The Production Process Ways of Refractory Material

According to the different dense degree and shape of products, the production process ways of zircon brick mainly contain sintering way, casting way, melt blowing way and non-firing way.
1. Sintering way
Sintering way is part of the raw material will be pre-fired into clinker, broken and sieved, and then according to a certain ratio and raw material mixture, after molding, drying and firing. The purpose of pre-burning raw material is to burn which the moisture, organic impurities, the gas of sulfate decomposition, in order to reduce the sintering shrink of products, to ensure the accuracy of product dimensions. The raw material is also sieved after crushing and grinding, because the billet is graded by powder of different particle sizes to ensure the closest packing to obtain a compact body. In order to homogenize the components and particles of each of the raw material and clinker, the kneading is carried out while the bonding agent is added to enhance the bonding strength of the blank.






2. Casting way
Casting way is the raw material through mixing and fine grinding and other processes, and then directly casting after high temperature melting. By cooling crystallization, annealing into products, such as melting mullite brick, corundum brick and magnesia brick,etc. Their green bodies are compact, mechanical strength is high, high temperature structural strength is large, slag resistance is good, the use range is expanding constantly.
3. Melt blowing way
Melt blowing way is after the batch melted, a method in which a high-pressure air or a superheated steam is blown and dispersed into fibers or hollow spheres. The products mainly used for light refractory, insulation material. In addition, can be also made of powder or granular unshaped refractory material.
4. Non-firing way
Non-firing way is a kind of unshaped refractory material preparation technology which has no need of firing and small energy consumption since the twentieth century.