Reducing chromium content of metallurgical slags comprises adding them to bath of molten iron with low carbon content which is then raised while simultaneously adding energy

摘要

Method for reducing the chromium content of metallurgical slags containing 2 - 4 wt% of Cr comprises adding them to a bath of molten iron containing less than 1 wt% C. The carbon content is then raised to 2 - 4 wt% while simultaneously adding energy. Slag with a Cr content of 0.1 wt% is produced and separated off. A cooling agent, especially scrap metal, is added to the molten iron and its C content lowered to below 1 wt%. Part of the Cr-containing melt is separated off and the remainder passed to the converter for treating a new batch of melt.