Experimental Study on Beneficiation and Metallurgy of a Copper-cobalt Oxide Ore in Congo(DRC)
In order to efficiently recover copper and cobalt elements from a copper-cobalt oxide ore in Congo(DRC),aiming at the problem that copper sulfide and cobalt sulfide in copper-cobalt oxide ore can-not be effectively recovered by stirring leaching process,a combined experimental study on flotation and metallurgy of sulfide ore flotation first and then reduction acid leaching flotation tailings is carried out.The results show that the flotation indexes of sulfide concentrate with copper grade of 52.86%,cobalt content of 0.87%,copper recovery of 20.46%and cobalt recovery of 0.72%are obtained.The leaching indexes of 0.08%copper,0.09%cobalt,96.56%copper leaching rate and 93.52%cobalt leaching rate are obtained by closed-circuit leaching test of floating sulfur tailings.The total acid consumption of ore is 123.82 kg/t,and the acid consumption of gangue is 72.44 kg/t.
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