A beneficiation flowsheet comprised of two stages of roughing for copper-sulfur bulk flotation, bulk concentrate regrinding and Cu/S separation was adopted for optimization of beneficiation technique for a high-altitude copper ore. By applying asynchronous flotation for Cu-S bulk flotation and using KMY-1, a copper collector with good selectivity for Cu/S separation, efficient recovery of refractory copper minerals with microfine-grained dissemination can be actualized. A laboratory closed-circuit test finally produced a copper concentrate grading 23.06% Cu at 78.29% recovery, up by 2.92 percentage points and 9.59 percentage points correspondingly compared to the copper concentrate yielded from the on-site processing flow.
| 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 |