Assessment of the Possibility of Copper Copper-containing Intermediate Product Recovery from the Processing Tailings
Abstract
Been studied the material composition of processing factory copper tailings. Research has shown that the copper is in the form of aggregates, and non-metallic inclusions in minerals and basic amount is in the class of 0.074 mm. To extract the copper and silver from large factions of the most perspective technology is considered to be a pre-classification of tails, followed by milling the coarse fraction and flotation.The experimental results on the optimal fineness milling of tails indicate that with the increase fineness of up to 90% by class minus 0.074 mm copper recovery in the concentrate increases. At finite fineness milling of tails 90.0% -0.074 mm by the scheme comprising a base and a control flotation possible to obtain a tailings containing less than 0.03%.The results of flotation beneficiation processing factory tailings indicate that by the scheme, which includes main, control and three recleaning operation concentrates the main and control flotation using reagents: Na2S, kerosene, butyl xanthogenate, T-90, OPSB possibly receive rough copper concentrate containing 8.85% copper, 81.12% at extraction. Tailings of the control flotation with a copper content of 0.022% are dumps. The obtained rough copper concentrate with a copper content of 8.85% can be directed to further processing hydrometallurgical method.
Keywords:tailings, sulfides,grinding size, electron probe microanalyzer, flotation
