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库兹聂茨铁合金厂与车里雅宾斯克冶金科技研究所研究和采用了一种使75％硅铁A1含量降低到小于0.1％炉外氧化精炼工艺。这种硅铁是冶炼变压器钢所必需的。这种工业生产工艺是根据在试验室条件下对实际工业生产硅铁中铝活性的变化制定的。在库兹聂茨铁合金厂工业生产电炉上,对这种工艺进行了实际应用试验。精炼工艺分为两个阶段:用固体氧化混合渣料处理液态75％硅铁和往渣子下面喷吹氧一氮混合气体。液态75％硅铁在从炉子放出的过程中,于铁水包内用氧化混合渣进行第一次处理。出铁结束后,将起了反应的液态氧化渣与炉渣一起从铁水包扒入渣罐。根据液态硅铁中的初始铝含量决定用氧化渣
Kuznetsk Ferroalloy Plant and Chelyabinsk Institute of Metallurgical Technology to study and adopt a method to reduce the A1 content of 75% ferrosilicon to less than 0.1% furnace oxidation refining process. This ferrosilicon is necessary for smelting transformer steel. This industrial production process is based on changes in the activity of aluminum in the actual industrial production of ferrosilicon under laboratory conditions. In the Kuznetsoe alloy plant industrial production of electric furnace, the practical application of this technology test. The refining process is divided into two stages: the treatment of liquid 75% ferrosilicon with solid oxidized mixed slag and the injection of mixed oxygen and nitrogen gas to the underside of the slag. Liquid 75% ferrosilicon during the discharge from the furnace, in the ladle with the oxidation of mixed slag for the first time. After the tapping is completed, the reacted liquid slag and slag are scooped into the slag pot from the ladle. According to the initial content of liquid ferrosilicon in the decision with the oxide residue