红土矿镍铁水直接冶炼不锈钢工艺

›› 2015, Vol. 31 ›› Issue (5): 56-60.

红土矿镍铁水直接冶炼不锈钢工艺

樊君¹,石红勇¹,冀中年¹,王艳彪²,张慧²

1. 中冶东方工程技术有限公司
2.

收稿日期:2015-03-11 修回日期:2015-05-07 接受日期:1900-01-01 出版日期:2015-10-05 发布日期:2015-10-05
通讯作者: 樊君 E-mail:fanjun-lg@beris.cn

Technical of making stainless steel with hot metal from laterite nickel ore

1. BERIS Engineering and Research Corporation
2.

Received:2015-03-11 Revised:2015-05-07 Accepted:1900-01-01 Online:2015-10-05 Published:2015-10-05

摘要/Abstract

摘要： 低品位氧化镍矿（俗称红土镍矿）的合理利用是解决我国不锈钢产业镍资源缺乏的重要途径之一。开发了以红土矿镍铁水为主原料，采用转炉对镍铁水进行预处理生产不锈钢母液工艺，替代传统的“镍铁锭+电弧炉”工艺，继而与AOD工艺衔接完成300系列不锈钢的冶炼。该工艺技术在国内某不锈钢厂生产数据表明：预处理转炉终点半钢平均w（C）=2.5%，w（Si）=0.27%，脱硅率为84.3%；平均w（P）=0.028%，脱磷率61.5%。生产SUS304不锈钢成品化学成分完全满足GB／T20878—2007要求，可大幅降低生产成本。。

关键词: 红土镍矿, 含镍铁水, 铁水预处理, 不锈钢

Abstract: Rational utilization of low-grade nickel oxide ore（known as laterite nickel ore） is an important way to make up for shortage of nickel in the stainless steel industry of our country. The new technology on the primary smelting of 300 series stainless steel was presented，which used the hot metal containing Ni as raw material and after pretreatment by converter，instead of traditional process of “ferro nickel ingot + EAF”，and then provided stainless steel liquid to AOD，completing the refining process of stainless steel. The technology has been applied in a domestic stainless steel factory and the production data indicated that：the semi steel of pretreatment converter endpoint average carbon is 2.5%；average silicon is 0.27%，desiliconization rate is about 84.3%；average phosphorus is 0.028%，dephosphorization rate is about 61.5%. The chemical composition of SUS304 product produced by the new process，completely meet the requirements of GB/T20878—2007，and the cost of production is reduced greatly.

Key words: laterite nickel ore, hot metal containing Ni, hot metal pretreatment, stainless steel

樊君石红勇冀中年王艳彪张慧. 红土矿镍铁水直接冶炼不锈钢工艺[J]. , 2015, 31(5): 56-60.

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