Process methods of fluorite ore are gravity separation and flotation. Mineral processing equipment includes gravity separation equipment and flotation equipment; Gravity separation equipment: jig, only jig can deal with the coarse fluorite ore. Fluorite flotation equipment is similar with other mineral flotation equipment including crusher, ball mill, flotation machine etc.
The sulfide ore contained in fluorite is floated with xanthate collector, and then fatty acid collectors float fluorite. In flotation of fluorite, it can be also feasible to add a small amount of sulfide mineral to inhibit residual sulfide mineral, and ensures the quality of fluorite concentrate.
Mixed flotation of fluorite and barite flotation, and then separate them. In mixed flotation, obtain mixed concentrate with oleic acid as collector. Mixed concentrate separation can use positive or reverse flotation to obtain fluorite concentrate.
The fatty acid collects fluorite, and sodium silicate restrains quartz. The dosage of sodium silicate should be controlled properly; a small amount has activation to the fluorite, but inhibition function is not enough; excessive inhibits fluorite. Sometimes in order to increase the inhibitory effect of sodium silicate on quartz, some multivalent metal ions will be add.
The ore grade of a fluorite mine in Hebei is low and the degree of oxidation is large. The fluorite canbe has fine particle size and small hardness. The original production process is one refining and regrinding, and seven times of selection. 75.56%, the beneficiation index is poor, which seriously affects the production index and economic benefit of the enterprise. Therefore, Xinhai was entrusted to do technical transformation. Xinhai partially improved the flotation process and adjusted the inhibitor through fluorite beneficiation experiments. The improved production practice showed that the grade and recovery rate of fluorite were improved. Significantly improved.
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