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The direct leaching of Cu and Co from a copper-cobalt mixed ore in Congo(Kinshasa) by oxidation leaching method and reduction leaching method was studied. The leaching behavior of Cu and Co by the two methods was compared and analyzed. The effect of flotation—oxidation leaching on the leaching rate of copper and cobalt was further discussed. The results show that the leaching rates of Cu for oxidation and reduction leaching are about 80% and 70% respectively, and the leaching rates of Co are about 63% and 57% respectively, and the oxidation leaching effect is better than that of reduction leaching. By using the combined flotation—oxidation leaching process, the Cu and Co grades in closed-circuit flotation concentrates are 16.84% and 6.53%, respectively and the combined recovery rates of Cu and Co are 91.71% and 61.87%, respectively. The recovery effect of Cu and Co can be significantly improved.
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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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