宣钢单喷镁铁水脱硫技术应用与实践

Application and practice of separately spraying magnesium powder to desulphurize molten iron

介绍了宣钢炼钢厂采用单喷颗粒镁铁水脱硫工艺,改善了转炉冶炼原料铁水条件,同时对镁在铁水中的脱硫机理作了简要的叙述.该工艺在生产实践中不断优化,使铁水经过预处理后终点硫均达到0.010%(质量分数)以下,最低终点硫含量达到0.003%,满足了炼钢铁水要求.

The technology of separately spraying magnesium powder to desulphurize molten iron that can improve the conditions of the original smelting material in rolling furnaces is introduced, and the desulfurization mechanism is briefly described. The sulfur content of the hot metal after pre-desulfurization with the new devel-oped passivated magnesium powder decreased to lower than 0.010% (mass fraction), and the lowest sulfur con-tent is 0.003%. It meet the requirement of hot metal.