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Volume 24 Issue 5
May  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(5): 512-522
Yong-qiang Chen, Hong-liang Zhao, and Cheng-yan Wang, Two-stage reduction for the preparation of ferronickel alloy from nickel laterite ore with low Co and high MgO contents, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 512-522. https://doi.org/10.1007/s12613-017-1432-3
Cite this article as:
Yong-qiang Chen, Hong-liang Zhao, and Cheng-yan Wang, Two-stage reduction for the preparation of ferronickel alloy from nickel laterite ore with low Co and high MgO contents, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 512-522. https://doi.org/10.1007/s12613-017-1432-3
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研究论文Open Access

Two-stage reduction for the preparation of ferronickel alloy from nickel laterite ore with low Co and high MgO contents

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

  • Key Lab of Rare & Precious Metals Green Recycling and Extraction, Beijing 100083, China

  • 通讯作者:

    Cheng-yan Wang    E-mail: chywang@yeah.net

  • The preparation of ferronickel alloy from the nickel laterite ore with low Co and high MgO contents was studied by using a pre-reduction-smelting method. The effects of reduction time, calcination temperature, quantity of reductant and calcium oxide (CaO), and pellet diameter on the reduction ratio of Fe and on the pellet strength were investigated. The results show that, for a roasting temperature >800℃, a roasting time >30 min, 1.5wt% added anthracite coal, 5wt% added CaO, and a pellet size of~10 mm, the reduction ratio of Fe exceeds 70% and the compressive strength of the pellets exceeds 10 kg per pellet. Reduction smelting experiments were performed by varying the smelting time, temperature, quantity of reductant and CaO, and reduction ratio of Fe in the pellets. Optimal conditions for the reduction smelting process are as follows:smelting time, 30-45 min; smelting temperature, 1550℃; quantity of reductant, 4wt%-5wt%; and quantity of CaO, 5wt%; leading to an Fe reduction ratio of 75% in the pellets. In addition, the mineral composition of the raw ore and that during the reduction process were investigated by process mineralogy.
    • Research ArticleOpen Access

    Two-stage reduction for the preparation of ferronickel alloy from nickel laterite ore with low Co and high MgO contents

    + Author Affiliations
      Abstract
    • The preparation of ferronickel alloy from the nickel laterite ore with low Co and high MgO contents was studied by using a pre-reduction-smelting method. The effects of reduction time, calcination temperature, quantity of reductant and calcium oxide (CaO), and pellet diameter on the reduction ratio of Fe and on the pellet strength were investigated. The results show that, for a roasting temperature >800℃, a roasting time >30 min, 1.5wt% added anthracite coal, 5wt% added CaO, and a pellet size of~10 mm, the reduction ratio of Fe exceeds 70% and the compressive strength of the pellets exceeds 10 kg per pellet. Reduction smelting experiments were performed by varying the smelting time, temperature, quantity of reductant and CaO, and reduction ratio of Fe in the pellets. Optimal conditions for the reduction smelting process are as follows:smelting time, 30-45 min; smelting temperature, 1550℃; quantity of reductant, 4wt%-5wt%; and quantity of CaO, 5wt%; leading to an Fe reduction ratio of 75% in the pellets. In addition, the mineral composition of the raw ore and that during the reduction process were investigated by process mineralogy.
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      • References(20)
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