Metal Extraction from Old Tailings for Utilization
S. I. EVDOKIMOV1, V. S. EVDOKIMOV1,2
1North Caucasian Institute of Mining and Metallurgy, ul. Nikolaeva 44, Vladikavkaz, 362021 Republic of North Ossetia-Alania, Russia
2GEOS Research and Manufacturing LLC, ul. Levanevskogo 253, Vladikavkaz, 362035 Republic of North Ossetia-Alania, Russia
Keywords: old tailings, hydroseparation, thin-layer zone, flotation, jet scheme, extraction, lead, zinc, non-metallic fraction, reclamation
Abstract
The authors study potential of utilizing oil tailings of a lead-zinc processing plant. Conversion of sulfides into marketable selective concentrates is carried out in two stages: sulfide product is extracted from tailings, first, and processed, second, jointly with current ore material, using the accepted technology, or separately, by jet flotation. Sulfides are extracted from tailings using a channel-type hydroseparator. A feature of flotation scheme is jet counterflow of feed (in both cycles) and rough concentrate. Conditions and composition are developed for manufacturing a quality product from non-metallic tailings: lime-sand bricks, glass containers, fiberglass and marbled glass.
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