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Drainage sand

source: time:2020-5-12 11:38:16

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一种偏心炉出钢用必不可少的耐火材料,即引流砂,保护渣主要以河南镁橄榄石,辽宁大石桥的电熔镁砂为主要原料,湖北宜昌碳素材料为添加剂,按特定的粒径和重量百分比进行组合,经混合而制备成引流砂,经试用后证明,该引流砂具有良好的分散流动性,耐火度高,不烧结 It is the best refractory for eccentric furnace steelmaking. It has no blockage, 100% drainage rate of tapping, no chemical reaction with molten steel and alloy composition, no variability of storage quality, and can meet the requirements of steelmaking process. nbsp is the best refractory for eccentric furnace steelmaking.

In order to ensure the stability of mold powder, the choice of base material is very important. Due to the requirements of casting conditions, mold powder should have low basicity and high viscosity. Its melting point is 1100-1250 degrees Celsius. The main chemical composition of base material is: SiO 2 30-60%, ALO 3 5-20%, CaO 10-30%..
At present, blast furnace slag, power plant ash, graphite tailings, cement clinker, wollastonite, vermiculite and perlite are widely used in China. According to relevant research institutes, cement clinker and wollastonite are better, but their prices are higher. Power plant fly ash with stable coal resources and without collecting drift beads can also be obtained by properly adding other base materials, solvents and carbon materials. For example, ZF-12 composite slag produced by Zhouzhuang Steel-making and Material-preserving Plant has stable performance, low carbon content, good surface quality of ingot, small head carburization and cap shear loss.

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