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公开(公告)号：US3953197A
公开(公告)日：1976-04-27
申请号：US472892
申请日：1974-05-23
CPC分类号： C21C7/0025 , C21C5/562 , Y02P10/216
摘要： Particulate material such as iron scrap is melted down into a melt which is received in a melt retaining zone. During the reception of the melt in this zone, liquid iron of the melt is contacted with an elongated upright body of carbon soluble in the liquid iron, or with a lining of such carbon adherent to the bottom of the melt retaining zone, below any slag which floats on the liquid iron of the melt. The liquidus point of the melt is lowered by the resulting carburization of the iron, thereby facilitating the retention of the liquid iron in the melt retaining zone.
摘要翻译： 诸如废铁的颗粒材料熔化成熔体，熔体保持在熔体中。 在该区域中的熔体接收期间，熔体的液态铁与可溶于液态铁的细长的直立体接触，或者与粘附到熔体保持区底部的碳的衬里接触，低于任何渣 其浮在熔体的液态铁上。 熔体的液相点由于铁的渗碳而降低，从而有利于将液态铁保持在熔体保持区中。
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公开(公告)号：US3986865A
公开(公告)日：1976-10-19
申请号：US471073
申请日：1974-05-17
CPC分类号： C21C5/34 , C21C5/32 , C21C5/562 , Y02P10/216
摘要： A charge consisting of scrap, sponge iron, pellets and the like is admitted into a vertically arranged melting chamber so as to form a column therein. A burner lance generates a flame which melts the column from below so as to produce a melt and an FeO slag. A transportable and tiltable vessel is provided beneath the melting chamber and contains a quantity of pig iron. The melting chamber has an opening at the bottom thereof through which the melt and the slag flow into the vessel to form a mixture containing between 30 and 60 percent by weight of pig iron. Alloying elements and cooling agents are added to the mixture and the resulting molten mass is then at least partially refined in the vessel by blowing with oxygen. During the blowing operation, reaction of the slag and the pig iron occurs and a pourable steel having a desired composition is thereby obtained. The melting of the charge in the melting chamber is carried out without regard to the extent of reaction of the slag and of the pig iron which is required to produce steel of the desired composition.
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