Direct atmospheric leaching of saprolitic nickel laterite ores with sulphuric acid

被引：0
|
作者：
Curlook, W [1 ]
机构：
[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada
来源：
INTERNATIONAL LATERITE NICKEL SYMPOSIUM-2004 | 2004年
关键词：
atmospheric leaching; nickel oxide ores; laterites;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An atmospheric acid leaching process for leaching nickel and cobalt from highly-serpentinized saprolitic fractions of nickel laterite deposits has been developed and patented [1]. The process involves leaching the highly-serpentinized saprolitic portion of the nickel laterite ore profile in strong sulphuric acid solutions at atmospheric pressure and temperatures between 80degreesC and 100degreesC, essentially autogenously, to extract over 85% of its contained nickel content and a large proportion of its cobalt content after leaching times of about one hour. The amount of sulphuric acid used in the leaching process is between 80% and 100% by weight of the finely ground highly-serpentinized saprolite ore on a dry weight basis. The metal values are recovered as intermediate products.
引用
收藏
页码：385 / 398
页数：14
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