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Outline
A molybdenum ore has the characteristics of low grade, difficult separation, various molybdenum minerals and some of them are located in inclusions. In view of the refractory characteristics of the molybdenum ore, the leaching mechanism was analyzed. At high temperature, the leaching test was carried out with high concentration sulfuric acid. The results show that high concentration sulfuric acid crash pyrite inclusions; increasing the amount of sulfuric acid, increasing the temperature, increasing oxidant dosage and reducing the ore size are beneficial to the Mo leaching rate. Under the conditions of particle size -0.15 mm (accounting for 75%), sulfuric acid dosage 20%, MnO2 dosage 2%, leaching temperature 90 ℃, leaching time 3 h, the leaching rate of molybdenum increases from 30%~40% of conventional stirring leaching to 72%. The research results put forward some countermeasures for the exploitation and utilization of molybdenum ore resources, and made a breakthrough in molybdenum leaching effect.
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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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