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A beneficiation test was performed with a kind of fine-grained refractory fluorite ore in Hunan Province for rational development and utilization. In the test, a process consisting of coarse grinding, pre-concentration, regrinding and re-concentration of rough concentrate was adopted, with CYP-01 as a collector, sodium carbonate as a modifier, and water glass as a depressant. Depression in steps was performed in the cleaning stage. With the coarse grinding fineness of －0.045 mm 50%, regrinding fineness of－0.045 mm 85%, a kind of chemical-grade fluorite product with CaF2 grade of 93.04% was obtained at 64.24% recovery after one stage of roughing and eight stages of cleaning. It is shown that such kind of fine-grained refractory fluorite ore can be effectively recovered and utilized.
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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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