摘要
某厂利用现有的RKEF生产线,通过选择合适的硫酸盐硫化剂,生产得到镍锍的镍品位可控制为16%~24%,硫含量为15%~30%。生产中金属镍的回收率可达85%左右,全流程硫化剂硫的有效利用率为76%左右。另外,红土镍矿还原硫化冶炼镍锍的操作温度明显低于冶炼镍铁的操作温度,炉渣冶炼温度可控制在1480℃~1520℃左右,排锍温度可控制在1330℃~1380℃,生产过程中存在炉渣中有价金属含量增高的趋势,主要由红土矿原料成分变化导致炉渣渣型改变和操作温度降低渣锍分离恶化导致。
A factory utilizes existing RKEF production equipment to produce nickel matte with a controlled grade of 16%~24%and sulfur content of 15%~30%by adding suitable sulfate vulcanizing agents in the rotary kiln.The recovery rate of nickel metal in production can reach about 85%,and the effective utilization rate of sulfurizing agent sulfur is about 76%.In addition,The operating temperature for the reduction and sulfide smelting of nickel matte from laterite nickel ore is significantly lower than that for the smelting of nickel iron.The smelting temperature of slag can be controlled at around 1480℃~1520℃,and the matte discharge temperature can be controlled at 1330℃~1380℃.During the production process,there is a trend of increasing valuable metal content in slag,mainly due to changes in the composition of laterite raw materials leading to changes in slag type and deterioration of slag matte separation caused by a decrease in operating temperature.
作者
王生普
WANG Sheng-pu(Minmetals Nonferrous Metals Co.,Limited,Beijing 100044,China)
出处
《世界有色金属》
2026年第4期10-12,共3页
World Nonferrous Metals
关键词
红土矿
镍铁
低镍锍
RKEF工艺
Laterite
Ferronickel
Low nickel matte
RKEF process
