Method for producing steel

专利名称：Method for producing steel发明人：Grigori Galperin,Anatoli

Boutchenkov,Gregory M. Gitman,RafikAizatulov

申请号：US08/263518申请日：19940622公开号：US05417740A公开日：19950523

摘要：A method of steelmaking in an at least partially refractory lined furnace. Theprocess includes the steps of retaining a portion of a hot liquid slag from a previous heat,and altering the retained slag with basic slag forming material to increase its basicity,melting temperature, and viscosity, and to reduce its melting temperature below themelting point. The altering step is performed before charging ferrous materials for a newheat. Altered slag is then positioned on the bottom of the furnace, or on the furnacewalls, or both, using a slag coating technique. Ferrous metal is then charged, after which asecond charge of basic slag forming materials may be added prior to and/or during thefirst controllable oxygen blow. A slagging off step is conducted after less than one-halfof the oxygen is introduced into the heat and when the mass of oxygen alreadyintroduced is sufficient to oxidize approximately all of the silicon introduced with hotliquid metal charged into the furnace.

申请人：ZAPTECH CORPORATION

代理机构：Needle & Rosenberg

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