摘要:
在实验室利用MoSi2高温管式电阻炉研究了LF炉精炼渣的成分和精炼渣粒度对Q345钢脱硫的影响。结果表明在精炼渣碱度较高的条件下(R=3~5),随着碱度增大,脱硫率逐渐增加;Al2O3含量在18%~28%,BaO含量在6%~14%,CaF2含量在0~10%的范围内,试验渣有一最佳脱硫率,运用正交分析法对精炼渣进行优化,得出高碱度精炼渣的优化渣系为:R=3~55,wAl2O3=23%,wBaO=10%,wCaF2=5%,在精炼渣成分不变的条件下,可通过减小精炼渣的粒度来提高钢液的脱硫率。
关键词:
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Q345钢 /
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LF炉 /
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精炼渣 /
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碱度 /
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脱硫率
Abstract:
The effects of LF refining slag ingredient and slag particle size on Q345 steel desulfurization had been determined by a MoSi2 shaft type electric resistance furnace in laboratory.Test results showed that under refining condition of higher basicity (R=3~53~4.5),the desulfurization rate gradually increased with increasing basicity.When content of Al2O3 was in range of 18%~28%,BaO in range of 6%~14% and CaF2 at 0~10%,there is a optimal desulfurization rate for experimental slag.When refining slag composition,remains constant,particle size decreasing led to increase in desulfurization rate.The optimal slag ingredient at high basicity was obtained by using orthogonal method with related paramenters as follows:R=3~55,wAl2O3=23%,wBaO=10%,wCaF2=5%.The higher desulfurization rate can be achieved by reducting particle size of the refining slag.
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