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亚速钢铁公司研究了影响平炉熔炼室内衬构件寿命的原因。平炉熔池内衬损毁的主要原因是萨特金矿的镁砂质量欠佳(SiO_2和CaO含量高),以及不再采用冶炼高磷生铁的工艺。烧结层与修补层的损毁是由于硅酸二钙的形成及其晶型转变所造成的结果。公司研制了用斯洛伐克生产的镁砂进行平炉小修、制作新炉底和修补熔炼室的技术操作规程并加以推广应用。斯洛伐克的镁砂化学成分与矿物成分不会形成硅酸二钙。这就可以提高平炉熔炼室内衬构件寿命,大大缩小镁砂消耗,减少修理所用劳动量和持续时间。
The company has investigated the reasons that affect the life of the liners in flat hearth furnaces. The main reason for the damage of the hearth melting pool lining is the poor quality of magnesia (high content of SiO 2 and CaO) in Sutter gold mine and the process of smelting high-phosphorus pig iron. Sintered layer and the repair layer damage is due to the formation of dicalcium silicate and its crystalline form as a result of the transformation. The company has developed and implemented the technical operation procedure of using the magnesia made in Slovakia for overhauling the open hearth, making new furnace bottom and repairing the melting room. Slovakia magnesia chemical composition and mineral composition does not form dicalcium silicate. This will increase the life of the lining furnace in the hearth melting chamber, greatly reduce the consumption of magnesia, and reduce the amount of labor and duration of repairs.