Fused Mullite Product

Fused mullite product

Key words:Cast mullite products, cast mullite bricks

Fused mullite product adoprs electrocast refractories.through (brick), mainly by high bauxite or industrial alumina or silica, clay ingredients in electric arc furnace, the temperature between 1900-1900 ℃ after melting, casting molding and annealing.Its main mineral composition is 60% ~ 70% of the molinite casting refractory material, is weakly acidic refractory material.Also known as the electric melting mullite brick, commonly known as iron brick or black iron brick.Fused mullite brick is dense, crystallization is bigger than sintered mullite refractory for 1730 ~ 1800 ℃, rul start temperature is 1700 ℃, high temperature strength and high wear resistance, corrosion resistance stronger.The thermal expansion coefficient is small.Thermal conductivity is also high, so heat resistance is better than other fused castings.Its high temperature performance mainly depends on the content of alumina and mullite phase, and the uniformity of glass distribution.

    It is mainly used in hot blast furnace roof, blast furnace body and bottom, glass melting kiln storage chamber, ceramic sintering kiln, oil cracking system dead Angle furnace lining. The physical and chemical index of sintered mullite products (brick)