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In order to reduce the content of gangue minerals in iron concentrate, improve the grade of iron concentrate as well as reduce the consumptions of reagents and steam in the flotation process flow of iron, the magnetic separation with elutriation is added in the original process of Baoshan Mining Co. and the operation of a set of flotation system is reduced. The process of elutriation-flotation shows the good function of improving grade of iron as well as reducing contents of silicon, potassium and sodium. The grade of iron of iron concentrate reaches 67.07%, content of SiO2 is 1.98%, content of K2O and Na2O is 0.172%, total operating productivity is 79.60% and recovery rate is 93.27%.
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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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