase the refractoriness.
Refractoriness refers to corundum brick with non-melting performance under resistance to high temperature. Refractoriness is the basis for determining material whether can be used as a refractory brick. The international standardization organization stipulates above 1500 ℃ refractoriness of inorganic non-metallic materials is the refractory material. The significance of refractoriness and melting point is different. Can not take refractoriness as the use of corundum brick temperature. The basic factor of refractoriness to decide is chemical mineral composition and its distribution of corundum brick.
2. Increase the refractoriness under load.
Corundum brick refractoriness under load refers to the products bear constant load deformation temperature under the condition of rise temperature. It shows corundum brick the ability of resistance to high temperature and load effect, to a certain extent, indicates that products in the similar conditions of use case structure strength. The major factors that affect corundum brick refractoriness under load is the chemical mineral composition and microstructure. To improve the purity of raw materials, reduce the content of low melting or flux, increase the molding pressure, made of high density of bricks, can significantly improve products refractoriness under load.
3. Improve the thermal shock resistance
Thermal shock resistance refers to the corundum brick with damage resistance performance to the temperature change rapidly. Generally speaking, the thermal expansion rate of corundum brick is greater, thermal shock resistance is worse. The thermal conductivity of products is higher, thermal shock resistance is better, the better. In addition, the organization structure and grain composition shape and other products of corundum brick have effect on the thermal shock resistance.
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The document discusses factors that affect the anti-corrosive properties of fused cast AZS brick. It states that anti-corrosive properties allow the brick to resist corrosion from substances like slag, fuel, and acids at high temperatures. The chemical composition, density, porosity, and conditions of use all impact a brick's resistance to corrosion. Multiple factors together determine the complex anti-corrosive abilities of refractory bricks.
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The use performance of corundum brick refers to the corundum brick has the performance when used in high temperature. Including refractoriness, refractoriness under load, linear change rate, thermal shock resistance, slag resistance, acid resistance, alkali resistance, oxidation resistance, resistance to hydration and CO erosion resistance, etc.
1. Increase the refractoriness.
Refractoriness refers to corundum brick with non-melting performance under resistance to high temperature. Refractoriness is the basis for determining material whether can be used as a refractory brick. The international standardization organization stipulates above 1500 ℃ refractoriness of inorganic non-metallic materials is the refractory material. The significance of refractoriness and melting point is different. Can not take refractoriness as the use of corundum brick temperature. The basic factor of refractoriness to decide is chemical mineral composition and its distribution of corundum brick.
2. Increase the refractoriness under load.
Corundum brick refractoriness under load refers to the products bear constant load deformation temperature under the condition of rise temperature. It shows corundum brick the ability of resistance to high temperature and load effect, to a certain extent, indicates that products in the similar conditions of use case structure strength. The major factors that affect corundum brick refractoriness under load is the chemical mineral composition and microstructure. To improve the purity of raw materials, reduce the content of low melting or flux, increase the molding pressure, made of high density of bricks, can significantly improve products refractoriness under load.
3. Improve the thermal shock resistance
Thermal shock resistance refers to the corundum brick with damage resistance performance to the temperature change rapidly. Generally speaking, the thermal expansion rate of corundum brick is greater, thermal shock resistance is worse. The thermal conductivity of products is higher, thermal shock resistance is better, the better. In addition, the organization structure and grain composition shape and other products of corundum brick have effect on the thermal shock resistance.
Shrinkage and creep
This document contains information about different types of shrinkage and creep that can occur in concrete. It discusses drying shrinkage, which occurs as water evaporates from concrete, causing it to shrink. Plastic shrinkage occurs while the concrete is still fresh and can cause cracking. Factors that influence each type of shrinkage are provided. The document also introduces creep, which is the slow deformation of concrete under stress over a long period of time. Consequences of creep such as loss of pre-stress and excessive deflection are mentioned.
