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nature : mullite (3Al2O3 & # 183; 2SiO2) mainly composed of high - alumina refractory. General alumina content at 65% to 75%. In addition to the mineral composition mullite, which contain lower alumina also contain a small amount of side glass and quartz; With the higher alumina also contain a small amount of corundum. Refractoriness higher, up to 1,790 ° C Load began softening temperature 1600 ° C ~ 1700. Cool strength at room temperature 70 to 260MPa. A good thermal shock resistance. Mullite is sintered and fused MO brick to brick two. Mullite sintering high alumina brick clinker as the main raw material, adding a small amount of clay or raw bauxite for the binder, shape, and made firing. Mo fused to a high brick bauxite, alumina and refractory clay as raw material, by adding charcoal or coke fine for the reductant, introduced after forming Reduction Act fused to create. Fused mullite than the crystallization of sintering mullite, thermal shock resistance than good sintering products. The high temperature properties of alumina mainly depends on the content and mullite phase glass uniform distribution. Mainly for Hot Stove Top, and the blast furnace bottom, glass melting furnace heat storage room, ceramic kiln, oil cracking lining systems such as a corner.
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