| 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 DEG C and consists of 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> |
