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研究了LF炉渣脱氧剂加入量、LF动力学条件及RH后期钙处理对脱硫效果的影响。结果表明:向LF精炼渣中加入300 kg以上的铝粒时可以将渣中w(FeO+MnO)控制在0.5%以下,从而将钢液中w(S)由原来的30×10-6降至6×10-6;当底吹搅拌氩气流量为500 L/min,搅拌10 min后,钢液中w(S)可以降至6×10-6,过高或过低的吹氩流量都会影响脱硫效率;RH后期钙处理没有脱硫能力,但是钙线的加入有利于抑制回硫,并将硫含量保持在较低水平。
The effects of LF slag deoxidizer addition, LF kinetics and post-RH calcium treatment on desulfurization were investigated. The results show that the w (S) content in the molten steel can be reduced from 30 × 10-6 down to below 0.5% by adding more than 300 kg aluminum particles into the LF refining slag. To 6 × 10-6; when the bottom blowing argon flow rate of 500 L / min, stirring 10 min, the liquid steel w (S) can be reduced to 6 × 10-6, too high or too low argon flow Will affect the desulfurization efficiency; late RH calcium treatment without desulfurization capacity, but the addition of calcium is conducive to inhibition of sulfur back to the sulfur content and to maintain a low level.