Practice of Process for Control of Tantalum Content in Steel MHTlOTa Melting by 30t EAF-LF-VOD/VHD Flowsheet

Special Steel ›› 2016, Vol. 37 ›› Issue (2): 44-46.

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Practice of Process for Control of Tantalum Content in Steel MHTlOTa Melting by 30t EAF-LF-VOD/VHD Flowsheet

Sha Weixing¹ , Wang Kun¹ , Chen Xiuqiang¹ , Zhang Lina² , Qin Siwei¹

1 2nd Steelmaking Plant, 2 Technical Center, Fushun Special Steel Co Ltd, Fushun 113001

Received:2015-11-02 Online:2016-04-01 Published:2022-08-08

30t EAF-LF-VOD/VHD 流程冶炼 MHTlOTa 钢钽含量控制的工艺实践

沙卫星¹，王坤¹，陈秀强¹，张丽娜²，秦四伟¹

抚顺特殊钢股份有限公司1 第二炼钢厂;2 按术中心，抚顺113001

作者简介:沙卫星(1982-)，男，工程师，2007年河南科技大学(本科)毕业，特殊钢冶炼工艺及钢锭质量控制研究。

Abstract

Abstract: The effect of [N] , [O] and liquid temperature on tantalum yield of steel MHT10Ta is analyzed by commercial test. The results of pilot 9 heats commercial production show that with melting in EAF by oxidation method, deoxidizing in LF by G powder, VOD refining vacuum ≤67 Pa for ≥15 min, VHD heating insuring Al content in steel ≥0.02% , liquid temperature 1635-1645°C , Ar flow rate 100 L/min, adding tantalum bar 0.125% , inserting Fe-B according 0.01% content before tapping, tapping temperature 1580-1595℃ and Ar shielding casting； the tantalum content in finish products of steel MHT10Ta is 0.08%-0.105% , the yield of tantalum is up to 60% by process optimization.

Key words: MHT10Ta, 30t EAF-LF-VOD/VHD, Tantalum, Yield, Process Practice

摘要： 工业试验和分析了[N]、[O]和钢水温度对MHT10Ta钢钽收得率的影响。9炉工业生产试验结果表明,电弧炉采用氧化法冶炼;LF用C粉脱氧;VOD真空度≤67 Pa,时间≥15 min;进VHD加热,确保Al含量≥0.02%,温度1635~1645℃,Ar气流量100 L/min,按0.125%加入钽条,出钢前按0.01%插入Fe—B,出钢温度1580~1595℃,Ar气保护浇注,MHT10Ta钢成品钽含量0.08%~0.105%,通过工艺优化,钽的收得率可达60%。

关键词: MHT10Ta钢, 30t EAF-LF-VOD/VHD, 钽, 收得率, 工艺实践

Sha Weixing , Wang Kun , Chen Xiuqiang , Zhang Lina , Qin Siwei. Practice of Process for Control of Tantalum Content in Steel MHTlOTa Melting by 30t EAF-LF-VOD/VHD Flowsheet[J]. Special Steel, 2016, 37(2): 44-46.

沙卫星, 王坤, 陈秀强, 张丽娜, 秦四伟. 30t EAF-LF-VOD/VHD 流程冶炼 MHTlOTa 钢钽含量控制的工艺实践[J]. 特殊钢, 2016, 37(2): 44-46.

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Practice of Process for Control of Tantalum Content in Steel MHTlOTa Melting by 30t EAF-LF-VOD/VHD Flowsheet

30t EAF-LF-VOD/VHD 流程冶炼 MHTlOTa 钢钽含量控制的工艺实践

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