| 摘要 |
<p>The present invention pertains to the ferrous-metal metallurgy and more precisely to the production of steel in converters. This invention relates to a method for melting steel in converters, wherein said method is characterised by its economical features concerning the liquid steel output and the use of metallurgical waste as well as by the choice of metallic and non-metallic iron-containing solid materials. This method is carried out in a converter that is fitted with blowing device for separately or simultaneously feeding an oxidising gas and a neutral gas. This method uses cast-iron as the metallic feedstock introduced into the converter, whereby an oxide iron-containing material is loaded onto the feedstock in a proportion of between 10 and 30 wt.% thereof before eventually adding slag-forming and iron-containing materials. A deoxidising blowing is carried out simultaneously for a time period ensuring the deoxidisation of the iron from its oxide iron-containing materials and until the iron oxides represent from 15 to 60 % of the slag content. This method finally includes carrying out an oxidising refining process.</p> |
