Innovative method for boron extraction from iron ore containing boron

Guang Wang, Jing-song Wang, Xin-yun Yu, Ying-feng Shen, Hai-bin Zuo, Qing-guo Xue

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    Guang Wang, Jing-song Wang, Xin-yun Yu, Ying-feng Shen, Hai-bin Zuo, and Qing-guo Xue, Innovative method for boron extraction from iron ore containing boron, Int. J. Miner. Metall. Mater., 23(2016), No. 3, pp.247-256. https://dx.doi.org/10.1007/s12613-016-1233-0
    Guang Wang, Jing-song Wang, Xin-yun Yu, Ying-feng Shen, Hai-bin Zuo, and Qing-guo Xue, Innovative method for boron extraction from iron ore containing boron, Int. J. Miner. Metall. Mater., 23(2016), No. 3, pp.247-256. https://dx.doi.org/10.1007/s12613-016-1233-0
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    Innovative method for boron extraction from iron ore containing boron

    • State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    基金项目: 

    This work was financially supported by the National Natural Science Foundation of China (No. 51274033).

      通信作者:

      Hai-bin Zuo E-mail: zuohaibin@ustb.edu.cn

    中文摘要

    A novel process for boron enrichment and extraction from ludwigite based on iron nugget technology was proposed. The key steps of this novel process, which include boron and iron separation, crystallization of boron-rich slag, and elucidation of the boron extraction behavior of boron-rich slag by acid leaching, were performed at the laboratory. The results indicated that 95.7% of the total boron could be enriched into the slag phase, thereby forming a boron-rich slag during the iron and slag melting separation process. Suanite and kotoite were observed to be the boron-containing crystalline phases, and the boron extraction properties of the boron-rich slag depended on the amounts and grain sizes of these minerals. When the boron-rich slag was slowly cooled to 1100℃, the slag crystallized well and the efficiency of extraction of boron (EEB) of the slag was the highest observed in the present study. The boron extraction property of the slow-cooled boron-rich slag obtained in this study was much better than that of szaibelyite ore under the conditions of 80% of theoretical sulfuric acid amount, leaching time of 30 min, leaching temperature of 40℃, and liquid-to-solid ratio of 8 mL/g.

     

    Innovative method for boron extraction from iron ore containing boron

    Author Affilications

      • State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    • Funds: 

      This work was financially supported by the National Natural Science Foundation of China (No. 51274033).

    • Received: 18 May 2015; Revised: 18 July 2015; Accepted: 26 July 2015;
    A novel process for boron enrichment and extraction from ludwigite based on iron nugget technology was proposed. The key steps of this novel process, which include boron and iron separation, crystallization of boron-rich slag, and elucidation of the boron extraction behavior of boron-rich slag by acid leaching, were performed at the laboratory. The results indicated that 95.7% of the total boron could be enriched into the slag phase, thereby forming a boron-rich slag during the iron and slag melting separation process. Suanite and kotoite were observed to be the boron-containing crystalline phases, and the boron extraction properties of the boron-rich slag depended on the amounts and grain sizes of these minerals. When the boron-rich slag was slowly cooled to 1100℃, the slag crystallized well and the efficiency of extraction of boron (EEB) of the slag was the highest observed in the present study. The boron extraction property of the slow-cooled boron-rich slag obtained in this study was much better than that of szaibelyite ore under the conditions of 80% of theoretical sulfuric acid amount, leaching time of 30 min, leaching temperature of 40℃, and liquid-to-solid ratio of 8 mL/g.

     

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