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Vol.25, No.1, 3 ~ 9, 1987
Title
Hot Metal desiliconization by Fe2O3 - MnO2 Flux Containing CaO - CaF2
최인섭In Sub Choi, 송규섭Kyu Sub Song
Abstract
The metallurgical characteristics of hot metal desiliconization by MnO₂-Fe₂O₃ flux containing CaO-CaF₂ were investigated and the following results were obtained. 1) It was found that the flux had nearly equal effectiveness for desiliconization to Fe₂O₃-CaO-CaF₂ flux and manganese content in the hot metal increased with increasing MnO₂ content in the flux, while with Fe₂O₃,-CaO-CaF₂ flux considerable manganese loss was observed. 2) Decarburization degree was about 10%, dephosphorization degree was between 8-12% based on the flux compositions studied. Desulphurization increased to 15-30% when MnO₂ was added in the flux. 3) Increasing slag basicity enhanced desiliconization and recovery of manganese. 4) The initial rate of desiliconization was thought to be controlled by transfer of silicon in hot metal.
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