Optimization of Full Volume Hot Metal Steelmaking Process for 65 t Converter
The study is conducted on the full volume hot metal steelmaking process of the 65 t converter in Mas-teel.The theoretical calculation result proves the cooling effect of the iron ore used in steelmaking is 3.76 times that of steel scrap,3.5 t iron ore needs to be charged into the converter in the oxygen blowing process in order to balance the redundant heat in the melt bath.By adjusting the amount and timing of charging iron ore into the converter at early stage of oxygen blowing process,optimizing the oxygen lance positioning and flowrate in oxygen blowing process changing the endpoint control mode,good slag melting result in the full volume hot metal steelmaking process is obtained,the dephos-phorization result is guaranteed,the addition amount of the slag forming agents per ton of steel including lime and mag-nesium pellets are reduced by 7.4 kg,1.2 kg respectively,the consumption of iron and steel materials per ton of steel is reduced by 11.1 kg,the targets for reliable steelmaking production of full volume hot metal,cost decreasing and benefit increasing are achieved.
ConverterFull volume hot metalSteelmaking controlResult
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