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在 HB—50型铜包精炼炉上增设吹氧枪,形成了在真空下吹氧精炼装置(即 VOD),本文概述了本设备与电弧炉联合冶炼不锈钢的工艺操作,真空下精炼过程的控制,成品铜可达到超低碳的要求,18—8型不锈钢铬的回收率波动在86～100%,且只需用高碳铬铁,成品质量明显提高,去氢率在46～69%之间,氮的最终含量在200ppm 以下,含氧量20ppm 以下,钢的无发纹率达99%,成本与电弧炉返回法对比降低199.25元/吨。若与电弧炉冶炼超低碳不锈钢对比,成本降低的幅度更大。
An oxygen blowing gun is added to the HB-50 type copper clad smelting furnace to form a blowing oxygen refining device (ie, VOD) under vacuum. This article summarizes the process operation of smelting stainless steel by this equipment and an electric arc furnace, controlling the refining process under vacuum , Finished copper can reach ultra-low carbon requirements, 18-8 stainless steel chromium recovery rate fluctuations of 86 to 100%, and just use high-carbon ferrochromium, significantly improve the quality of finished products, dehydrogenation rate of 46 to 69% Between the final nitrogen content of 200ppm or less, the oxygen content of 20ppm or less, the non-hairline grain rate of 99%, the cost reduction compared with the electric arc furnace return 199.99 yuan / ton. If compared with EAF smelting ultra-low carbon stainless steel, the cost reduction is even greater.