The technology of processing of non-profitable ores, wastes, old and current tailings of preparation plants is offered.

• Gravitaty enrichment (combination of jigging, screw and centrifugal separation, table concentration, slime enrichment);

• Flotation (collective, collective-selective, selective with use of the effective collectors and combination low-toxic reagent-modifiers);

• Low energy capacity;

• Low share of wastes(up to 90 percent of wastes are utilized);

• Ecological safety (because low-toxic reagents are used);

• High technological-economic parameters (70-90% extraction of gold and silver and 60-80% extraction of nonferrous metals from wastes).

The technology was approved in enlarge-laboratory conditions on ores of Gaysky, Zyryanovsky, Leninogorsky, and Dal’negorsky polymetal mining-benefication plants. It was accepted to development on Gaysky mining-benefication plant.

• Technological trail of technogeneous formation on additional extraction of precious and nonferrous metals in commodity concentrates;

• Drawing up of the recommendations for technological rules.

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