Beneficiation method of mixed copper ore having low oxidation rate and high binding rate

A technology of low oxidation rate and beneficiation method, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problem that the low oxidation rate has not been broken through, and cannot simultaneously solve the recycling and utilization of low oxidation rate oxygen-sulfur mixed copper ore, etc. problem, to achieve the effect of saving sulfuric acid, high cost and reducing cost
CN106902974AActive Publication Date: 2017-06-30KUNMING UNIV OF SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Publication Date
2017-06-30

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Abstract

The invention discloses a beneficiation method of mixed copper ore having a low oxidation rate and a high binding rate. With the respect to sulfide-oxidized mixed copper ore having a low oxidation rate and a high binding rate, copper sulphide ore and free copper oxide ore in the sulfide-oxidized mixed copper ore are recovered through floatation, flotation concentrate is subjected to desulphurizing roasting and copper oxide concentrate is obtained, roasting flue gas is used for leaching out refractory copper oxide and binding copper in flotation tailings, then copper ions in ore pulp are leached out by sodium sulfide sediment tailings and copper sulphide sediment is obtained, xanthate is added for the floatation of the copper sulphide sediment and copper sulphide concentrate is obtained, the cupric sulfide concentrate and sulfide-oxidized mixed copper concentrate are mixed, then a mixture is subjected to the desulphurizing roasting and final copper oxide concentrate is obtained. According to the method, the low-grade tailings are leached out by sulfur dioxide generated by sulfur in the concentrate of the mixed copper ore, refractory free copper oxide and bound copper, which are difficult to recover, in the flotation tailings are recovered, the cost is low, and a comprehensive recovery rate of copper is raised significantly.
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Description

technical field

[0001] The invention relates to a method for beneficiating mixed copper ore with low oxidation rate and high binding rate, and belongs to the technical field of beneficiation. Background technique

[0002] Copper ore resources mainly include copper sulfide and copper oxide. Copper sulfide ore accounts for 80% and copper oxide ore accounts for 20%. Due to the large amount of copper sulfide ore resources, ore dressing and recovery are relatively easy, so more than 80% of copper currently comes from copper sulfide ore resources. It is very difficult to recover copper oxide ore, and the recovery rate is low. In today's shortage of copper ore resources, it is imperative to use copper oxide resources efficiently, so the recovery of copper oxide ore has also made some progress. However, in copper ore resources, the surface of copper sulfide deposits is oxidized, forming a huge amount of oxygen-sulfur mixed copper ore resources. Oxygen-sulfur mixed copper ore has e...

Claims

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