THE DISTRIBUTION OF SOME RARE METALS IN THE PROCESS OF SEPARATION OF ORGANIC MATTER FROM ESTONIAN DICTYONEMA ARGILLITE
1993; Estonian Academy Publishers; Volume: 10; Issue: 4 Linguagem: Inglês
10.3176/oil.1993.4.04
ISSN1736-7492
Autores ResumoIn our previous works [l, 2] flow-sheets for beneficiation of argillites from Maardu and Toolse phosphorite deposits with the aim to obtain organic matter (OM) and pyrite concentrates have been presented.As is known [3, 4], these argillites contain several rare metals, of them uranium, molybdenum and vanadium being the most 35.1 % respectively.In the rougher flotation of Toolse argillite (Fig. 2), affording the OM concentrate in 43.6 % yield, the recovery of rare metals was 60 %.In each stage of the cleaner flotation, the OM concentrate was enriched in OM and rare metals.In the third stage of the cleaner flotation the yield of material was 34.3 % and the recovery of rare metals in the froth product 49-54 %.In the last stage of the cleaner flotation the OM concentrate, whose organic content was 61.5 %, in 12.9 % yield was separated.The content of rare metals in this concentrate was high, viz. 1008, 325and 1790 g/t for Mo, U and V respectively, being augmented in comparison with feed material by a factor of 2.2, 2.0 and 1.6.Their recovery in this final concentrate was low, 21-29 %, because the underflow products in the cleaner flotation were notThe Distribution of Some Rare Metals in the Process of Separation ...
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