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The document discusses the different types of shrinkage that can occur in concrete, including plastic shrinkage, drying shrinkage, autogenous shrinkage, and carbonation shrinkage. Plastic shrinkage causes cracks on the surface of fresh concrete due to evaporation before setting. Drying shrinkage is defined as the contraction of hardened concrete from the loss of capillary water, which can lead to cracking, warping, and deflection without any external loading. In summary, the document outlines the main types of volume changes and shrinkage that concrete undergoes both during the plastic and hardened states.
Advantages and disadvantages of concrete
قازانج و خراپییەکانی کۆنکریت
Concrete is a composite material composed of coarse aggregate bonded together with a fluid cement that hardens over time. Most concretes used are lime-based concretes such as Portland cement concrete or concretes made with other hydraulic cements, such as ciment fondu. However, asphalt concrete, which is frequently used for road surfaces, is also a type of concrete, where the cement material is bitumen, and polymer concretes are sometimes used where the cementing material is a polymer.
When aggregate is mixed together with dry Portland cement and water, the mixture forms a fluid mass that is easily molded into shape. The cement reacts chemically with the water and other ingredients to form a hard matrix that binds the materials together into a durable stone-like material that has many uses.[2] Often, additives (such as pozzolans or superplasticizers) are included in the mixture to improve the physical properties of the wet mix or the finished material. Most concrete is poured with reinforcing materials (such as rebar) embedded to provide tensile strength, yielding reinforced concrete.
Famous concrete structures include the Hoover Dam, the Panama Canal, and the Roman Pantheon. The earliest large-scale users of concrete technology were the ancient Romans, and concrete was widely used in the Roman Empire. The Colosseum in Rome was built largely of concrete, and the concrete dome of the Pantheon is the world's largest unreinforced concrete dome.[3] Today, large concrete structures (for example, dams and multi-storey car parks) are usually made with reinforced concrete.
After the Roman Empire collapsed, use of concrete became rare until the technology was redeveloped in the mid-18th century. Today, concrete is the most widely used man-made material (measured by tonnage).
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Compressive strength
Tensile strength
Modulus of elasticity
Creep
Shrinkage
Durability
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The document presents a model to calculate plastic shrinkage cracking risk based on four properties: the plastic period duration, bleeding volume, evaporation rate, and use of synthetic microfibers. Risk is classified as low, medium, or high. Methods to reduce risk include shortening the plastic period, increasing bleeding, lowering evaporation, and adding microfibers. In conclusion, the risk assessment considers the plastic period duration, bleeding volume, evaporation rate, and micro
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Performance of Concrete at Elevated Temperatures: Utilizing A Blended Ordinar...
This study aimed at investigating the effect of subjecting concrete, produced with cement being
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replacement of OPC by 10% SDA increased the thermal shock resistance of the concrete by 11 cycles than the
0% OPC concrete at the same temperature. The concrete produced with OPC has better thermal conductivity
than the concrete produced by blending OPC with SDA, as a result, the dislodgement of the concrete edges is
relatively lower in the SDA blended cement concrete than in the OPC concrete. The result shows that, blending
OPC with SDA in concrete performed better at elevated temperatures than concrete produced with only OPC.
Therefore, the replacement of OPC with 10% SDA can be applied as a fire resisting bonding material in
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Surface treatment techniques play an important role in improving properties like hardness, wear and corrosion resistance. The document discusses 8 techniques:
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Zhengzhou Sunrise Refractory Co., Ltd. is mainly engaged in the research and development of refractory products. Sunrise can provide excellent quality refractory products which contain Fused cast AZS block 33#,36#,41#, fused cast α-β alumina, fused cast high zirconia block, silica brick, glass mould brick, magnesia brick, zircon brick, zircon mullite brick, mullite brick, sillimanite brick, fused corundum brick, high chrome brick, chrome corundum brick, chrome AZS block. All products has passed the ISO international certified. Over 30 years producing and marketing experience, with reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, we will do our best to help you.
