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CHARGE FOR MANUFACTURING FERROSILICON

机译:硅铁的生产费用

摘要

A charge composition for use in the manufacture of ferrosilicon contains quartzite, a carbonaceous reducing agent and an iron-containing material in the form of pellets of pyrite cinder, in the following proportions: 34-50 wt% quartzite, 30-34 wt% carbonaceous reducing agent, and the remainder being pyrite cinder pellets. Shavings of carbon steels are not used in the charge. The carbonaceous reducing agent contains 40-67 wt% nut coal and 33-60 wt% wood waste, wherein said wood waste is in the form of pellets or chips. The pyrite cinder pellets contain pyrite cinder and liquid glass as a binder, in the following proportions: 85-93 wt% pyrite cinder, and 7-15 wt% liquid glass on dry basis. The result is that of broadening the range of charge compositions available, using cheap and abundant raw material, and improving the operating characteristics of a furnace device by using in the ferrosilicon manufacturing process a charge composition that has low electrical conductivity, which leads to an increase in silica recovery, with an increase in the filter layer of the charge, and to a decrease in the formation of waste slag and, consequently, to the possibility of operating the furnace transformer at a higher voltage level, thus increasing the electrical efficiency of the furnace device.
机译:用于生产硅铁的装料组合物以以下比例包含石英岩,碳质还原剂和呈黄铁矿煤渣颗粒形式的含铁材料,其比例为:34-50wt%的石英岩,30-34wt%的碳质还原剂,其余为黄铁矿渣粒。装料中不使用碳钢屑。含碳还原剂包含40-67重量%的坚果煤和33-60重量%的木材废料,其中所述木材废料为粒料或碎片的形式。硫铁矿煤渣球粒包含硫铁矿煤渣和液态玻璃作为粘合剂,其比例如下:以干基计为85-93重量%的硫铁矿煤渣和7-15重量%的液态玻璃。结果是通过使用廉价且丰富的原料来拓宽可用的电荷组成的范围,并通过在硅铁制造过程中使用具有低电导率的电荷组成来改善熔炉装置的操作特性,从而导致电导率的增加在二氧化硅回收中,随着装料的过滤层的增加,废物渣的形成的减少,因此,有可能在更高的电压水平下操作熔炉变压器,从而提高了电炉的电效率。炉装置。

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