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Research Progress and Prospects in Enrichment and Extraction Technologies of Titanium Resources from Coal Gangue
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Suwan QIAN1, Deshun KONG1, 2, Yuan GAO3, Nannan JI1
Hydrometallurgy of China | 2026, 45(4) : 476 - 483
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Hydrometallurgy of China | 2026, 45(4): 476-483
• Reviews •
Research Progress and Prospects in Enrichment and Extraction Technologies of Titanium Resources from Coal Gangue
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Suwan QIAN1, Deshun KONG1, 2, Yuan GAO3, Nannan JI1
Affiliations
  • 1.School of Environment and Chemical Engineering, Dalian University, Dalian　116622, China
  • 2.School of Chemical and Materials Engineering, Liupanshui Normal University, Liupanshui　553004, China
  • 3.School of Chemical Engineering, China University of Mining and Technology, Xuzhou　221116, China
Published: 2026-08-20 doi: 10.13355/j.cnki.sfyj.2026.04.003
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Recovery of titanium from coal gangue is significant for both high-value utilization of solid waste and resource security. This review systematically examines the occurrence of titanium in coal gangue and its influence on enrichment and extraction processes. It focuses on the applicable conditions and technical bottlenecks of mainstream hydrometallurgical techniques, such as acid leaching, alkali fusion, and roasting-leaching. Comparisons are made with physical sorting and emerging green technologies, including bioleaching and ionic liquid extraction. Future research directions are also discussed, aiming to provide a reference for the economical, environmentally friendly, and efficient recovery of titanium resources from coal gangue.

coal gangue  /  titanium  /  extraction  /  enrichment  /  hydrometallurgy  /  occurrence state  /  research progress  /  prospect
Suwan QIAN, Deshun KONG, Yuan GAO, Nannan JI. Research Progress and Prospects in Enrichment and Extraction Technologies of Titanium Resources from Coal Gangue[J]. Hydrometallurgy of China, 2026 , 45 (4) : 476 -483 . DOI: 10.13355/j.cnki.sfyj.2026.04.003
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Year 2026 volume 45 Issue 4
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Article Info
doi: 10.13355/j.cnki.sfyj.2026.04.003
  • Receive Date：2025-11-18
  • Online Date：2026-09-11
  • Published：2026-08-20
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  • Received：2025-11-18
  • Revised：2025-12-05
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Affiliations
    1.School of Environment and Chemical Engineering, Dalian University, Dalian　116622, China
    2.School of Chemical and Materials Engineering, Liupanshui Normal University, Liupanshui　553004, China
    3.School of Chemical Engineering, China University of Mining and Technology, Xuzhou　221116, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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