电弧炉返回法冶炼Crl3型不锈钢工艺优化实践

特殊钢 ›› 2019, Vol. 40 ›› Issue (6): 34-38.

电弧炉返回法冶炼Crl3型不锈钢工艺优化实践

蒋世川^1,2，张健^1,2，付建辉^1,2，陈琦^1,2

1攀钢集团研究院有限公司，成都610303 ；
2海洋装备用金属材料及其应用国家重点实验室，鞍山114009

收稿日期:2019-05-07 出版日期:2019-12-01 发布日期:2022-05-10
作者简介:蒋世川(1984-)，男，高级工程师,2007年安徽工业大学(本科)毕业,特种冶金研究和材料开发。

Process Optimization Practice of Electric Arc Furnace Recirculating Metal for Stainless Steel Cr13

Jiang Shi Chuan^1,2, Zhang Jian^1,2 ,Fu Jian Hui^1,2 ， Chen Qi^1,2

1 Pangang Group Research Institute Co Ltd, Chengdu 610303 ；
2 State Key Laboratory of Metal Material for Marine Equipment and Application, anshan 114009

Received:2019-05-07 Published:2019-12-01 Online:2022-05-10

摘要/Abstract

摘要： 通过提高返回比并使炉料小型化,控制冶炼过程开始吹氧温度、升温速度和终点温度,将高熔点、低碱度渣系优化为CaO/SiO21.4～2.5的高碱度、低熔点的45.6～53.6 CaO-21.6～32.0 SiO₂-3～13 Cr₂O₃-5～10MgO-5～10 Al₂O₃-0～5 CaF₂复合渣系,以及采取合理的供电制度等工艺措施,使不锈钢冶炼时间缩短30 min/炉,电耗降低75 kWh/t,电极消耗降低1.89 kg/t,炉龄提高64次,渣中Cr₂O₃含量降低到6%～12%。

Abstract: With using the process measures including increasing the return ratio and miniaturizing the burden, con¬trolling the start-blowing oxygen temperature, heating rate and end-point temperature, modifying the high melting point and low basicity slag series to high basicity of CaO/ SiO₂ 1.4 ~2.5 and low melting point 45.6 ~ 53.6 CaO-21.6 ~ 32.0 SiO₂- 3 ~ 13 Cr₂O₃-5 - 10 MgO-5 ~ 10 Al₂O₃-0 ~5 CaF₂ slag series, and reasonable power supply system the tap to tap time of stainless steel is shortened by 30 minutes per heat, the power consumption is reduced by 75 kWh/t, the electrode consumption is reduced by 1. 89 kg/t, the furnace life is increased by 64 heats, and the content of Cr₂O₃ in slag is reduced to 6% 〜 12%

蒋世川, 张健, 付建辉, 陈琦. 电弧炉返回法冶炼Crl3型不锈钢工艺优化实践[J]. 特殊钢, 2019, 40(6): 34-38.

Jiang Shi Chuan, Zhang Jian, , Fu Jian Hui, Chen Qi, . Process Optimization Practice of Electric Arc Furnace Recirculating Metal for Stainless Steel Cr13[J]. Special Steel, 2019, 40(6): 34-38.