高硫低锌型难选硫化矿的低碱选矿分离方法
By combining two mixed roughing processes and one scavenging closed-circuit operation with the novel pyrite inhibitor QP-1 and lime, the problems of low zinc-sulfur separation efficiency and high reagent cost in high-sulfur, low-zinc, and difficult-to-process sulfide ores have been solved, achieving efficient and environmentally friendly zinc-sulfur separation and reducing mill energy consumption and reagent usage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA MINMETALS CHANGSHA MINING RES INST
- Filing Date
- 2023-11-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for the beneficiation and separation of high-sulfur, low-zinc, and difficult-to-process sulfide ores suffer from problems such as low zinc-sulfur separation efficiency, high reagent costs, and serious environmental pollution. In particular, under high-alkali conditions, it is easy to cause the loss of fine-grained sphalerite and blockage of reagent pipelines.
The process employs a closed-circuit operation consisting of two mixed roughing processes and one scavenging process, combined with the non-toxic and environmentally friendly new pyrite inhibitor QP-1 and lime to lower the pH value of the slurry. Zinc and sulfur separation is achieved through regrinding and dewatering concentration using a vertical mill. Activated carbon and QP-1 are used in conjunction with lime for selective inhibition, reducing the amount of lime used.
It improved zinc-sulfur separation efficiency, reduced mill energy consumption, reduced reagent costs, purified the flotation environment, increased zinc and sulfur recovery rates, and reduced precious metal loss.
Smart Images
Figure CN117900019B_ABST