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Outline
Taking the fine grinding deep separation tailings of micro-fine iron concentrate in a factory in Panxi area as the research object, the TiO2 grade is 19.51%, and the gangue minerals are mainly pyroxene, chlorite and amphibole. According to the characteristics of the ore, BY series inhibitors were developed and used with MOH collector. The optimal reagent dosage was determined by inhibitor screening test, inhibitor dosage test, collector dosage test and pH condition test, and the flotation closed-circuit test was carried out. The results show that considering the grade and recovery rate of titanium concentrate, it is determined that BY-3 is used as inhibitor, the optimal dosage is 1 500 g/t, the optimal dosage of MOH collector is 2 500 g/t, and the pH is controlled at about 3.5 during roughing. Through the closed-circuit process of "one coarse, one fine and desulfurization, combining one coarse, one sweep and four fine, as well as returning the intermediate ore in sequence for titanium selection", the ilmenite concentrate with a yield of 30.98%, a TiO2 grade of 46.94% and a TiO2 recovery of 74.54% and the tailings with a TiO2 grade of 5.27% can be obtained. The research results can provide a reference for the efficient recovery and utilization of the same type of ore.
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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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