Ultrasonic-assisted Oxidation Leaching of Nickel Sulfide Concentrate

薛娟琴; 卢曦; 杜业威; 毛维博; 王玉洁; 李京仙

doi:10.1016/S1004-9541(09)60152-X

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Ultrasonic-assisted Oxidation Leaching of Nickel Sulfide Concentrate

Updated：2026-01-06

- Ultrasonic-assisted Oxidation Leaching of Nickel Sulfide Concentrate
- Chinese Journal of Chemical Engineering Vol. 18, Issue 6, Pages: 948-953(2010)
- Affiliations：
  
  School of Metallurgical Engineering, Xi’an University of Architecture and Technology,Xi’an,China,710055
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(09)60152-X
  CLC：
- Published：2010
- Accepted：
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XUE Juanqin, LU Xi, DU Yewei, MAO Weibo, WANG Yujie, LI Jingxian. Ultrasonic-assisted Oxidation Leaching of Nickel Sulfide Concentrate[J]. , 2010, 18(6): 948-953.
DOI：

XUE Juanqin, LU Xi, DU Yewei, MAO Weibo, WANG Yujie, LI Jingxian. Ultrasonic-assisted Oxidation Leaching of Nickel Sulfide Concentrate[J]. , 2010, 18(6): 948-953. DOI： 10.1016/S1004-9541(09)60152-X.

摘要

Abstract

The feasibility of oxidation leaching process of nickel from nickel sulfide ore and the form of different components in the lixivium has been studied at first. The method of leaching nickel sulfide concentration directly by oxidants with existence of ultrasonic has been advanced. The process of leaching nickel from nickel sulfide concentration by using the system of persulfate and silver has been determined. The influence of different factors on the leaching rates of nickel

such as with and without ultrasonic

the concentration of Na

liquid-solid ratio and the concentration of AgNO

have been explored. The results show that:(1) in the oxidative leaching system

nickel can be leached completely as Ni

or NiSO

(aq.) from nickel sulfide concentration in theory;(2) the nicopyrite can not exist steadily in the persulfate acid leaching system

but Ni2+can. Meanwhile

sulfur may be existed steadily in the leaching process;(3) nicopyrite with much lower electrostatic potential may be leached earlier than chalcopyrite and sideropyrite;and(4) the overall reaction rate of the leaching process can be enhanced with ultrasonic radiation

but it does not change the mechanism of leaching. The more oxidant concentration or higher liquid-solid ratio is

the higher leaching percentage of nickel. The leaching percentage of nickel can be increased significantly by adding a small amount of AgNO

during the leaching processes. Under the same conditions

the high

er concentration of AgNO

the higher leaching yields of nickel will be obtained.

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