Application research of carbon dioxide in BOF steelmaking process
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摘要: 對煉鋼溫度下CO2與熔池元素的反應機理進行了研究,并進行了相關熱力學和動力學分析.利用30 t轉爐進行頂底復吹CO2氣體的煉鋼工藝試驗.試驗結果表明:采用頂底復吹CO2試驗爐次煙塵量減少了11.15%,煙塵TFe降低了12.98%,爐渣鐵損降低了3.10%,試驗終點鋼液中[N]、[P]含量分別降低了50%和23.33%.轉爐頂底復吹CO2氣體煉鋼工藝是完全可行的,為轉爐煉鋼節能降耗提供了新方法.Abstract: Reaction mechanism between CO2 and molten pool elements at the steelmaking temperature was researched. The related thermodynamics and kinetics were analyzed. The industrial test by top and bottom blowing CO2 was carried out in a 30 t converter. It is discovered that the amounts of smoke dust and T-Fe are reduced by 11.15% and 12.98% on average. Iron loss of slag is lowered by 3.10%,and the contents of nitrogen and phosphorus are decreased by 50% and 23.33% respectively. The new process is absolutely feasible,which will provide a new method for saving energy consumption in BOF steelmaking process.
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Key words:
- steelmaking /
- dust /
- slag /
- carbon dioxide
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