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Selective Precipitation of Cobalt by Activated Magnesium Oxide
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Can LUO1, Xiaoli TIAN2, Jia WANG2, Zhixun LI2, Baikuan LIU1, 2
Hydrometallurgy of China | 2024, 43(3) : 302 - 308
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Hydrometallurgy of China | 2024, 43(3): 302-308
• Experiment Research •
Selective Precipitation of Cobalt by Activated Magnesium Oxide
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Can LUO1, Xiaoli TIAN2, Jia WANG2, Zhixun LI2, Baikuan LIU1, 2
Affiliations
  • 1 School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710000, China
  • 2 Puyang Refractories Group Co., Ltd., Puyang 457000, China
Published: 2024-06-20 doi: 10.13355/j.cnki.sfyj.2024.03.012
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In the process of cobalt extraction from Congo (Kinshasa) copper-cobalt polymetallic symbiotic ore, active magnesium oxide was selected to precipitate cobalt in cobalt containing solution and to prepare crude cobalt hydroxide. The kinetics of hydroxide precipitation in solution was discussed. The effects of particle size of magnesium oxide, the amount and method of adding magnesium oxide, reaction time and temperature on precipitation of iron, cobalt and manganese were investigated. The results show that the impurity iron in the simulated cobalt solution can be quickly removed by adding 30% hydrogen peroxide. Active magnesium oxide with particle size less than 45 μm is added to the simulated cobalt containing solution according to the addition amount of 0.68/1 and multiple additions by reaction at room temperature for 6 h, and the obtained primary precipitation can meet the requirements of industry standards for gradeⅠ and secondary precipitation can meet the requirements of gradeⅢ. The process has the advantages of low cost and high practicability, and can effectively improve the efficiency of magnesium oxide cobalt deposition.

magnesium oxide  /  cobalt  /  manganese  /  iron  /  selective precipitation  /  extraction  /  kinetics
Can LUO, Xiaoli TIAN, Jia WANG, Zhixun LI, Baikuan LIU. Selective Precipitation of Cobalt by Activated Magnesium Oxide[J]. Hydrometallurgy of China, 2024 , 43 (3) : 302 -308 . DOI: 10.13355/j.cnki.sfyj.2024.03.012
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Year 2024 volume 43 Issue 3
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doi: 10.13355/j.cnki.sfyj.2024.03.012
  • Receive Date：2023-12-11
  • Online Date：2025-09-10
  • Published：2024-06-20
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  • Received：2023-12-11
Affiliations
    1 School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710000, China
    2 Puyang Refractories Group Co., Ltd., Puyang 457000, 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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