What Refractory Materials are Needed for Blast Furnace Hot Blast Stove

Blast furnace hot blast stove is a kind of heat energy equipment commonly used in industry. It is often used in various applications in industrial production, such as drying, sintering, calcination, heat treatment, and other processes. It can provide stable high-temperature hot air to meet the needs of high-temperature drying, heating, and heat treatment in the production process. The hot blast stove works in a high-temperature environment, so suitable refractory materials are needed to protect the equipment and protect the structure from factors such as thermal expansion, wear, and chemical corrosion. In the construction of blast furnace hot blast stoves, our common refractory bricks include high alumina bricks, heat insulation bricks, clay bricks, silica bricks, etc. The selection of these refractory bricks is generally determined according to the temperature of the hot air. When the temperature of the hot air is lower than 900°C When the wind temperature is higher than 900°C, high-alumina bricks, mullite bricks, sillimanite bricks, and silica bricks are used for the furnace lining and checker bricks in high-temperature parts. Blast furnace hot blast stoves have different refractory materials selected according to different parts of use. 1. At the top of the blast furnace hot blast stove,...

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The Role of Refractory Castables

Refractory castable is a kind of unshaped refractory material, which plays a vital role in the refractory industry. Refractory castable is a mixture composed of refractory materials and binders. It has the characteristics of high-temperature resistance, wear resistance, and chemical corrosion resistance. It is widely used in metallurgy, chemical industry, electric power, and other industrial fields. Refractory castables play an important role in the metallurgical industry. Metallurgical processes require the use of high-temperature furnaces and vessels for smelting and processing metals, which requires refractory castables to withstand extremely high temperatures and pressures. Refractory castables can resist corrosion and erosion of metals, ensuring the normal operation of metallurgical equipment and the high quality of metal materials. The chemical industry is also inseparable from the role of refractory castables. In the process of chemical production, the treatment of high temperature and corrosive substances is often involved, which requires refractory castables to have the characteristics of chemical corrosion resistance. Through high-quality materials and formula design, refractory castables can effectively resist corrosive media such as acids and alkalis, and protect the safe operation of chemical equipment. Refractory castables also play an important role in the power industry. Power equipment such as boilers and metallurgical...

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Boiler Castable Construction Plan

Boiler castable construction plan is an important link in the process of boiler installation and maintenance. It is directly related to the service life and working efficiency of the boiler. A reasonable construction plan can ensure the quality and stability of the castable and improve the performance and safety of the boiler. A commonly used boiler castable construction scheme will be introduced below. First, determine the type and proportion of castables. According to the specific requirements of the boiler, select the appropriate type of castable, such as refractory castable, wear-resistant castable, high alumina refractory castables, etc. At the same time, according to the type of castable and working conditions, determine its optimal ratio to ensure the stability and durability of the castable. Next, prepare the materials and equipment needed for construction. Including castables, cement, sand, gypsum, high-temperature refractories, etc. At the same time, prepare construction tools and equipment such as measuring tools, mixing equipment, molds, and supporting materials to ensure the smooth progress of construction. Then, prepare for construction. Clean up the sundries and deposits inside the boiler to ensure that the construction surface is clean and tidy. Check the structure and supporting equipment inside the boiler to make sure...

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Types and Details of Refractory Bricks

Refractory brick is a kind of refractory material, which is widely used in the construction of high-temperature environments and refractory structures. It has excellent fire resistance and good heat resistance and can maintain stable physical and chemical properties under high-temperature conditions. There are many types of refractory bricks, and some common refractory bricks will be introduced in detail below. 1. Aluminum silicate refractory bricks: Aluminum silicate refractory brick, also known as high alumina brick, is a refractory material made of high alumina and silicate as the main raw materials. It has the advantages of high strength, good resistance to molten slag, and strong oxidation resistance. It is often used in high-temperature equipment such as furnaces, converters, and glass kilns. 2. High-alumina refractory bricks: High-alumina refractory bricks are made of high-alumina alumina powder and silica fume as the main raw materials, which are made by mixing, molding, drying, and calcination. It has good thermal stability, corrosion resistance, and high-temperature strength, and is widely used in iron and steel, non-ferrous metal smelting, and other industries. 3. Mullite refractory bricks: Mullite refractory brick is a kind of refractory material made of mullite as the main raw material. It has good high-temperature resistance, excellent...

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What are the Technical Parameters of Corundum Refractory Bricks?

Corundum refractory brick is a high-temperature refractory material made of corundum minerals. The following are related characteristics and technologies The main component of corundum mineral is alumina, which has the characteristics of high hardness, high density, and high melting point, so corundum refractory bricks have the following characteristics. High-temperature stability: It can maintain stability at high temperatures for a long time, and it is not easy to burn out or burn brittle. Corrosion resistance: It has good acid and alkali resistance and oxidation resistance, and can resist chemical corrosion at high temperatures. Wear resistance: It has high hardness and density, which can resist mechanical wear at high temperatures. Pressure resistance: It has high compressive strength and can withstand pressure at high temperatures. Due to the above characteristics, corundum refractory bricks are widely used in the lining and insulation layer of high-temperature furnaces, electric furnaces, glass kilns, steel smelting, and other industries, which can ensure the normal operation of the equipment and prolong the life of the equipment. Corundum refractory brick technical parameters Key Ingredients: Corundum Mineral. Compressive strength: generally above 100MPa, can reach about 200MPa. Refractoriness: The refractoriness of corundum refractory bricks is generally above 1750°C, and can reach above...

