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Acid Leaching Process of Laterite Nickel Ore with High Iron Content and Low Grade
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Jiawen GUO1, 2, 3, 4, Jinzhong CHEN1, 2, 3, Jifu FENG4
Hydrometallurgy of China | 2024, 43(1) : 20 - 28
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Hydrometallurgy of China | 2024, 43(1): 20-28
• Experiment Research •
Acid Leaching Process of Laterite Nickel Ore with High Iron Content and Low Grade
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Jiawen GUO1, 2, 3, 4, Jinzhong CHEN1, 2, 3, Jifu FENG4
Affiliations
  • 1 College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
  • 2 Key Laboratory of New Technology for Non Ferrous Metals and Materials Processing, Guilin University of Technology, Guilin 541004, China
  • 3 Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, China
  • 4 China Nonferrous Guilin Institute of Mineral Geology Co., Ltd., Guilin 541004, China
Published: 2024-02-20 doi: 10.13355/j.cnki.sfyj.2024.01.004
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The change of iron grade in the leaching residue and the leaching kinetics under normal pressure and pressure were examined. The pressure leaching of nickel and cobalt from a high iron and low grade laterite nickel ore in Indonesia with sulfuric acid was studied. The results show that under the conditions of acid/ore ratio of 260 kg/t, leaching temperature of 250 ℃ (corresponding to water vapor pressure of 4.0 MPa), liquid volume/solid mass ratio of 3/1, stirring speed of 300 r/min, particle size of 100 mesh and reaction time of 1 h, the leaching rates of nickel, cobalt and iron are 98.1%, 98.3% and 4.7%, respectively, and the iron grade can reach 51.3%. The leaching processes of nickel and cobalt under pressure and atmospheric pressure are in line with the shrinkage kernel model of interfacial chemical reaction control, and the activation energies of the reactions are 116 kJ/mol and 91 kJ/mol under pressure, respectively, and the activation energies of the reaction under atmospheric pressure are 41 kJ/mol and 53 kJ/mol, respectively. The leaching is mainly goethite under normal pressure, and chromite, magnetite and other mineral phases under high pressure.

laterite nickel ore  /  high iron content  /  low grade  /  nickel  /  cobalt  /  acid leaching  /  dynamics
Jiawen GUO, Jinzhong CHEN, Jifu FENG. Acid Leaching Process of Laterite Nickel Ore with High Iron Content and Low Grade[J]. Hydrometallurgy of China, 2024 , 43 (1) : 20 -28 . DOI: 10.13355/j.cnki.sfyj.2024.01.004
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Year 2024 volume 43 Issue 1
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doi: 10.13355/j.cnki.sfyj.2024.01.004
  • Receive Date：2023-09-22
  • Online Date：2025-09-10
  • Published：2024-02-20
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  • Received：2023-09-22
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Affiliations
    1 College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
    2 Key Laboratory of New Technology for Non Ferrous Metals and Materials Processing, Guilin University of Technology, Guilin 541004, China
    3 Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004, China
    4 China Nonferrous Guilin Institute of Mineral Geology Co., Ltd., Guilin 541004, 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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