CIESC Journal ›› 2023, Vol. 74 ›› Issue (7): 2783-2799.DOI: 10.11949/0438-1157.20230260

• Reviews and monographs • Previous Articles     Next Articles

Research progress on activation extraction of valuable metals in coal gangue

Chao KANG1,2(), Jinpeng QIAO1,2(), Shengchao YANG1,2, Chao PENG1,2, Yuanpeng FU3, Bin LIU4, Jianrong LIU5, Aleksandrova TATIANA6, Chenlong DUAN1,2()   

  1. 1.School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
    2.Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
    3.College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
    4.Hunan Provincial Communications Planning, Survey & Design Institute Co. , Ltd. , Changsha 410200, Hunan, China
    5.Inner Mongolia Shanghai Miao Mining Co. , Ltd. , Etuokeqianqi 021600, Inner Mongolia, China
    6.Mineral Processing Department, Saint Petersburg Mining University, St. Petersburg 199106, Russia
  • Received:2023-03-20 Revised:2023-06-15 Online:2023-08-31 Published:2023-07-05
  • Contact: Jinpeng QIAO, Chenlong DUAN

煤矸石中有价关键金属活化提取研究进展

康超1,2(), 乔金鹏1,2(), 杨胜超1,2, 彭超1,2, 付元鹏3, 刘斌4, 刘建荣5, Aleksandrova Tatiana6, 段晨龙1,2()   

  1. 1.中国矿业大学化工学院,江苏 徐州 221116
    2.中国矿业大学煤炭加工与高效洁净利用教育部重点实验室,江苏 徐州 221116
    3.太原理工大学矿业工程学院,山西 太原 030024
    4.湖南省交通规划勘察设计院有限公司,湖南 长沙 410200
    5.内蒙古上海庙矿业有限责任公司,内蒙古 鄂托克前旗 021600
    6.圣彼得堡矿业大学矿物加工系,俄罗斯 圣彼得堡 199106
  • 通讯作者: 乔金鹏,段晨龙
  • 作者简介:康超(1999—),男,硕士研究生,3310637329@qq.com
  • 基金资助:
    国家自然科学基金项目(52204294);江苏省自然科学基金项目(BK20221131);内蒙古中央引导地方科技发展资金项目(2022ZY0051);内蒙古自治区科技兴蒙项目(2021EEDSCXSFQZD007)

Abstract:

Coal gangue is a solid waste in the process of coal mining and washing, and it is one of the largest industrial solid wastes in China. Recycling and utilizing potential mineral resources is of great significance to realize the goal of green mine construction and “dual carbon” target in China. Based on the comprehensive analysis of the relevant technology of extracting valuable metals from coal gangue at the present stage at home and abroad, the research progress of efficient enrichment of valuable components such as aluminum and iron by “single/composite activation-alkali fusion/acid leaching” was systematically expounded, and focused on the analysis of the occurrence state and extraction methods of trace key metals such as lithium and rare earth. In view of the complex composition of coal gangue, large fluctuation range, and low content of valuable metals, based on the mineral characteristics, the corresponding mineral processing technology can be used to initially enrich the carrier minerals, improve the grade of valuable metals, and then carry out the synergistic extraction of aluminum, iron, lithium, rare earth, and other elements to realize the high value-added utilization of coal gangue.

Key words: coal gangue, valuable metals, activation, leaching, occurrence state

摘要:

煤矸石是煤炭开采洗选过程中的固体废弃物,是我国产储量最大的工业固废之一,回收利用其中潜在的矿产资源对实现我国绿色矿山建设及“双碳”目标达成意义重大。通过综合分析国内外现阶段煤矸石提取有价金属相关技术,系统阐述了“单一/复合活化-碱熔/酸浸”联合强化铝、铁等有价组分高效富集研究进展,重点分析了锂、稀土等微量关键金属的赋存状态及提取方法。针对煤矸石组分复杂且波动范围大、有价金属含量低等问题,可基于矿物特性采用相应选矿技术初步富集载体矿物,提升有价金属品位,进而开展铝、铁、锂、稀土等多种元素协同提取,实现煤矸石高附加值利用。

关键词: 煤矸石, 有价金属, 活化, 浸出, 赋存状态

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