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Outline
The existing ore treating and leaching technology for low grade uranium-bearing molybdenum ore has the problems of low molybdenum leaching efficiency, high consumption of leaching reagents and high cost of industrial production. By the means of curing the ore with acid, the effects of particle size, acid content, acid curing ways, temperature and time on the curing effect and molybdenum leaching rate were studied mainly. The experimental results show that the molybdenum leaching rate of low grade uranium-bearing molybdenum ore can reach 72% after column leaching under the conditions of -3.2 mm size, 13% mass fraction of mixed acid, 4∶1 mL/g liquid-solid ratio, 85 ℃ curing temperature and 15 h curing time. The process has the advantages of short leaching cycle and low liquid-solid ratio, which is conducive to industrialization.
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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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