SAF Method for recovering valuable metals from stainless steelmaking converter slag by Submerged Arc Furnace

摘要

A method for recovering valuable metals in stainless steel making slag using a melting reduction electric furnace (SAF) is provided. The method of the present invention, by using a (SAF) a smelting reduction electricity, a method for recovering valuable metals from CaO, SiO _2, Al ₂ O _3, MgO, and stainless steelmaking converter also chromium slag containing Cr ₂ O ₃ (SAF), adding FeO in the range of 2.5 to 50 wt% per 1 tonne of the chromium slag to the above-mentioned Ham Cr-containing slag, Reducing the chromium slag using the amount of carbon in the range satisfying the relationship (3); And the basicity [CaO + MgO) / SiO ₂ ] of the produced slag is controlled in the range of 0.7 to 1.5 after the melting and reduction of the chromium slag.