Pressure acid leaching of arid-region nickel laterite ore Part IV: Effect of acid loading and additives with nontronite ores

被引：19
作者：
Johnson, JA [1 ]
McDonald, RG [1 ]
Muir, DM [1 ]
Tranne, JP [1 ]
机构：
[1] CSIRO Minerals, AJ Parker CRC Hydromet, Bentley, WA 6982, Australia
来源：
HYDROMETALLURGY | 2005年 / 78卷 / 3-4期
关键词：
nickel laterite; pressure acid leaching; nontronite; acid loading; salinity;
D O I：
10.1016/j.hydromet.2005.04.002
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The extraction of nickel from nontronite-rich laterite ores is enhanced by either increasing the acid loading, or the addition of a small amount of sodium to the process water. The results of this study indicate that at least 15% less acid can be used to get the same extraction of nickel from a nontronite-rich laterite ore in process water containing 5 g/L sodium ion, compared with the same ore in fresh process water. In addition, nickel extractions from a second nontronite-rich laterite ore were increased by up to 3% compared with fresh water, if process water sodium ion levels is present at 5-11 g/L at a given acid loading of 420 kg/t ore. Crown Copyright (c) 2005 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：264 / 270
页数：7
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