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Linear change on reheating of zircon brick
Zhengzhou Sunrise Refractory Co., Ltd. is mainly engaged in the research and development of refractory products. Sunrise can provide both insulation brick and refractory brick which contain Fused cast AZS 33#,36#,41#, fused cast α-βalumina, fused cast high zirconia block, silica brick, Mullite Insulation Brick, Fire Clay Insulation Brick, High Alumina Insulating Brick, magnesia brick, zircon brick, zircon mullite brick, mullite brick, sillimanite brick, etc. All products has passed the ISO international certified. Over 30 years producing and marketing experience, with reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, we will do our best to help you.
Linear change on reheating of zircon brick
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Refractory brick contacted glass liquid in melting pool
Refractory bricks used in glass melting pools are susceptible to corrosion from direct contact with molten glass. The liquid glass temperature can reach 1500°C, requiring refractory bricks with high corrosion resistance. Maintaining stability at the refractory-glass interface and preventing spalling are also important to avoid glass defects. Zhengzhou Sunrise Refractory is a manufacturer of refractory products for the glass industry, including fused cast bricks and mullite, zircon, and magnesia bricks.
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The extensive use of concrete as a structural material for the high rise buildings, storage tanks, nuclear reactors and
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result of many factors including the exposed environment and constituent materials.
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Refractory brick contacted glass liquid in melting pool
Refractory brick contacted glass liquid in melting pool
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The profile of zirconium oxide
Zirconium oxide plays an important role in glass refractory and it is an important chemical composition of zircon related refractory, such as fused cast azs block, zircon brick, fused cast high zirconia brick and zircon mullite brick . Zirconium oxide is a white crystalline which is difficult to dissolve in water, hydrochloric acid and dilute sulfuric acid. Zirconium oxide has the characteristics of high melting point, high resistance coefficient, high refractive index and low thermal expansion coefficient.
The property of zircon brick
ZrO2 in zircon brick is about 65% which is almost composed of zirconite crystals and contains only a very small amount of glass phase and free ZrO2. The ture density is about 4.55g/cm3 or so, and the maximum ture density can reach 4.62 g/cm3. The bulk density of zircon is between 3.6 g/cm3 and 3.8 g/cm3, and apparent pososity is above 13%.
Casting porosity of fused cast azs block
It is a normal phenomenon for fused cast azs block to have porosities when pouring, however, the existence of any porosity can directly reduce the quality of fused cast azs block. But where does the porosity come from? They are generally from four aspects: furnace material, melting process, casting material, and casting process.
Profile of zircon brick
Zircon brick is a refractory brick which is made by natural zirconite and through sintering method. During the production process, not only zirconite is used as the main raw material, while appropriate sintering agent (the most commonly used is refractory clay) is added into the raw material. In order to improve the property of zircon brick, other components are added into the material such as bauxite, corundum or chromium oxide.
Introduction of mullite brick for glass furnace use
Mullite brick is a new type refractory material of high efficient energy saving which can contact flame directly. Mullite brick is also a high alumina refractory material with mullite as the main crystalline phase, and the content of alumina is generally between 65% and 75%. As to chemical composition, except for mullite, glass phase and square quartz is contained if the content of alumina is low; corundum is contained if the content of alumina is high.
Bottom erosion reasons of glass furnace
Zircon brick can especially be used as superstructure bricks of flame space and bottom bricks of glass furnace in glass industry.Zhengzhou Sunrise Refractory Co., Ltd can provide zircon brick with good quality which have passed the ISO international certified. With reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, Sunrise are sincerely looking forward to establishing a long-term mutually beneficial relationship with you.
Zircon brick with good dense structure for glass furnace
Zircon brick is refractory product made of natural zircon. It has the advantages of strong slag resistance, high mechanical strength, high refractoriness under load, large abrasive resistance and excellent thermal shock stability, it is an important material for furnace construction in the industries, such as metallurgy, building materials and electronics, It is usually used in regenerator chamber, bottom part and side wall.
The main content of zircon brick - zr o2
ZrO2 is the main oxide of zirconium, and it is a white crystalline which is difficult to dissolve in water, hydrochloric acid and dilute sulfuric acid. ZrO2 is an important material of refractory with the characteristics of high melting point, high resistance coefficient, high refractive index and low thermal expansion coefficient.
