Full
Outline
Ilmenite and titanaugite have similar physicochemical properties, and their flotation separation is difficult to achieve. Through flotation tests, Zeta potential measurements and adsorption capacity tests, the adsorption mode and action mechanism of naphthyl hydroxamic acid on the surfaces of ilmenite and titanaugite were investigated, and the key factors affecting flotation performance were clarified. The results show that the adsorption capacity of naphthyl hydroxamic acid on ilmenite is significantly higher than that on titanaugite, and its influence on the surface potential of ilmenite is greater than that on titanaugite. Such adsorption differences increase the flotation difference between ilmenite and titanaugite. The results of actual ore flotation tests show that when naphthyl hydroxamic acid is used as the collector for ilmenite, a titanium concentrate with TiO2 grade of 47.26% and recovery rate of 80.60% can be obtained in the closed-circuit flotation test, achieving the flotation separation of ilmenite and titanaugite. The research results can provide theoretical support for the development of novel flotation reagents for ilmenite and the optimization of titanium ore flotation processes.
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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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