Clay bricks 1.Composition and manufacturing Clay bricks are made of 50% soft clay and 50% hard clay clinker according to certain particle size requirements. After molding and drying, they are fired at a high temperature of 1300~1400℃. It belongs to the silicon-aluminum series products, and is a refractory product with an Al2O3 content of 30-48% […]

Glass wool and asbestos are two different materials with significant differences in composition, performance and safety. Glass wool asbestos Ingredients and manufacturing It is mainly composed of glass fiber and a small amount of additives. It is a kind of artificial synthetic fiber. It is made by melting glass and pulling it into fiber shape, […]

Corundum and mullite are two different substances with obvious differences in composition, properties and applications. Corundum Mullite Composition and structure The main component is α-Al₂O₃ (aluminum oxide), which belongs to the trigonal crystal system and the crystal is short columnar. The true density of corundum is 3.85~4.01 g/cm³, the hardness is 9, and the melting […]

Example: Brick size 230mm*114mm*75mm, density 2.6g/cm³ Volume = 23*11.4*7.5 Volume = 1966.5 Calculate weight: Weight = 1966.5×2.6/1000 =5112.9/1000 Weight ≈ 5.1 kg The weight of this refractory brick is about 5.1 kg. Weight of clay bricks

There are many types of building insulation materials. According to different classification methods, they can be divided into organic, inorganic and composite materials. The following are some common building insulation materials: 1. Organic insulation materials Polystyrene foam board (EPS/XPS) Molded polystyrene foam (ordinary foam board): has good insulation performance, but poor fire resistance. Extruded polystyrene […]

1. Raw material preparation It is necessary to prepare raw materials such as silica sand, carbon materials (such as petroleum coke, anthracite, etc.), and quartz sand. These raw materials are the basis of reaction-sintered silicon carbide, and their quality and proportion will affect the performance of the final product. 2. Crushing and screening The prepared […]

Cordierite Mullite Shelf Board, Corundum Mullite Shelf Board and Silicon Carbide Shelf Board are three different materials of shelf boards, which differ in composition, performance and application. Composition: Cordierite Mullite Shelf Board: The main chemical component of cordierite is magnesium aluminum silicate, and the main chemical component of mullite is island aluminum silicate. The combination […]

1. Classification by chemical properties Acidic refractory: usually refers to refractory with SiO2 content greater than 93%. Its main feature is that it can resist the erosion of acidic slag at high temperature, but it is easy to react with alkaline slag. Alkaline refractory: generally refers to refractory with magnesium oxide as the main component. […]

The silicon carbide rod begins to oxidize when used in the air to 800℃. When the temperature reaches 1000-1200℃, a protective silicon dioxide film is formed on the surface of the heating part. At 1200℃, cristobalite is formed. When the temperature rises above 1527℃, the protective film will be damaged and the oxidation rate will […]