发明名称 VERFAHREN ZUR HERSTELLUNG EINER METALLMASSE, METALLURGISCHES PRODUKT UND DESSEN VERWENDUNG
摘要 <p>The present invention relates to a method for the production of abulk of molten steel in an electric arc furnace, comprising the formation of a foaming top slag. During at least one phase of the production process, a doping agent is added to the top slag with the aim of creating improved conditions for the reduction of the oxidized, valuable metal elements which exist in the top slag. The doping agent has a chemical composition containing 0-5% Si, 2-7% C, 0-3% Mn, the remainder essentially only iron and impurities which can normally appear in raw iron produced in the blast furnace process or other reduction process, a melting point <1350 ° C. and consists essentially homogeneous particles with substantially round or oval shape, obtainable through granulation of a melt with above-mentioned composition, comprising the disintegration of a stream of said melt to drops, which are cooled in a water bath to form a granulate.</p>
申请公布号 DE69917793(T2) 申请公布日期 2005.08.18
申请号 DE1999617793T 申请日期 1999.07.19
申请人 UDDEHOLM TECHNOLOGY AB, HAGFORS 发明人 GOERNERUP, M RTEN
分类号 C21B5/02;C21C5/00;C21C5/52;C21C5/54;C21C7/00;C22B1/248;C22C33/02;(IPC1-7):C21C5/52 主分类号 C21B5/02
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