Full
Outline
To enhance the economic benefits of a silver-lead polymetallic ore concentrator in Henan Province, a systematic study was conducted on flotation process optimization and reagent system innovation based on the analysis of silver occurrence state and the paragenetic relationship among carrier minerals through process mineralogy. The research outcomes demonstrate that by implementing a process flow consisting of two roughers, three cleaners and three scavengers, and substituting the conventional sodium sulfide with a composite depressant system consisting of sodium silicate and CMC (carboxymethyl cellulose), the industrial production operates stably and continuously. As a result, the quality of lead concentrate is significantly improved, and the pricing coefficients of associated metallic elements are also enhanced simultaneously. The lead concentrate is obtained with Ag grade of 14 876.15 g/t at recovery of 87.77%, and Pb grade of 15.28% at recovery of 73.34%. Compared to the original reagent system, the Ag grade of the concentrate increases by about 4 923 g/t, while the recovery decreased slightly by 0.80 percentage points. The Pb grade of the concentrate increases by 5.05 percentage points and the corresponding recovery increases by 1.93 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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