ABSTRACT This paper describes a detailed study of the segregation process in which nickel, cobalt and iron were extracted as volatile metal chlorides from a nontronite laterite, and concentrated as alloy onto carbon within a single step. Topics covered include: metal recovery, ferronickel grade, extraction kinetics, gaseous reduction of iron oxides, evolved gas volume and composition, carbon utilisation and recycling of hydrogen and chloride. Unique experimental aspects include continuous measurement of oxygen pressure, evolved carbonaceous gas and HCl. Nickel, cobalt and iron recoveries up to 79%, 40% and 6.4% respectively were achieved using coke under standardised rather than optimised conditions. Process fundamentals and maximisation of metal recovery are discussed.

中文翻译：

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使用分离工艺从非脱土红土中回收镍、钴和铁的基本方面

摘要 本文详细介绍了偏析过程，在该过程中，镍、钴和铁作为挥发性金属氯化物从非脱土红土中提取，并在一个步骤中作为合金浓缩到碳上。涵盖的主题包括：金属回收、镍铁品位、提取动力学、氧化铁的气态还原、释放的气体体积和成分、碳利用以及氢气和氯化物的回收。独特的实验方面包括连续测量氧气压力、释放的含碳气体和 HCl。在标准化而非优化条件下使用焦炭可分别实现高达 79%、40% 和 6.4% 的镍、钴和铁回收率。讨论了工艺基础和金属回收的最大化。