Features during casting process of fused cast azs block
The casting process has a significant influence on the quality of fused cast AZS blocks. During casting, intense heat exchange and chemical reactions occur between the molten liquid and sand mold. This can lead to issues like porosity if the cavity pressure increases too much. Uneven molten liquid flow may also cause defects on the surface of the blocks. How the molten liquid fills the porous mold wall further impacts the final internal structure, potentially causing air holes or sand inclusions. The time of the casting process also affects the temperature distribution within the finished block.
Sintered steps of zircon brick
Zircon brick is produced by sintered method which contains three steps, they are encastage, kiln-firing and kiln-out.
The difference between insulation brick and refractory brick
Zircon brick can especially be used as superstructure bricks of flame space and bottom bricks of glass furnace in glass industry.Zhengzhou Sunrise Refractory Co., Ltd can provide zircon brick with good quality which have passed the ISO international certified. With reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, Sunrise are sincerely looking forward to establishing a long-term mutually beneficial relationship with you.
Refractoriness of fused cast azs block
Zhengzhou Sunrise Refractory Co., Ltd can provide fused cast azs block which have passed the ISO international certified. With reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, Sunrise are sincerely looking forward to establishing a long-term mutually beneficial relationship with you.
How to measure bulk density of zircon brick
Zircon brick can especially be used as superstructure bricks of flame space and bottom bricks of glass furnace in glass industry.Zhengzhou Sunrise Refractory Co., Ltd can provide zircon brick with good quality which have passed the ISO international certified. With reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, Sunrise are sincerely looking forward to establishing a long-term mutually beneficial relationship with you.
Methods to prolong the service life of glass furnace
Glass furnace is a hot engineering equipment with high temperature, which is the main equipment and heart of glass industrial. In order to prolong the service life of glass furnace, increase the melting ability of glass furnace, and reduce energy consumption, besides the reasonable design of glass furnace structure and reasonable refractory(using different refractory in different part of glass furnace, for instance, fused cast azs block 33# is usually used in bottom, fused cast azs block 41# is usually used as throat and electrode brick ), manufacturing process is also in considering at the same time, as manufacturing process is not only related to the melting ability of glass furnace and glass quality, but also influencing the service life of glass furnace.
Methods to prolong the service life of glass furnace
Glass furnaces must be designed and operated properly to prolong their service life. Key factors include using refractory materials suited for different furnace areas, maintaining stable and appropriate melting temperatures without large fluctuations, controlling the distribution of mineral materials to reduce corrosion, limiting impurities like iron in raw materials, and adding moisture to inhibit the generation of fly materials. Zhengzhou Sunrise Refractory provides high-quality refractory products and has experience helping customers prolong furnace lifetime through proper material selection and process control.
Methods to prolong the service life of glass furnace
Glass furnace is a hot engineering equipment with high temperature, which is the main equipment and heart of glass industrial. In order to prolong the service life of glass furnace, increase the melting ability of glass furnace, and reduce energy consumption, besides the reasonable design of glass furnace structure and reasonable refractory(using different refractory in different part of glass furnace, for instance, fused cast azs block 33# is usually used in bottom, fused cast azs block 41# is usually used as throat and electrode brick ), manufacturing process is also in considering at the same time, as manufacturing process is not only related to the melting ability of glass furnace and glass quality, but also influencing the service life of glass furnace.
How to choose zircon brick manufacturer
There are thousands of refractory manufacturers who can manufacture zircon brick at present market. However, what are the standards to measure a good zircon brick manufacturer? Now Zhengzhou Sunrise Refractory Co., Ltd. as a professional refractory will give some advices from the following aspects for your reference
Sintered molding method to manufacture zircon brick
Zircon brick can especially be used as superstructure bricks of flame space and bottom bricks of glass furnace in glass industry.Zhengzhou Sunrise Refractory Co., Ltd can provide zircon brick with good quality which have passed the ISO international certified. With reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, Sunrise are sincerely looking forward to establishing a long-term mutually beneficial relationship with you.
