The effects of the amount of NaFeS2, which was used as an additive, on solid-state reduction and magnetic separation for enrichment of nickel and cobalt, and also the reduction behavior of nickel laterite ore were studied. The results show that with the increase of NaFeS2 addition, the softening and melting temperature of nickel laterite ore decreases correspondingly during the reduction process; while particles of the Ni-Co-Fe alloy obtained by reduction increase accordingly. The enrichment and recovery effects of nickel and cobalt will be better by adding 10% NaFeS2. The nickel laterite ore, after being pressed into briquettes, was subjected to reduction at 1 100 ℃ for 60 min, followed by a process of grinding and magnetic separation, resulting in a high quality nickel-cobalt-iron powder grading 7.89% Ni, 0.66% Co and 74.01% Fe, at corresponding recoveries of 97.13%, 86.78% and 35.81%.
| 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 |