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Outline
A new inhibitor PN has been developed for copper sulfur flotation separation to address issues such as pipeline blockage and environmental pollution caused by the use of lime inhibitors. The selective inhibition performance and adsorption mechanism of PN inhibitor in flotation process were studied through systematic tests. The results indicate that PN inhibitor has a good selective inhibitory effect on pyrite, but has almost no effect on chalcopyrite. The results of the artificial mixed ore separation test show that under low alkali conditions (pH=8), the optimal separation effect of pyrite and chalcopyrite can be achieved when the dosage of PN inhibitor is 5 mg/L, and a copper concentrate with a copper grade of 31.3% and a copper recovery rate of 92.9% can be obtained. The contact angle measurement results indicate that PN inhibitor can selectively enhance the hydrophilic properties of pyrite surface. The analysis of the microstructure characteristics and elemental content changes of pyrite before and after PN treatment further confirms that PN inhibitor undergo physical adsorption on the surface of pyrite, which can achieve selective inhibition of pyrite. The research results prove that PN inhibitors has the potential to replace lime in copper sulfur separation.
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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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