Fluorite Ore Beneficiation Process

Fluorite ore is brittle and easily broken. Therefore, how is it beneficiated? The crushing process uses a simple jaw crusher to avoid producing too much powdery fluorite ore. Screening is performed using a high-efficiency, thorough cylindrical screen to strictly separate the crushed product into three particle sizes: 30mm, 8-30mm, and 0-8mm. Because the quartz and fluorite in fluorite ore have a complex intergrowth relationship and are difficult to dissociate, and because quartz is activated by calcium, magnesium, and iron ions during fine grinding, which is difficult to suppress, the inductive effect of sodium sulfide is utilized to eliminate the harmful effects of calcium, magnesium, and iron ions.

Fluorite Calcium Removal Beneficiation Process

A fluorite calcium removal beneficiation process consists of a primary roughing operation and multiple cleaning operations. Oleic acid or its substitute is used as the collector for roughing, and a mixture of sulfuric acid and acidic water glass is used as a depressant for calcium-containing minerals. The ratio of sulfuric acid to acidic water glass is 1:0.5-1:2, and the combined dosage is 0.5-1.5 kg/t of raw ore. This fluorite calcium removal beneficiation process has the advantages of high calcium removal efficiency, simple process, and low cost, and can be used to obtain high-grade fluorite concentrate with very low calcium carbonate content from high-calcium fluorite ore.

The fluorite ore beneficiation process can be summarized as follows: Raw ore is fed into a jaw crusher by a vibrating feeder for primary crushing (also known as first-stage crushing, breaking the ore to 20-50mm). The initially crushed fluorite ore is then fed into a fine crusher for secondary crushing (breaking the ore to 3-5mm, 60%-90%). After these two stages of crushing, the ore enters a ball mill for grinding. The ball mill and spiral classifier typically form a closed-loop system; the material ground in the ball mill is then classified in the classifier. Qualified fine-grained ore proceeds to the next process, while unqualified coarse-grained ore is returned to the ball mill for further grinding. After separation, the fine-grained minerals are thoroughly and evenly mixed with flotation reagents in a mixing drum, and then enter the core of the fluorite ore beneficiation process – the flotation machine – for flotation. This involves one roughing stage, five cleaning stages, two scavenging stages (by controlling the pulp concentration, pH, and adding different reagents to obtain qualified concentrate) – wet concentrate – filter press – qualified concentrate. Tailings are discharged into tailings ponds.