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Thermodynamic Analysis and Processing Technology for Producing Medium-Grade Nickel Matte by Sulfidation Smelting of Copper-Nickel Electroplating Sludge
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Zhaoan ZHOU1, 2, Xiaowen LIU1, 2, Jun LI1, 2, Anzhang MAO1, 2, Jiaxing LI1, 2
Mining and Metallurgical Engineering | 2025, 45(2) : 141 - 146
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Mining and Metallurgical Engineering | 2025, 45(2): 141-146
• METALLURGY •
Thermodynamic Analysis and Processing Technology for Producing Medium-Grade Nickel Matte by Sulfidation Smelting of Copper-Nickel Electroplating Sludge
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Zhaoan ZHOU1, 2, Xiaowen LIU1, 2, Jun LI1, 2, Anzhang MAO1, 2, Jiaxing LI1, 2
Affiliations
  • 1.Guangdong Feinan Resources Recycling Co., Ltd., Zhaoqing 526233, Guangdong, China
  • 2.Engineering Technology Research Center for Comprehensive Utilization of Copper-Bearing Industrial Solid Waste Sludge in Guangdong Province, Zhaoqing 526233, Guangdong, China
Published: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.025
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A thermodynamic analysis based on HSC Chemistry software reveals the phase evolution of main metals in the production of nickel matte by sulfidation smelting of copper-nickel electroplating sludge, and the optimal process conditions for obtaining medium-grade nickel matte by sulfidation smelting were also analyzed. Theoretical calculation shows that the electroplating sludge with grades of Cu and Ni at 3.0% and 3.5% respectively is smelted at a temperature of 1 300 ℃, with calcium sulfate as a sulfurizing reagent under a smelting atmosphere with in a volume ratio of 60%-75%, and the actual usage of sulfur 1.6-2.0 times the theoretical value. It is expected that medium-grade nickel matte with Fe content less than 20% can be obtained, and the contents of Cu and Ni in the slag with S ratio in the preferred range can be less than 0.20% and 0.43% respectively. It is shown that recovery rates of Cu and Ni exceed 95% and 90% respectively, and the fixation rate of Cr in the slag is over 99.9%. According to the statistical results of production samples, the distribution behavior of Cu, Ni and Cr is basically consistent with the thermodynamic analysis results. This proves that the established mathematical model has good reliability and is of certain guiding significance for production.

copper and nickel  /  electroplating sludge  /  sulfidation smelting  /  medium-grade nickel matte  /  thermodynamic analysis  /  hazardous waste utilization
Zhaoan ZHOU, Xiaowen LIU, Jun LI, Anzhang MAO, Jiaxing LI. Thermodynamic Analysis and Processing Technology for Producing Medium-Grade Nickel Matte by Sulfidation Smelting of Copper-Nickel Electroplating Sludge[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 141 -146 . DOI: 10.3969/j.issn.0253-6099.2025.02.025
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Year 2025 volume 45 Issue 2
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doi: 10.3969/j.issn.0253-6099.2025.02.025
  • Receive Date：2024-09-30
  • Online Date：2026-03-19
  • Published：2025-04-01
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  • Received：2024-09-30
Affiliations
    1.Guangdong Feinan Resources Recycling Co., Ltd., Zhaoqing 526233, Guangdong, China
    2.Engineering Technology Research Center for Comprehensive Utilization of Copper-Bearing Industrial Solid Waste Sludge in Guangdong Province, Zhaoqing 526233, Guangdong, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.02.025
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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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