红土镍矿火法冶炼工艺现状及进展

Status and Progress in Pyrometallurgy Processes of a Laterite Nickel Ore

随着硫化镍矿资源的日趋枯竭,高效利用红土镍矿以满足不断增长的镍需求具有重要的现实意义。本文阐述了还原硫化熔炼镍锍工艺、回转窑-电炉冶炼镍铁工艺以及还原焙烧-磁选工艺等主要红土镍矿火法冶炼工艺的现状,并分析了这些工艺的优缺点,介绍了红土镍矿综合利用的研究进展,认为转底炉直接还原-熔分炉冶炼工艺具有发展前景,为高效利用红土镍矿资源提供参考。

With the depletion of nickel sulphide ore resources,it is of immediate significance for efficient utilization of laterite nickel ore to meet the growing demand for nickel.Status of pyrometallurgy processes,including reduction-sulfuration smelting nickel matte process,rotary kiln dry-electric furnace reduction smelting ferronickel process,and reduction roasting magnetic separation process,was summarized in this paper,and the advantages and disadvantages of these processes were compared.Research progress on comprehensive utilization of laterite nickel ore was introduced.It is believed that the rotary hearth furnace reduction-melting furnace smelting process has a bright future.These analyses provide reference for the efficient utilization of laterite nickel ore resources.