Practice of Controlling Content of Residual Manganese in 260 t Converter at End of Smelting
With regard to the problem that the unsuitable content of residual manganese in converter impaired the product quality and impacted the production cost,the effect of such factors as manganese content in molten iron,liquid steel temperature at end of smelting by converter,bot-tom blowing state,slag alkalinity and slag quantity on residual manganese content at end of smelt-ing were analyzed.The analytical results showed that the bottom blowing state,slag alkalinity and slag quantity were the main causes which influenced the residual manganese content at end of smelting.After optimizing the converter bottom blowing system and converter blowing process,the residual manganese content at the end of smelting by converter could be stably controlled to be in the range from 0.10％to 0.12％.
end of smelting by converterresidual manganese contentbottom blowingslag quantity
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