Leaching behavior of metals from limonitic laterite ore by high pressure acid leaching

被引：69

作者：

Guo Xue-yi ^{[1
]}

Shi Wen-tang ^{[1
]}

Li Dong ^{[1
]}

Tian Qing-hua ^{[1
]}

机构：

[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2011年 / 21卷 / 01期

关键词：

high pressure acid leaching; limonitic laterite; leaching behavior; nickel; NICKEL LATERITES;

D O I：

10.1016/S1003-6326(11)60698-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The leaching behavior of metals from a nickeliferous limonitic laterite ore was investigated by high pressure acid leaching process for the extraction of nickel and cobalt. The effects of sulfuric acid added, leaching temperature, leaching time and liquid/solid (L/S) ratio on metals extraction were examined. More than 97% Ni, 96% Co, 93% Mn, 95% Mg and less than 1% Fe are extracted under optimum conditions. Analysis of the high pressure acid leaching residue by chemical and XRD analysis indicates that the residual iron and sulfur are mainly present in phases of hematite and alunite, respectively. The high pressure leaching process provides a simple and efficient way for the high recovery of nickel and cobalt from laterite ore, leaving residue as a suitable iron resource.

引用

页码：191 / 195

页数：5

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