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Based on the process mineralogy study, an experimental study on grinding-separation technique was performed for JISCO's magnetite obtained from its suspension magnetization roasting process. In the experiment, a 110 mT low-intensity magnetic separator was firstly adopted for pre-concentration. The middlings were reground and processed by magnetic separation for enrichment and tailings discarding, and the obtained concentrate was subjected to reverse cationic flotation. Finally, the whole process produced the comprehensive concentrate grading 60.06% TFe and containing 5.17% SiO2, with metal recovery of 84.27%. In comparison with the previous processing technique, the TFe grade of concentrate is improved by 1.96 percentage points and the metal recovery is increased by 1.38 percentage points, while the SiO2 content falls by 1.06 percentage points.
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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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