Research and Application of High-efficiency Desulfurization Technology for Converter
Changgang Steel Plant mainly produces steel grades with a requirement of w(S)≤0.040％,but the w(S)of molten iron is 0.020％～0.070％,which fluctuates greatly and has a large amount of slag(about 1.0％).Without the pretreatment process of molten iron,measures such as high alkalinity,residual manganese extraction,and double slag process are adopted to achieve a desulfurization rate of over 40％,an increase of about 10％,laying the foundation for the direct up process after the furnace and reducing the refining furnace process cost by about 20 yuan/t.
high alkalinityresidual manganesestraight up after shutdown
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