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在分析脱磷机理及炉渣物相的基础上,以首秦公司100t转炉脱磷生产为例,研究了转炉双联脱磷、脱磷脱碳枪脱磷、转炉冶炼加出钢脱磷、三渣法脱磷等几种工艺的转炉深脱磷能力。实践表明:转炉冶炼加出钢脱磷工艺脱磷率最高,达到97.5%,脱磷后w(P)能达到0.002%;三渣法脱磷符合生产条件,在铁水w(P)达到0.150%的条件下,脱磷率达到96.7%,能有效降低冶炼成本。
Based on the analysis of dephosphorization mechanism and slag phase, taking the dephosphorization of 100t converter in Shouqin Company as an example, the dephosphorization of dephosphorization converter, dephosphorization of dephosphorization decarburization gun, dephosphorization of converter and dephosphorization of steel Slag dephosphorization and other processes of deep dephosphorization capacity of the converter. The practice shows that the dephosphorization rate of the converter smelting plus steel dephosphorization is the highest, reaching 97.5%, and the w (P) can reach 0.002% after the dephosphorization. The dephosphorization of the tri - slag method accords with the production conditions. When the hot metal w (P) reaches 0.150% Under the conditions of dephosphorization rate of 96.7%, can effectively reduce the cost of smelting.