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Outline
The main components of iron concentrate produced by Hualian Zinc Indium Concentrator are magnetite and pyrrhotite. There are some problems such as excessive sulfur content, poor quality, low sales price and high loss rate of tin metal in this iron concentrate. The efficient separation of pyrrhotite and magnetite was realized by the process of iron rough concentrate + low-intensity magnetic separation + pre-demagnetization + grading regrinding + pre-demagnetization + flotation desulfurization + magnetic separation. Finally, a high-quality iron concentrate with iron grade of 66.62% and sulfur content of 0.65% was obtained, and a high-iron sulfur concentrate with sulfur content of 25.61%, sulfur recovery rate of 96.06% and iron content of 59.52% was produced. At the same time, the loss rate of tin in iron concentrate was reduced, and a sulfur ore with a tin enrichment ratio of 3.69 times was produced, thereby reducing the loss of tin metal.
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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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