A new process of extracting vanadium from stone coal |
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| Authors: | Yan-hua Liu Chao Yang Pei-you Li Shi-qi Li |
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| Affiliation: | (152) Department of Environmental Medicine, New York University School of Medicine, 57 Old Forge Road, Tuxedo, NY 10987, USA |
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| Abstract: | A new process of extracting vanadium from the stone coal vanadium ore in Fangshankou, Dunhuang area of Gansu Province, China
was introduced. Various leaching experiments were carried out, and the results show that the vanadium ore in Fangshankou is
difficult to process due to its high consumption of acid and the high leaching rate of impurities. However, the leaching rate
can be up to 80% and the content of V2O5 in the residue can be between 0.22%–0.25% in the process of ore fine grinding→oxidation roasting→mixing and ripening→aqueous
leaching→P2O4 solvent extraction→sulfuric acid stripping→oxidation and precipitation→decomposition by heat. Also, the quality of flaky
V2O5 produced by this process can meet the requirements of GB3283–87. The total leaching rate of vanadium is 70%. Also, three
types of wastes are easy to treat. The vanadium extraction process is better in relation to the aspect of environmental protection
than the sodium method. |
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