High Alumina Bricks
Fused AZS Zirconia Corundum Bricks
Lightweight Mullite Bricks
Andalusite Bricks
Low Creep High Alumina Bricks
Fire Clay Bricks
Acid-Resistant High Alumina Bricks
Low Creep Fire Clay Bricks
High Alumina Insulation Bricks
Phosphate High Alumina Bricks
High Alumina Refractory Bubble Bricks
Corundum Bricks
Corundum Mullite Bricks
Chrome Corundum Bricks
High Alumina Refractory Castables
Corundum Castables
Corundum Mullite Castables
Zirconia-Corundum Casting Castables
Steel Fiber Castables
Mullite Castables
High Alumina Insulating Castables
Silicon Carbide Castables
Magnesia Alumina Spinel Castables
Refractory Ramming Mass
High Alumina Refractory Mortar
High Alumina Refractory Cement
Acid Resistant Castables
Alkali Proof Castables
Magnesia Bricks
Silica Bricks
Silicon Carbide Refractories
Refractory Precast Blocks
Chrome Corundum Casting Castables
Chrome Corundum Refractory Bricks
Refractory Ceramic Balls
Refractory Honeycomb Ceramic Regenerator
Refractory Corundum Ceramic Balls
Home > News
Silicon nitride-bonded silicon carbide bricks are a high-performance refractory material with excellent high-temperature resistance, corrosion resistance, and thermal shock resistance. They are widely used in high-temperature furnaces and special industrial equipment. So what are the uses of silicon nitride-bonded silicon carbide bricks? Silicon nitride-bonded silicon carbide bricks are widely used in metallurgy, the chemical industry, glass, and other industries. In the metallurgical industry, its excellent high-temperature resistance makes it an ideal lining material for high-temperature smelting furnaces, arc furnaces, melting furnaces, and heat treatment furnaces. In the metallurgical production process, this refractory material can withstand extremely high temperatures and thermal shocks, protect the equipment structure from high-temperature corrosion and thermal stress, and ensure stable production operation. Because silicon nitride bonded silicon carbide bricks have excellent corrosion resistance and chemical stability, they are often used as thermal insulation layers or linings for reaction equipment under acidic and alkaline media in the chemical industry, such as sulfuric acid, hydrofluoric acid, and other strong corrosive media processing devices. At the same time, silicon nitride combined with silicon carbide bricks can also be used in high-temperature pyrolysis equipment, oxidation reaction furnaces, etc., providing reliable refractory material guarantees for chemical production. Not only that, silicon...
Can refractory bricks be fired with clay? The answer is no. As a common refractory material, refractory bricks have excellent heat resistance and chemical stability in high-temperature environments. They are widely used in the internal construction of furnaces, chimneys, heat treatment furnaces, and other equipment, so the raw materials of refractory bricks need to have fire resistance and chemical stability in high-temperature environments. The raw materials for making refractory bricks are mainly bauxite, which usually contains aluminates, silicates, alumina, etc., so it can withstand high temperatures. There are obvious differences in the material properties of clay and bauxite. Clay is mainly composed of clay minerals, its structure is loose, easy to deform, and has poor fire resistance in high-temperature environments. Therefore, replacing refractory bricks with clay may cause the risk of deformation and collapse of building structures when subjected to high temperatures. The refractory temperature of general soil is 800-1000℃, while the working temperature of high-temperature industrial kilns can usually reach above 1300℃, so it is difficult for ordinary soil to meet the high-temperature requirements of high-temperature industrial kilns, and the soil can withstand a short time in a high-temperature environment, which cannot meet the long-term operation of high-temperature kilns...
Refractory bricks are a well-known refractory material that is suitable for all walks of life, especially the construction industry, and are an indispensable raw material. Do we have a deep understanding of it because it is so close to our lives? Refractory bricks, referred to as fire bricks, are a type of refractory material made of refractory clay or other refractory raw materials. In short, it is a type of fire-resistant and high-temperature-resistant brick. The material is light yellow or brown, mainly used to build smelting furnaces, and can withstand high temperatures of 1580℃-1770℃. It is also called fire bricks and is a refractory material with a certain shape and size. Bricks for different purposes can be made according to the raw materials used, and bricks of different shapes can be made according to the parts used. According to the preparation process, it can be divided into sintered bricks, unsintered bricks, fused bricks (electrically fused bricks), and refractory insulation bricks. According to the shape and size of refractory bricks, they can be divided into standard bricks, ordinary bricks, and special bricks. Refractory clay bricks, high-alumina bricks, silica bricks, magnesia bricks, and other high-temperature building materials and structural materials can be...
