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A high-sulfur and high-silicon bauxite mine in Guizhou was treated with reverse flotation for desulphurization and desilication.The effects of grinding fineness, pH adjuster, activator, collector, foaming agent and inhibitor on flotation desulphurization and desilication were analyzed, and the optimal experimental conditions for flotation desulphurization and desilication of the bauxite mine were determined. The research results show that when the grinding fineness of the raw ore is－0.074 mm accounting for 75.00%, the dosage of sodium carbonate is 1 500 g/t, the dosage of copper sulfate is 100 g/t, the dosage of mixed collector is 300 g/t, and the dosage of foaming agent is 84 g/t, the raw ore is subjected to a closed-circuit test of reverse flotation desulphurization with “one coarse, one fine and two sweeps”, and the desulphurized aluminum concentrate with a yield of 79.27%, a desulphurization rate of 85.58% and a sulfur content of 0.31% is obtained. When the grinding fineness of desulphurized aluminum concentrate is－0.074 mm accounting for 88.00%, the dosage of sodium carbonate is 600 g/t, the dosage of soluble starch is 200 g/t, and the dosage of Y28 collector is 525 g/t, the reverse flotation desilication closed-circuit test of “one coarse, one fine and two sweeps” is carried out, and the aluminum concentrate yield is 64.21%, the Al2O3 recovery rate is 68.46%, the Al2O3 grade is 59.37%, the aluminum silicon ratio is 5.83, and the sulfur content is 0.32%.
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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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