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Experimental Study on Resource Utilization of Residue After Vanadium Extraction from Stone-Like Coal by Acid Leaching
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Xinyuan LI, Youcai LIU, Jiangang FU, Zuoqing ZHANG, Huixian DENG, Jingtao BAI
Mining and Metallurgical Engineering | 2025, 45(3) : 110 - 114
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Mining and Metallurgical Engineering | 2025, 45(3): 110-114
• MINERAL PROCESSING •
Experimental Study on Resource Utilization of Residue After Vanadium Extraction from Stone-Like Coal by Acid Leaching
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Xinyuan LI, Youcai LIU, Jiangang FU, Zuoqing ZHANG, Huixian DENG, Jingtao BAI
Affiliations
  • School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
Published: 2025-06-01 doi: 10.3969/j.issn.0253-6099.2025.03.018
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To address issues such as land occupation and environmental hazards caused by stockpiling residues that are left after vanadium extraction from stone-like coal in the Western Hunan, a resource utilization scheme involving deep separation of carbon and ash was proposed. Firstly, coarse-grained minerals with ash content more than 94% were obtained by sieving, and the fine-grained undersize minerals were then subjected to flotation. A closed-circuit flotation test produced a concentrate with fixed carbon content of 32.86% and a higher heating value of 9 832 kJ/kg, which could meet the calorific requirement for the coal added in boilers. The recovery of combustible matter was 73.50%, while the obtained tailings had an ash content of 96.14%, with a yield of 78.42%, and the loss on ignition was 4.98%. The toxicity test confirmed that hazardous components in the high-ash tailings did not exceed limits. Based on preliminary economic estimates, it is concluded that this technical approach is economically feasible.

vanadium extraction from stone-like coal  /  residue  /  flotation  /  resource utilization  /  ash  /  carbon
Xinyuan LI, Youcai LIU, Jiangang FU, Zuoqing ZHANG, Huixian DENG, Jingtao BAI. Experimental Study on Resource Utilization of Residue After Vanadium Extraction from Stone-Like Coal by Acid Leaching[J]. Mining and Metallurgical Engineering, 2025 , 45 (3) : 110 -114 . DOI: 10.3969/j.issn.0253-6099.2025.03.018
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doi: 10.3969/j.issn.0253-6099.2025.03.018
  • Receive Date：2024-12-27
  • Online Date：2026-03-19
  • Published：2025-06-01
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  • Received：2024-12-27
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    School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, 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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