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Vanadium Extraction from Stone Coal by Blank Roasting and Leaching Process
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Yuncong MA1, Hao LUO2, Yisheng WANG1, Lian WANG1
Mining and Metallurgical Engineering | 2025, 45(6) : 157 - 161
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Mining and Metallurgical Engineering | 2025, 45(6): 157-161
• METALLURGY •
Vanadium Extraction from Stone Coal by Blank Roasting and Leaching Process
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Yuncong MA1, Hao LUO2, Yisheng WANG1, Lian WANG1
Affiliations
  • 1.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
  • 2.Wuhan University, Wuhan 430072, Hubei, China
doi: 10.3969/j.issn.0253-6099.2025.06.028
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A study was conducted on blank roasting and sulfuric acid leaching process for vanadium extraction from vanadium-bearing stone coal. Effects of ore sample particle size, roasting time, roasting temperature, sulfuric acid dosage, leaching time and leaching temperature on the vanadium extraction performance were investigated. Based on the optimized processing conditions, including sample with particle size of-0.15 mm, roasting temperature of 900 ℃, roasting time of 6 h, sulfuric acid dosage of 5%, liquid-solid ratio of 2 mL/g and stirring leaching at room temperature for 3 h, a scale-up verification experiment was conducted with increased ore sample feed. As a result, a vanadium leaching rate was 78.2%, and the main impurities and corresponding contents in the stock solution were found to be as follows:Fe 0.154 g/L, Al 0.578 g/L and Si 0.617 g/L. It is found that blank roasting effectively reduces sulfuric acid consumption and results in low impurity contents in the leaching solution, thus reducing difficulty in subsequent impurity removal process.

vanadium-bearing stone coal  /  acid leaching  /  sulfuric acid leaching  /  roasting  /  blank roasting  /  vanadium pentoxide  /  vanadium extraction
马云聪, 罗豪, 王怡圣, 王炼. 石煤钒矿空白焙烧及酸浸提钒工艺研究. 矿冶工程杂志, 2025 , 45 (6) : 157 -161 . DOI: 10.3969/j.issn.0253-6099.2025.06.028
Yuncong MA, Hao LUO, Yisheng WANG, Lian WANG. Vanadium Extraction from Stone Coal by Blank Roasting and Leaching Process[J]. Mining and Metallurgical Engineering, 2025 , 45 (6) : 157 -161 . DOI: 10.3969/j.issn.0253-6099.2025.06.028
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Year 2025 volume 45 Issue 6
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doi: 10.3969/j.issn.0253-6099.2025.06.028
  • Receive Date：2025-05-15
  • Online Date：2026-10-08
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  • Received：2025-05-15
Affiliations
    1.Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
    2.Wuhan University, Wuhan 430072, Hubei, 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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