The pyrite ore beneficiation is mainly flotation, supplemented by re-election. The selection of the drug is mainly xanthate, and there are ethyl xanthate, butyl xanthate, and isobutyl xanthate. Some of the plants currently use newly developed pharmacies. For example, a HN-1 medicinal agent in a concentrator in Guangdong is used as a collector, and its collection ability is stronger than that of butyl xanthate. Some plants will be selected from different classes of xanthate combination, such as iron ore using Jinshan shop acetate and isobutyl xanthate xanthate combination 4:1 proportion as collector. The inhibitor inhibits quartz and silicate minerals with water glass, MgO by sodium starch and sodium hydroxide, and 2 # oil for the foaming agent.
The pyrite ore selection process is generally one coarse and two fine to meet the requirements. Source of raw materials pyrite ores, tailings selected from copper, iron ore tailings is selected, is selected from lead zinc tailings, etc. Molybdenum tailings. For example, after a copper ore tailings in a pyrite ore dressing plant in Anhui is concentrated and dehydrated and decontaminated, the 60% concentration of the bottom stream is adjusted to 30% to 35% with acidic water, and then a coarse and two selected sulfur is used to obtain 45%. The grade of sulfur concentrate has a recovery rate of 92% and an annual output of 357,500 tons.
A concentrating plant in Guangdong uses a closed-circuit grinding, a coarse, a fine, and a second sweep to produce pyrite with a sulfur grade greater than 45%.
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