Main applications of zircon brick in glass furnace
Zircon brick can especially be used as superstructure bricks of flame space and bottom bricks of glass furnace in glass industry.Zhengzhou Sunrise Refractory Co., Ltd can provide zircon brick with good quality which have passed the ISO international certified. With reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, Sunrise are sincerely looking forward to establishing a long-term mutually beneficial relationship with you.
introduction of zircon bricks
Zircon brick is made of stable and high pure zircon sand in which the zircon content is over 64 % , so zircon is as the main crystal phase ,it is an important firebrick in Zircon related refractory bricks. It has the advantages of high mechanical strength, high refractoriness under load, excellent thermal shock stability, good creep resistance and good corrosion resistance to glass liquid.
More from sunrise refractory (20)
Introduction of mullite brick for glass furnace use
Introduction of mullite brick for glass furnace use
Zircon brick with good dense structure for glass furnace
Zircon brick with good dense structure for glass furnace
Features during casting process of fused cast azs block
Features during casting process of fused cast azs block
The difference between insulation brick and refractory brick
The difference between insulation brick and refractory brick
Methods to prolong the service life of glass furnace
Methods to prolong the service life of glass furnace
Methods to prolong the service life of glass furnace
Methods to prolong the service life of glass furnace
Methods to prolong the service life of glass furnace
Methods to prolong the service life of glass furnace
Sintered molding method to manufacture zircon brick
Sintered molding method to manufacture zircon brick
Main applications of zircon brick in glass furnace
Main applications of zircon brick in glass furnace
Factors affecting anti corrosive property of fused cast azs block
- 1. Factors Affecting Anti-Corrosive Property Of Fused Cast AZS Block Anti-corrosive property of fused cast azs block means the ability to resist various kinds of corrosive medium corrosion and erosion under high temperature, such as slag, fuel, glass melting liquid, acid, alkali, electrolyte liquid and gaseous substances. Anti-corrosive property is a very important index to measure the chemical corrosion and mechanical wear of fused cast azs block, so it has important meaning for choosing proper production process. There are many kinds of factors that can affect the Anti-corrosive property of fused cast azs block, explaining from the following several aspects for your reference. 1. The chemical and mineral composition: the different chemical composition of a refractory brick is, the different ability of anti-corrosive property is, the acid resistant brick has good corrosion resistance to acid corrosion medium, and alkaline refractory brick is very weak to against acidic corrosive medium corrosion. The refractory brick is a group of multi - gathering which is composed of main crystal phase and matrix. High refractoriness, large grains, and less grain boundaries of Main crystal phase is, relatively better corrosion resistance is; if the impurity content is high in the matrix, it is easy to form a liquid phase, if the liquid phase viscosity is low, the corrosion resistance is poor. 2. The bulk density, apparent porosity, thermal shock resistance, oxidation resistance: refractory brick of high bulk density and low porosity is more corrosive than relatively loose brick; A refractory brick with bad thermal shock resistance will appear crack when thermal shock time, so that the corrosion medium will get into the interior of the refractory brick, resulting in the corrosion resistance drop. Carbon refractory brick with poor antioxidant will loose its layout and fall easy after the surface being oxidation, then corrosion resistance will decrease. 3. Corrosive medium: Mainly refers to the chemical composition of the corrosive medium, pH, viscosity, medium temperature, activity speed (static or dynamic), etc. 4. Application conditions: Mainly contains temperature and shake the situation, pressure, atmosphere, touching moment and area. The temperature is high, the shake is big, the pressure is big, the air is corrosive, the touch is long and the area is big, the corrosion of the material is more severe. In a word, the factor affect the corrosion resistance factor of a refractory brick is complicated; it is also adaptive to fused cast azs block. Zhengzhou Sunrise Refractory Co., Ltd can provide fused cast azs block which have passed the ISO international certified. With reliable quality, competitive price and prompt delivery, Sunrise has established long-term business and cooperation relationship with many customers in different countries and regions. For any further information, Contact us, Sunrise
- 2. are sincerely looking forward to establishing a long-term mutually beneficial relationship with you. Source link: http://fusedcastazs.com/