Al2O3-MgO-SiC-C brick for ladle working linings and preparation method thereof
An al2o3-mgo-sic-c, working lining technology, applied in the field of refractory materials, can solve the problems of reducing the material's resistance to molten iron and slag melting loss, adversely affecting the corrosion resistance of materials, and affecting the life of the lining of molten iron tanks. Excellent high temperature performance and slag corrosion resistance, improving the corrosion resistance of molten iron and slag, and improving the effect of medium and high temperature oxidation resistance
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[0056] Al in each example 2 o 3 -MgO-SiC-C bricks are prepared as follows:
[0057] First dry mix high alumina bauxite particles, corundum particles, silicate mineral particles, and sintered magnesia particles for 4 minutes, add binder and wet mix for 4 minutes, then add flake graphite and mix for 8 minutes, finally add magnesia fine powder, Corundum fine powder, SiC fine powder and anti-oxidant are mixed and milled for 12 minutes, and then pressed into green embryos after trapping, and then treated in a drying kiln at 200°C for 10 hours.
[0058] The compositions in parts by weight of raw materials in Examples 1 to 5 are shown in Table 1, and the Al prepared in Examples 1 to 5 2 o 3 -MgO-SiC-C brick performance test results are shown in Table 2.
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