PROCESSIBILITY OF FINE-GRAINED MAGNETITE-APATITE ORE MILL TAILINGS AT KOVDOR DEPOSIT
G. V. Mitrofanova1, Yu. P. Pospelova1, D. F. Sedinin2
1Mining Institute, Kola Science Center, Russian Academy of Sciences, Apatity, Russia
2Kovdor GOK, Kovdor, Russia
Keywords: Tailings pond, fine-grained old tailings, desliming, apatite and calcite flotation, collecting agents, thickening, slimes
Abstract
The article presents the laboratory-scale studies on processibility of fine-grained old tailings at Kovdor GOK. Effect of collecting agents represented by fat tall oil acids (FTOA) is investigated. The froth flotation tests show high selectivity of agent Berol-2015 relative to apatite. From the lab-scale tests, it is found that with collector FTOA, the P2O5 content of concentrate is not higher than 24.4% despite a high degree of desliming of flotation feed (~ 70.0%). With collector Berol-2015, the concentrate content of P2O5 reaches 35.0-37.7% without preliminary desliming.
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