calcium Silica cement for sale

High alumina insulation brick is a type of refractory brick that is made primarily from high-purity alumina, typically with an alumina content of 48% to 95%. These bricks are known for their excellent insulating properties, high-temperature resistance, and low thermal conductivity. They are widely used in various industrial applications where thermal insulation is critical.

It is mainly used for the partition walls of the carbonization chamber and combustion chamber of coke ovens, the regenerators and slag chambers of steel-making open-hearth furnaces, soaking furnaces, refractory materials of glass melting furnaces and ceramic firing kilns, and other kiln vaults. Load-bearing parts. It is also used in high-temperature load-bearing parts of hot blast furnaces and acidic open-hearth furnace tops.

Lightweight silica insulation brick is a type of refractory brick used for high-temperature insulation applications. It is made from high-purity silica combined with a lightweight aggregate and a binder to create a lightweight and thermally efficient material. The lightweight aggregate used in the production of silica insulation bricks helps to reduce the density of the material, making it lighter and easier to handle. The aggregate can vary but commonly includes materials such as expanded perlite, vermiculite, or lightweight clay. The choice of aggregate depends on factors such as desired insulation properties and application requirements.  

Silica brick is an acidic refractory material mainly composed of tridymite, cristobalite and a small amount of residual quartz and glass phases. Silica content is more than 94%. True density 2.35g/cm3. Resistant to acidic slag erosion. Higher high temperature strength. The load softening starting temperature is 1620~1670℃. It will not deform after long-term use at high temperatures. Thermal shock stability is low (heat exchange in water is 1 to 4 times). It uses natural silica as raw material, plus an appropriate amount of mineralizing agent to promote the transformation of quartz in the green body into tridymite. It is slowly fired at 1350~1430℃ in a reducing atmosphere. When heated to 1450°C, there will be a total volume expansion of about 1.5~2.2%. This residual expansion will make the seams close and ensure good air tightness and structural strength of the masonry.

Silica bricks for coke ovens are siliceous refractory products with tridymite as the main crystal phase used for building coke ovens. Modern coke ovens are large-scale thermal equipment built with tens of thousands of tons of refractory materials and nearly a thousand brick types, of which silica bricks account for 60% to 70%. Coke oven silica bricks are used to build coke oven regenerator walls, ramps, combustion chambers, carbonization chambers and furnace roofs, etc.

Silica is a common admixture in cement production. Because of its fine particles and stable chemical properties, it can react with minerals in cement, thereby affecting the physical and chemical properties of cement.