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Extracting vanadium from stone coal vanadium ore with sericite as the main material and vanadium in the form of isomorphic vanadium by barium salt roasting—acid leaching was studied. The effects of grinding fineness, dosage of barite, roasting temperature, roasting time, liquid volume to solid mass ratio, sulfuric acid dosage, leaching temperature and leaching time on vanadium leaching rate were investigated. The results show that the vanadium leaching rate can reach 89% under the conditions of grinding fineness of -200 meshes of 70%, barite content of 5%, roasting temperature of 850 ℃, roasting time of 16 h, liquid volume to solid mass ratio of 2.0, sulfuric acid dosage of 8%, leaching temperature of 25 ℃ and leaching time of 2 h. The leaching effect is good.
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| 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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