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提高铁合金电炉功率和使用安加尔半焦,在强化冶炼过程的同时,能促使铝充分还原。库茨涅兹克铁合金厂75%硅铁中铝的平均含量在1975年达到了1.8%,而在1970年是1.4。%然而,这几年,主要要求使用含铝不超过1.2～1.5%的硅铁。以前采用的精炼方法(吹压缩空气精炼合成炉渣法和多次倒注精炼多组份氧化物法)对大规模生产不切合实际需要。库茨涅兹克铁合金厂采用了更简单的硅铁精炼方法,即用炭酸铁矿——菱铁矿精炼
Improve ferroalloy electric furnace power and the use of Angar semi-coke, in strengthening the smelting process at the same time, can promote the full reduction of aluminum. The average content of 75% ferrosilicon in the Kuznetsky Ferroalloy Plant reached 1.8% in 1975 and 1.4 in 1970. However, in recent years, the main requirement is to use ferrosilicon not exceeding 1.2-1.5% of aluminum. The previous refining methods (blowing compressed air to synthesize the slag method and the multiple refinishing multi-component oxide method) are not practical for large-scale production. The Kutzszyk Ferroalloy Plant uses a simpler method of ferrosilicon refining, namely the use of carbonated iron ore - siderite refining