According to different products the density degree and shape, sintering process and casting method and melt blowing method, etc. Sintering process is to some presintering mature material, raw material crushing and screening, and then according to certain proportion mixed with raw material, after forming, drying and firing. Raw material is the purpose of presintering including water, organic impurities, sulfate decomposition of gas burning, in order to reduce the sintering shrinkage products, ensure the accuracy of the product dimension. Raw materials also need through the sieve after crushing and grinding, because blank graded by different particle size of powder, can guarantee the most tightly packed with dense body. In order to make all kinds of raw meal and clinker composition and particle uniformity, must carry on the mixing, add the binder, to increase billet bonding strength. Combined with the clay is added as silicate aluminum billet, magnesia billet join sulfite pulp waste liquid, siliceous billet add lime milk, etc. According to the amount blank water content, semi-dry method can be used molding (containing about 5% moisture), method of plastic molding (containing about 15% moisture) and grouting process (containing about 40% moisture content). Then the drying and firing. Casting method is the raw material through blending ingredients and fine grinding process, such as in high temperature melting, casting directly, by cooling crystallization, annealing into products. Such as fused mullite brick, corundum brick, magnesite brick, etc. Their body density, high mechanical strength, high temperature structural strength, good slag resistance, use scope expanding constantly. After molten melt injection method is the ingredients, with a high pressure air or superheated steam injection, to disperse into fiber or hollow ball method. Products are mainly used as lightweight refractory and heat insulation materials. In addition, it can be made into powder or granular monolithic refractories, temporary unavailable to tar, asphalt, cement, phosphate, sulfate, or chlorate binder cementation, direct use without forming and sintering.
