A method for preparing and flotating gypsum-containing zinc oxide ore
By adding a high-molecular-weight calcium ion chelating agent and sodium carbonate during the grinding and flotation slurry preparation of zinc oxide ore, the influence of gypsum-dissolved calcium ions on the surface of zinc oxide minerals was resolved, the sulfidation efficiency of the sulfiding agent was improved, and efficient flotation recovery of zinc oxide minerals was achieved.
Patent Information
- Application Number
- CN202411734483.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2044-11-29
AI Technical Summary
The presence of soluble salts such as gypsum in zinc oxide ore affects the flotation process, resulting in poor separation performance, and existing technologies are unable to effectively recover zinc oxide resources.
During the grinding and flotation slurry preparation process, a high molecular weight calcium ion chelating agent and sodium carbonate are added. Through chelation and flocculation reactions, the impact of gypsum-dissolved calcium ions on the surface of zinc oxide minerals is reduced, and the sulfidation efficiency of the sulfiding agent is improved. Sodium sulfide and a collector are used for flotation.
It effectively reduces the adsorption of calcium ions dissolved in gypsum on the surface of zinc oxide minerals, improves the surface sulfidation efficiency of sodium sulfide, achieves efficient flotation recovery of zinc oxide minerals, and obtains better flotation indicators.