Industry Knowledge of Phosphate Refractory Brick

Phosphate refractory bricks are a type of high temperature resistant brick made from phosphate materials, which are widely used in high temperature industrial furnaces in the fields of metallurgy, glass, ceramics, cement, and petrochemicals. These refractory bricks are classified into several grades according to their chemical composition, physical properties, and thermal stability.

The main technical parameters of phosphate refractory bricks include bulk density, apparent porosity, compressive strength, thermal conductivity, and refractoriness. Different grades of refractory bricks have different technical parameters, which determine their performance and application range. For example, high grade phosphate refractory bricks are characterized by high refractoriness and excellent thermal shock resistance, while low grade phosphate refractory bricks are mainly used in low temperature heating equipment.

Phosphate refractory bricks are generally produced through the processes of mixing, molding, drying, and firing. The raw materials used in the production of these bricks include phosphate rock, bauxite, clay, and other additives. In the mixing process, the raw materials are thoroughly blended to ensure uniformity of the mixture. The blended mixture is then molded into the desired shape and size, after which it is dried to remove any moisture. Finally, the bricks are fired at high temperatures to obtain the required strength and thermal stability.

In recent years, the demand for phosphate refractory bricks has increased rapidly due to the growth of high temperature industries such as steelmaking, non-ferrous metal smelting, and glass manufacturing. Manufacturers of these bricks have been striving to improve their production technology and product quality to meet the growing demand for these bricks. With the continuous innovation and development of the industry, the application range and performance of phosphate refractory bricks will continue to improve, making them an essential material for various high temperature industrial furnaces.