Although early zinc oxide mines are already closed in Italy and France, zinc concentrates from oxidized ores in Brazil, Namibia, Iran and Australia also account for a certain proportion. From the Second World War to the 1980s, Italy and France took the lead in research on the processing of ore processes containing heteropolar mines. After the resources of these two countries have been exhausted, research work in this area has stalled. The Brazilian company producing zinc concentrates operates an underground mine that mines zinc-zinc ore and an open-pit mine that mines heteropolar ore. Ore beneficiation plant to handle both were treated with different beneficiation circuit. The pharmaceutical system for flotation of wurtz ore is to pre-vulcanize zinc oxide minerals with sodium sulfide and primary amines as flotation collectors. Flotation to the mine does not remove mud, flotation to obtain a concentrate with a zinc grade of 44% and a recovery rate of 87%. The heteropolar ore needs to be de-sludged with a cyclone, and the flotation results are poor. The zinc grade of the concentrate is 38%, and the recovery rate is about 55%. In the heteropolar ore flotation circuit, polyacrylate is used as a dispersion/inhibitor of gangue minerals. The demand for zinc in Brazil has been growing steadily. In order to overcome the shortcomings of zinc concentrate products, a laboratory flotation test of mud-bearing ore ore was carried out to determine an effective dispersion process and a suitable flotation reagent system. The dispersion of ore particles in the slurry is very important for the selectivity of this ore flotation. Researched the nature of the ore, To explain the difference between the heteropolar ore and the wollastonite flotation results. The obtained results have certain reference significance for the operation of the concentrator and the research of other heteropolar ore.
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Flotation of zinc ore containing heteropolar ore
The zinc oxide ore is generally floated with a fatty amine collector . This collector requires a combination of sodium sulfide and sodium carbonate to pre-vulcanize the zinc oxide mineral. Especially for heteropolar ore, a dispersant is necessary. Fuel oil and foaming agent should be used to emulsify the collector. The large amount of flotation reagent is a feature of the ore flotation. In the pharmaceutical system, the ratio of each agent needs to be carefully optimized.