180 t RH真空精炼炉脱硫工艺开发及应用

doi:10.13228/j.boyuan.issn0449-749x.20180134

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Abstract The desulfurization technology in the RH process was developed to reducethe sulfur mass percent in the non-oriented silicon steel. The desulfurization degree was controlled at 30%-60% in a RH reactor， and the ratio of in the W800 non-oriented silicon steel with[w([S])≤0.005 0%] was increased from 72.19% upto 98%. Meanwhile， this process was able to ensure that [w(T[O])＜]0.002 0% and[w([N])＜]0.001 5% at the end of the RH treatment. Through the slag deoxy-modification during the tapping and the RH treatment，[w((TFe))]at the end of the RH treatment was controlled below 3%. The slag basicity was kept above 5.0， and the sulfur distribution ratio between slag and steel was controlled at 80-260，which is favored to the improvement of the desulfurization process in the RH treatment.

Key words： non-oriented silicon steel RH vacuum furnace Desulfurizer Ladle Slag

Received: 28 March 2018 Published: 20 November 2018

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	DIAO Jia-Qi

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DIAO Jia-Qi. Development and application of desulfurization process for 180 t RH vacuum refining furnace[J]. Iron and Steel, 2018, 53(11): 41-46.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20180134 OR http://www.chinamet.cn/Jweb_gt/EN/Y2018/V53/I11/41

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