Clay refractory raw materials in China is rich, simple processing, low cost, therefore more than any other refractorymaterials used more widely, it is used in blast furnace, hot blast furnace, cupola furnace, ladle and pouring steel system and soaking furnace, heating furnace, melting furnace of non-ferrous metal, kiln and thermotechnical equipment chimneys and all flue in silicate industry and chemical industry. clay brick Al2O3 content in general in more than 40%, the content of Fe2O3 is less than 2 ~ 2.5%. The ingredients of the clinker is 65 ~ 85%, 35 ~ 15% with clay. Will be crushed and milled with clinker clay mixed grinding, again with the particle clinker together formulated as semi dry mud, high pressure forming, sintering at about 1400 DEG C, better performance. clay bricks under high temperature is acidic, alkaline slag erosion resistance ability is a bit poor, but with the Al2O3 content increased. The thermal stability of silica brick, magnesia brick (see magnesia brick) as well.