Castable refractory and refractory castable seem very similar in name, but there are obvious differences between the two in essence. Their main differences are mainly reflected in the composition, use, and construction process. 1. There are certain differences in the construction process between the two Castable refractory mainly refers to pre-prepared refractory materials, such as castable prefabricated parts, prefabricated blocks, etc., which are customized in the early stage of construction and can be used directly after being pulled to the construction site, which can reduce the difficulty of construction and speed up the construction progress. Refractory castable is a material that is mixed, stirred, and poured on site, and pays more attention to its pouring performance. It must usually be combined on-site with a forced mixer before use. A material that is stirred with water before pouring construction. 2. The two are different in composition and use Castable refractory is usually composed of various refractory materials and binders, suitable for lining and masonry of various high-temperature equipment, with high fire resistance and mechanical strength. Refractory castables are mainly composed of refractory particles and binders and are suitable for casting construction of various shapes, such as furnace walls, furnace roofs, etc....
Refractory castable prefabricated parts are a kind of refractory material with a special shape cast by casting refractory castables through a specified model. It is generally used in high-temperature kilns where construction is difficult. Usually, refractory castable prefabricated parts are modularized in the parts of the kiln that are difficult to construct in the early stage of construction, and customized externally. A product that can reduce the difficulty of construction and speed up the construction progress. Usually, refractory castable prefabricated parts customization should follow the following steps. First, customers must provide engineering requirements, including furnace type, use conditions, size requirements, material requirements, construction environment, etc. Then, the manufacturer or construction team will conduct technical evaluation and suggestions based on the requirements, and provide solutions and quotations. Once the solution and price are confirmed, the manufacturer can start to customize the prefabricated parts. Usually, the production cycle is long and it takes a certain amount of time to complete the customized processing. Finally, after the prefabricated parts are produced, they can be directly transported by the manufacturer or installed by the construction team. Where can I customize refractory castable prefabricated parts? At present, for some manufacturers that can carry out construction...
Steel fiber refractory castables are also called high-aluminum steel fiber-reinforced refractory castables. They are commonly used refractory castables for furnace outlets and side walls, tops, cyclone separator straight sections, cyclone separator tops, returners, and other parts. They are mainly composed of refractory aggregates, steel fibers, powders, binders, admixtures, water, or other liquid materials. They have the characteristics of wear resistance, acid resistance, alkali resistance, high-strength heat insulation, high strength, and high thermal conductivity. Steel fiber refractory castables add a certain amount of heat-resistant stainless steel fibers to its ingredients, which prevents the expansion difference between aggregates and matrix in the material under high-temperature conditions, and the stress caused by the temperature gradient changes when starting and stopping the furnace, which leads to the destruction of the furnace wall. At the same time, due to the addition of steel fibers, the overall strength of the furnace wall is greatly enhanced after the material is cast. Characteristics of steel fiber refractory castables 1. Inhibit the shrinkage of castables during curing, baking, and high-temperature use, which affects air tightness; 2. Improve the mechanical impact resistance and mechanical strength of castables; 3. Improve the thermal shock resistance of castables; 4. Improve the thermal spalling...
