High Temperature Chloride assisted Leach Process to Extract Simultaneously Cu, Ni, Au and the PGM's from Various Feedstocks

机译：高温氯化物辅助浸出工艺可从各种原料中同时提取铜，镍，金和铂族金属

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A new process, called PLATSOL~(~R), has been developed to dissolve in one step copper, nickel, gold and the PGM's from low-grade sulphide concentrates. During the investigation of hydrometallurgical techniques to process the NorthMet bulk concentrate (～15 g/t PGM) from the Duluth Gabbro in Minnesota, it was discovered that the addition of small quantities of chloride ions to an otherwise conventional high temperature (>200℃) sulphate medium pressure oxidation process was capable of dissolving in one single leaching step, not only the base metals (Cu, Ni, Co), but also the gold and the PGM's with excellent extractions (90-98%). The PLATSOL~(~R) process was optimised and confirmed for the NorthMet project during a 10-day continuous mini pilot plant trial in July, 2000. Since then, its application has been extended to numerous other PGM sulphide concentrates, copper-gold concentrates, refractory gold-silver concentrates, and also to non-sulphide PGM feedstocks including platinum-containing laterites and autocatalysts. Improvements to the original process have been recently brought upon to further increase recoveries, decrease operating costs and widen the applicability of the process to particular concentrates otherwise refractory.

机译：已经开发出一种名为PLATSOL〜（〜R）的新工艺，该工艺可以一步溶解低级硫化物精矿中的铜，镍，金和PGM。在对位于明尼苏达州德卢斯·加布布罗的NorthMet散装精矿（〜15 g / t PGM）进行湿法冶金技术研究时，发现向常规高温（> 200℃）中添加了少量氯离子。硫酸盐中压氧化工艺能够在一个浸出步骤中溶解，不仅溶解贱金属（铜，镍，钴），而且还溶解金和铂族金属，且提取率极高（90-98％）。在2000年7月进行的为期10天的微型连续小规模试验工厂试验中，对PLATSOL〜（〜R）工艺进行了优化，并为NorthMet项目进行了确认。此后，其应用范围已扩展到许多其他PGM硫化精矿，铜金精矿，耐火金银精矿，以及非硫化物的PGM原料，包括含铂的红土和自催化。最近已经对原始方法进行了改进，以进一步提高回收率，降低操作成本，并扩大了该方法对难处理的特殊浓缩物的适用性。

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《32nd Annual Hydrometallurgy Meeting and International Conference on the Practice and Theory of Chloride/Metal Interaction, Vol.1 Oct 19-23, 2002 Montreal, Quebec, Canada》|2002年|p.11-28|共18页
会议地点 Montreal(CA);Montreal(CA);Montreal(CA)
作者
C.J. Ferron; C.A. Fleming; P.T. OKane; D. Dreisinger;
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Lakefield Research Limited 185 Concession, Lakefield, Ontario, Canada, KOL 2HO;

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原文格式 PDF
正文语种 eng
中图分类冶金工业;
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High Temperature Chloride assisted Leach Process to Extract Simultaneously Cu, Ni, Au and the PGM's from Various Feedstocks

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