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Treatment Method for Brick Drop in Rotary Kiln Cooling Zone

The cooling zone of the rotary kiln is an important piece of equipment in the production process of the rotary kiln. The falling of refractory bricks in the cooling zone will have a bad influence on production. If this happens, the following measures need to be taken in a timely manner: Shutdown for maintenance: stop the machine in time to check the status of the cooling zone, confirm the number and location of the fallen refractory bricks, and replace the fallen refractory bricks in time. Maintenance: Strengthen the maintenance of the cooling belt, regularly check the condition of the refractory bricks on the cooling belt, and replace the aging bricks in time. Management: Strictly abide by the management regulations, keep the workplace clean and tidy, and reduce the accumulation of materials and the impact on the cooling zone. Improve operating skills: improve the skills and work experience of operators, strengthen operating specifications, and reduce damage to equipment caused by misoperation. Periodic inspection: conduct a comprehensive inspection regularly, including the transmission mechanism, bearings, lubrication system, etc., to find and deal with problems in time. It should be noted that if the refractory bricks on the cooling belt fall seriously, it is...

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What are the Types of Common Refractory Castables

Refractory castable is a kind of unshaped refractory material. It has high fluidity and is constructed by pouring, so it is also called castable. Generally, it is cast on-site by pouring, vibration, or tamping. Refractory castables are different according to different usage occasions. So what are the types of refractory castables? 1. According to chemical properties, it can be divided into acid-resistant castables, alkali-resistant castables, neutral castables, and corrosion-resistant castables. 2. According to the density, it can be divided into light castable and heavy castable. 3. According to the composition of refractory raw materials, it can be divided into high alumina castables, silicon castables, mullite castables, corundum castables, silicon carbide castables, clay castables, etc. 4. According to the characteristics of use, it can be divided into high-temperature resistant castables, steel fiber castables, acid and alkali resistant castables, low cement castables, high strength wear-resistant castables, slag-resistant wear-resistant castables, anti-skinning castables, non-stick aluminum castables, etc. 5. According to the composition of the binder, it can be divided into organic bonded castables and inorganic bonded castables, such as resin-bonded castables and cement-bonded castables. 6. According to the bonding method of the selected binder, it can be divided into hydraulic c bonded castables, air-hardened...

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Features of Lightweight Acid Resistant Castables

Lightweight acid-resistant castables are mainly used in anti-corrosion flue and chimney linings, acid storage tanks, pickling tank linings, nitric acid shrinkage tower linings, acid recovery furnace linings, and other refractory castables that are corroded by acidic high-temperature gases. Lightweight Acid-resistant Castable Properties 1. It has the characteristics of light volume and high compressive strength. 2. It is resistant to acid and acid gas corrosion. 3. It has the characteristics of heat insulation, heat preservation, and low water absorption. 4. It can significantly improve the air tightness, integrity, and corrosion resistance of the inner lining Features of Lightweight Acid Resistant Castables 1. Low thermal conductivity. The thermal conductivity of lightweight acid-resistant castables is only 0.12-0.16W/(m·k), which is about 1/10 of that of ordinary concrete, so it can better play the role of thermal insulation. 2. High-temperature resistance. The castable can be used in a high-temperature environment of 1000°C for a long time without cracking or falling off and has excellent fire resistance. 3. Strong corrosion resistance. Lightweight acid-resistant castables have good acid and alkali corrosion resistance and can be used for a long time in strong acid, strong alkali, and other corrosive environments without damage or damage. 4. Simple construction. The...

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What are the Dimensions of High Alumina Refractory Balls

High aluminum fire-resistant ball refers to a spherical refractory material with an alumina content of over 65%. It is widely used in equipment such as hot blast furnaces and heating transformation furnaces in urea, steel, and other industries. It has the characteristics of high-temperature resistance, low wear, corrosion resistance, and high strength. Due to the curved surface structure of the ball, it increases gas fluidity and plays a good role in preventing gas dust and ash from blocking and causing slag formation, so it is widely used, Today, Xinhongji Refractory will take you to briefly understand the dimensions of high aluminum fire-resistant balls. Generally speaking, high-alumina refractory balls will use refractory balls with different alumina content according to different use occasions. At the same time, according to the size of the furnace used and the different working conditions, refractory balls with different diameters will be selected. The types of alumina content of the more common high-alumina refractory balls on the market are 65%, 70%, 75%, and 85%. Currently, there are more high-alumina refractory balls used. 50mm, and 60mm, are relatively common high alumina refractory ball sizes. Some of the sizes of the high alumina refractory balls introduced above are relatively...

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Application Occasions of High Purity Corundum Brick

High-purity corundum brick refers to a high-temperature refractory brick with an alumina content of more than 90%. It is a refractory product with corundum as the main crystal phase. It has good chemical stability and is resistant to acidic or alkaline slag, metal Liquid glass, etc. have strong resistance. Characteristics of high-purity corundum bricks 1. It has high normal temperature compressive strength and high load softening start temperature. 2. It has good chemical stability and good corrosion resistance of molten glass. 3. Good wear resistance and erosion resistance, long service life The use of high-purity corundum bricks In the glass industry, high-purity corundum bricks are mainly used as the upper space of the glass kiln that is not in contact with the glass liquid, as well as the slides and rails of the steel rolling heating furnace, and can also be used as the residue gasifier, coal gasifier, carbon black reaction furnace, Lining material for pulp waste liquid gasifier and other industrial furnaces. The production process of high-purity corundum brick The production process of sintered corundum bricks is to crush the sintered corundum bricks to 3mm coarse particles and some fine powders less than 0.074mm, and some of them add...

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