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Pressure Leaching of Laterite Nickel Ore by Ferrous Sulfate Oxygen Pressure Leaching
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Xiaoqing ZHENG1, 2, 3, Jiawen GUO1, 2, 3, 4, Jinzhong CHEN1, 2, 3, Weiguang ZHANG1, 2, 3, Xuejiao CAO1, 2, 3, Jifu FENG4, Yibing LI1, 2, 3, Zhonglin LI1, 2, 3
Hydrometallurgy of China | 2025, 44(2) : 180 - 188
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Hydrometallurgy of China | 2025, 44(2): 180-188
• Experiment Research •
Pressure Leaching of Laterite Nickel Ore by Ferrous Sulfate Oxygen Pressure Leaching
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Xiaoqing ZHENG1, 2, 3, Jiawen GUO1, 2, 3, 4, Jinzhong CHEN1, 2, 3, Weiguang ZHANG1, 2, 3, Xuejiao CAO1, 2, 3, Jifu FENG4, Yibing LI1, 2, 3, Zhonglin LI1, 2, 3
Affiliations
  • 1 College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
  • 2 Key Laboratory of New Technology for Nonferrous 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: 2025-04-28 doi: 10.13355/j.cnki.sfyj.2025.02.006
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Aiming at a high iron and low grade laterite nickel ore in Indonesia, the effects of leaching conditions on the leaching of main valuable metals in the raw ore were analyzed, and the change of iron grade in the leaching residue was studied using ferrous sulfate as leaching agent. The results show that under the conditions of oxygen partial pressure of 0.4 MPa, dosage of ferrous sulfate of 280 kg/t, liquid volume to solid mass ratio of 3/1, stirring speed of 300 r/min,raw ore size of 140 ~ 200 μm and temperature of 240 ℃ for 45 min, the leaching rates of nickel and cobalt can reach 98.2% and 98.1%, respectively. The iron average grade of leaching slag can be increased to 55.8%, which is about 10% higher than that of raw ore. In the process of pressure leaching by oxygen, ferrous sulfate can be oxidized and decomposed into sulfuric acid and hematite, which is conducive to further improv the iron grade of the leaching residue.

laterite nickel ore  /  oxygen  /  pressure leaching  /  ferrous sulfate  /  nickel
Xiaoqing ZHENG, Jiawen GUO, Jinzhong CHEN, Weiguang ZHANG, Xuejiao CAO, Jifu FENG, Yibing LI, Zhonglin LI. Pressure Leaching of Laterite Nickel Ore by Ferrous Sulfate Oxygen Pressure Leaching[J]. Hydrometallurgy of China, 2025 , 44 (2) : 180 -188 . DOI: 10.13355/j.cnki.sfyj.2025.02.006
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Year 2025 volume 44 Issue 2
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doi: 10.13355/j.cnki.sfyj.2025.02.006
  • Receive Date：2024-07-17
  • Online Date：2025-08-08
  • Published：2025-04-28
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  • Received：2024-07-17
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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 Nonferrous 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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