Ferronickel enrichment by fine particle reduction and magnetic separation from nickel laterite ore

Xiao-hui Tang, Run-zao Liu, Li Yao, Zhi-jun Ji, Yan-ting Zhang, Shi-qi Li

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    Xiao-hui Tang, Run-zao Liu, Li Yao, Zhi-jun Ji, Yan-ting Zhang, and Shi-qi Li, Ferronickel enrichment by fine particle reduction and magnetic separation from nickel laterite ore, Int. J. Miner. Metall. Mater., 21(2014), No. 10, pp.955-961. https://dx.doi.org/10.1007/s12613-014-0995-5
    Xiao-hui Tang, Run-zao Liu, Li Yao, Zhi-jun Ji, Yan-ting Zhang, and Shi-qi Li, Ferronickel enrichment by fine particle reduction and magnetic separation from nickel laterite ore, Int. J. Miner. Metall. Mater., 21(2014), No. 10, pp.955-961. https://dx.doi.org/10.1007/s12613-014-0995-5
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    Ferronickel enrichment by fine particle reduction and magnetic separation from nickel laterite ore

    • School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing, 100083, China

    • Tangshan Branch, Hebei Iron and Steel Co. Ltd., Tangshan, 063020, China

    • Tianjin Pipe Group Co. Ltd., Tianjin, 300301, China

    基金项目: 

    The authors are grateful for the support by Tangshan Iron & Steel Co. Ltd., China.

      通信作者:

      Run-zao Liu E-mail: liurunzao@metall.ustb.edu.cn

    中文摘要

    Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as reductants at different temperatures (700–1000°C). Magnetic separation of the reduced products was conducted using a SLon-100 cycle pulsating magnetic separator (1.2 T). Composition analysis indicates that the nickel laterite ore contains a total iron content of 22.50wt% and a total nickel content of 1.91wt%. Its mineral composition mainly consists of serpentine, hortonolite, and goethite. During the reduction process, the grade of nickel and iron in the products increases with increasing reduction temperature. Although a higher temperature is more favorable for reduction, the temperature exceeding 1000°C results in sintering of the products, preventing magnetic separation. After magnetic separation, the maximum total nickel and iron concentrations are 5.43wt% and 56.86wt%, and the corresponding recovery rates are 84.38% and 53.76%, respectively.

     

    Ferronickel enrichment by fine particle reduction and magnetic separation from nickel laterite ore

    Author Affilications

      • School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing, 100083, China

      • Tangshan Branch, Hebei Iron and Steel Co. Ltd., Tangshan, 063020, China

      • Tianjin Pipe Group Co. Ltd., Tianjin, 300301, China

    • Funds: 

      The authors are grateful for the support by Tangshan Iron & Steel Co. Ltd., China.

    • Received: 27 March 2014; Revised: 13 May 2014; Accepted: 19 May 2014;
    Ferronickel enrichment and extraction from nickel laterite ore were studied through reduction and magnetic separation. Reduction experiments were performed using hydrogen and carbon monoxide as reductants at different temperatures (700–1000°C). Magnetic separation of the reduced products was conducted using a SLon-100 cycle pulsating magnetic separator (1.2 T). Composition analysis indicates that the nickel laterite ore contains a total iron content of 22.50wt% and a total nickel content of 1.91wt%. Its mineral composition mainly consists of serpentine, hortonolite, and goethite. During the reduction process, the grade of nickel and iron in the products increases with increasing reduction temperature. Although a higher temperature is more favorable for reduction, the temperature exceeding 1000°C results in sintering of the products, preventing magnetic separation. After magnetic separation, the maximum total nickel and iron concentrations are 5.43wt% and 56.86wt%, and the corresponding recovery rates are 84.38% and 53.76%, respectively.

     

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