High-temperature resistant cement has various types according to its composition, use, and performance. The following are several common types of high-temperature resistant cement and their characteristics: 1. High Alumina Cement Features: Excellent high-temperature resistance and corrosion resistance. Classification: According to its aluminum oxygen ratio (Al2O3/SiO2), high alumina cement can be divided into four types: CA-50, CA-60, CA-70, and CA-80, among which CA-80 high alumina cement is the highest type. Application: Widely used in high-temperature kilns, metallurgy, building materials, and other fields. 2. Portland Cement Features: Good high-temperature stability and acid and alkali corrosion resistance. Classification: According to its furnace temperature, Portland cement can be divided into three types: P-type, M-type, and K-type. Among them, P-type Portland cement has the highest refractoriness, which can reach more than 1700℃. Application: Usually used in occasions that need to withstand high-temperature environments. 3. Refractory Mortar Features: Strong bonding with various materials, good high-temperature resistance, corrosion resistance, and earthquake resistance. Classification: According to its use and hardening method, refractory mortar can be divided into conventional refractory mortar, self-hardening refractory mortar amino resin self-hardening refractory mortar, and other models. Application: It can be used in refractory lining, thermal insulation concrete, heat-resistant concrete, and other fields. 4....
MS-2 dense lightweight acid-resistant thermal insulation castable is a building material with unique properties widely used in the industrial field. This castable is mainly made of raw materials such as aluminate cement, high-alumina fine material, and ceramsite, and several additives are added to improve its performance. Its main features include light volume, high compressive strength, strong acid and acid gas corrosion resistance, good thermal insulation effect, and low water absorption. In the power industry, MS-2 dense lightweight acid-resistant thermal insulation castable is widely used in acid-resistant protection of power chimney linings. Power chimneys often face erosion by acidic gases and liquids, so a protective material with superior acid resistance is needed. MS-2 dense lightweight acid-resistant thermal insulation castable can not only effectively resist acid corrosion, but its lightweight characteristics also reduce the chimney’s load. At the same time, its thermal insulation performance also reduces heat loss and improves energy efficiency. In addition, MS-2 dense lightweight acid-resistant thermal insulation castable also plays an important role in metallurgy, petrochemical, non-ferrous metals, and other industries. In these industries, it is often necessary to handle equipment and pipelines containing acidic substances, such as aluminum melting furnaces, medium frequency furnaces, coreless induction furnaces, rotary kilns,...
Refractory materials are the main components of glass melting furnaces, which have a decisive impact on glass quality, energy consumption, and product costs. The future of glass melting technology depends to a certain extent on the progress of refractory production, manufacturing technology, and product quality improvement. Commonly used refractory materials for glass melting furnaces are divided into four categories: fused casting refractory materials, sintered refractory materials, amorphous refractory materials, and insulating refractory materials. Each type of material contains several types. The chemical composition, physical properties, dimensional error, and appearance type of refractory materials should comply with national standards or industry standards, and the latest revised version should be selected, otherwise, they shall not be shipped. Silica bricks are widely used in glass-melting furnaces, and the main component is silicon dioxide (SiO2). The silica bricks used in glass melting furnaces require a SiO2 content of more than 94%, a maximum operating temperature of about 1600~1650℃, and a density of 1.8~1.95g/cm3. The apparent porosity is required to be less than 22%. The larger the porosity, the worse the quality of the silica bricks. Most of the appearance of silica bricks is white crystals, and the microscopic composition is the crystals of tridymite....
The selection of furnace lining castables mainly depends on many factors such as the type of furnace, operating temperature, chemical erosion, mechanical stress, etc. Different furnace linings require different materials of refractory castables due to their different working conditions. First, consider the operating temperature of the furnace. For example, the normal operating temperature of the heating furnace is generally 1250-1350℃, but the lining castable sometimes has to withstand high temperatures of 1400-1500℃. Therefore, refractory castables not only require sufficient high-temperature refractory performance and thermal shock resistance but also should have excellent resistance to high-temperature airflow erosion and smoke erosion. In this case, castables with special-grade alumina clinker, three-stone minerals, etc. as the main raw materials, combined with -Al2O3 micro powder, silicon micro powder as binder, and silicon micro powder as auxiliary binder can be selected. Such materials have excellent high-temperature performance and good thermal shock stability, which are suitable for furnace linings. Secondly, the chemical erosion of the furnace should be considered. For example, after the iron ore powder, fuel, and flux sintered in the ignition furnace are mixed, they will adhere to the furnace wall at a certain temperature, react with the refractory castable of the furnace lining, and...
Home Tel Email Inquiry
