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High gradient magnetic separation technique was adopted to separate the (tantalum-niobium)-tin bulk concentrate obtained from gravity separation. The effects of magnetic intensity, pulsating frequency, magnetic rod matrix diameter and rotating speed of ring on (Ta-Ni)/Sn separation efficiency were studied. The test results show that, from the bulk concentrate with grades of Ta, Ni and Sn respectively as 11.65%, 9.33% and 19.59%, the final tantalum-niobium concentrate containing 22.31% Ta, 17.38% Ni and 3.22% Sn can be collected with the recoveries of Ta, Ni and Sn respectively as 95.48%, 92.88% and 8.20%, respectively. Meanwhile, a tin concentrate with Sn grade of 35.87% and Sn recovery of 91.80% can be obtained. The tantalum-niobium and tin minerals can be effectively separated.
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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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