Chaihe Lead-Zinc Mine Concentrator (3)

Beneficiation plant features:
1) The original two-stage closed-circuit crushing mine is changed into three-stage two-closed road process, which not only reduces the particle size of the final product of the crushed ore, but also balances the load of the medium and fine crushing equipment. This non-ferrous metals processing plant in the country was still a rare.
2) In the sorting process, the sulfur and oxygen in the lead flotation cycle are partially mixed and floated, so that the phase recovery rate of lead oxide is increased by more than 12%. In the zinc flotation cycle, zinc oxide is floated and floated directly. Zinc oxide concentrate.
3) Since the plant was put into production, the flotation column has been used to select lead sulphide ore. The production practice shows that the flotation column is used for rough selection and sweeping. The sorting effect is not much different from that of the 6A flotation machine, but the flotation column Compared with the 6A flotation machine, it has the advantages of high enrichment ratio and strong selectivity, and is suitable for treating ore with more mud, fine particle size and high flotation concentration. The plant has 10 sets of ¢2.2m and ¢2.5m flotation columns, and 5 sets are used. It is an indispensable equipment for rough selection of lead sulfide and zinc sulfide.
4) Concentrate dewatering adopts the folding belt filter instead of the original 20m2 external filter type cylinder filter, and adds the tapping and wiping device. The dewatering effect is remarkable, the treatment volume is increased by 1.5~3 times, and the filter cake moisture is reduced by 3~5%. .
5) Comprehensive recovery of useful metals such as silver and mercury . The ore contains 30~60g/t of silver and contains 80~100g/t of mercury. The silver and mercury are enriched in lead concentrate and zinc concentrate by micro-cyanide process and mixed medicine. The comprehensive recovery index is: lead concentrate contains 1300~1500g/t, the recovery rate is 50~60%, zinc concentrate contains 700~800g/t, and the recovery rate is 60~70%.
The process indicators, unit consumption indicators and main equipment of the concentrator are shown in the following table:

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