Abstract—Based on the process of selective nickel and cobalt recovery developed at the Baikov Institute of Metallurgy and Materials Science, we study the influence of the temperature of reduction roasting of the Buruktal oxidized nickel ore (ONO) on the technological parameters of sulfuric acid leaching of a cinder. The phase compositions of the cinders that form during reduction roasting in hydrogen and carbon dioxide atmosphere upon gradual heating of the ore from 400 to 750–850°C are studied, and the dependence of the degree of nickel and cobalt recovery on the reduction roasting temperature during sulfuric acid leaching of a cinder in pH media is determined. Under the optimum roasting and leaching conditions, the nickel recovery is found to be 99% and the cobalt recovery, 83%.

摘要—基于拜科夫冶金与材料科学研究所开发的镍钴选择性回收工艺，研究了Buruktal氧化镍矿（ONO）还原焙烧温度对硫酸浸出工艺参数的影响。的煤渣。研究了在氢气和二氧化碳气氛中将矿石从 400 逐渐加热到 750–850°C 时在还原焙烧过程中形成的煤渣的相组成，以及镍和钴回收率对还原焙烧温度的依赖性测定在 pH 介质中硫酸浸出煤渣的过程中。在最佳焙烧和浸出条件下，镍回收率为 99%，钴回收率为 83%。