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Metal Mine ›› 2025, Vol. 54 ›› Issue (10): 83-89.

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Study on Process Mineralogical Characterization of Manganese Ores in Akto-Wucha Area,Xinjiang

LI Ru1,2,3　YUAN Shuai1,2,3　LIU Jie1,2,3　ZHANG Honghao1,2,3　MA Xiaolei4　WAN Lingyun5   

  1. 1. National Key Laboratory of Mineral Processing Science and Technology,Shenyang 110819,China;2. School of Resources and Civil
    Engineering,Northeastern University,Shenyang 110819,China;3. National-local Joint Engineering Research Center of High-efficient
    Exploitation Technology for Refractory Iron Ore Resources,Shenyang 110819,China;4. Akto Kebang Manganese Manufacturing
    Co. ,Ltd. ,Akto 845550,China;5. Xinjiang Nonferrous Metals Research Institute Co. ,Ltd. ,Urumqi 830000,China
  • Online:2025-10-15 Published:2025-11-06

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Abstract: In order to support the efficient utilization of high-grade manganese resources in the Aketao area of Xinjiang,
a systematic process mineralogical study was carried out on rhodochrosite ore using chemical analysis,optical microscopy,scanning
electron microscopy-energy dispersive spectroscopy (SEM-EDS),X-ray diffraction (XRD),and mineral liberation analysis
(MLA). The results indicated a manganese grade of 29. 82% in the ore,with rhodochrosite as the predominant manganese
mineral (55. 19%),followed by manganese pyroxene,manganite,and braunite. The main gangue minerals are chlorite and calcite.
Process mineralogy further revealed a low degree of liberation of rhodochrosite (33. 02%),which is intimately associated
with gangue minerals such as chlorite and calcite. The easy argillization and surface-coating behavior of chlorite also complicate
conventional physical separation. This study provides a critical theoretical basis for designing beneficiation processes for this refractory
manganese ore,and recommends a combined magnetic-flotation process with targeted reagent schemes to improve manganese
recovery and effectively remove calcium and magnesium impurities.

Key words: rhodochrosite,process mineralogy,mineral liberation analyzer (MLA),dissemination characteristics

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