Flotation of hematite ore

Iron ore of a metamorphic deposition based Anshan iron deposit. Ores plant treatment is hematite quartzite, iron minerals are mainly artifacts hematite, hematite semi artifacts; gangue minerals are quartz, followed by a hornblende, chlorite. The ore has an obvious strip-like structure, and the particle size of the impregnation is fine. The particle size of the pseudo-hematite and quartz is generally 0.02~0.2mm. The ore needs to be ground to -200 mesh 80% to separate the monomer. The flotation is carried out by anion collector weak alkaline pulp flotation method, the adjusting agent is sodium carbonate, the dosage is 1.8kg/t, and the 20% aqueous solution is added. The second-stage grinding machine has a flotation pH of 8.5~9.5 and a slurry temperature of 30~33c. The collector is a mixture of oxidized paraffin soap 390g/t and tal oil 130g/t. The process flow is shown below. The obtained flotation index is When the ore grade is 33.00%Fe, the concentrate grade is 61.20, and the recovery rate is 77.95% Fe.

A hematite flotation process

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