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针对重钢含[V+Ti]0.28%的铁水在转炉冶炼过程中,由于钒、钛氧化物的作用,使其炉渣完全熔化温度较普通铁水低、引起炉衬侵蚀严重、炉龄降低的问题,开展了控制炉渣中TFe含量调整炉渣熔化性温度的相关研究。在实验室研究了不同碱度下,含一定钒、钛氧化物的炉渣TFe含量与炉渣完全熔化温度的关系,得出与普通铁水炉渣过热度相当的合适TFe含量控制范围,并对其进行工业性生产试验。结果表明:当含V_2O_5+TiO_2为4%、R=4.5的炉渣、TFe控制在21%、MgO为9%时,炉渣过热度可达与普通炉渣相当,并同时满足高效脱磷率的要求。
For the heavy steel containing [V + Ti] 0.28% hot metal in the converter smelting process, due to the vanadium and titanium oxides, the melting temperature of the slag is lower than ordinary hot metal, causing serious erosion of the lining and reducing the furnace age. Relevant research on controlling TFe content in slag to adjust slag melting temperature was carried out. In the laboratory, the relationship between TFe content of slag with certain vanadium and titanium oxide and the complete melting temperature of slag was studied in laboratory under different alkalinity, and the control range of suitable TFe content which is equivalent to the superheat degree of ordinary molten iron slag was obtained. Sexual production test. The results show that when the slag containing 4% V2O5 and R = 4.5, the TFe is controlled at 21% and the MgO is 9%, the superheat degree of the slag can reach to that of ordinary slag and meet the requirements of high-efficiency dephosphorization rate.