A kind of beneficiation method of mixed copper ore with 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 the recovery and utilization of low oxidation rate oxygen-sulfur mixed copper ore cannot be solved at the same time. problems, achieve the effects of saving sulfuric acid, low recovery rate, and cost reduction
CN106902974BActive Publication Date: 2018-01-12KUNMING UNIV OF SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Publication Date
2018-01-12

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Abstract

A beneficiation method for a mixed copper ore with a low oxidation rate and a high binding rate. For an oxide-sulfide mixed copper ore with a low oxidation rate and a high binding rate, in the method, a copper sulfide ore and a free copper oxide ore therein are recovered by means of floatation, a floated ore concentrate is desulfurized by roasting to obtain a copper oxide concentrate, flue gas produced after the roasting is used for leaching out difficult-to-float copper oxide and bound copper in flotation tailings, then the tailings are precipitated by sodium sulfide to leach copper ions in ore pulp so as to obtain a copper sulfide sediment, a xanthate is added for floating the copper sulfide sediment to obtain a copper sulfide concentrate, the copper sulfide concentrate and an oxide-sulfide mixed copper concentrate are mixed, then a mixture is desulfurized by roasting, and a final copper oxide concentrate is obtained. According to the method, low-grade tailings are leached out by sulfur dioxide generated by sulfur in an ore concentrate, difficult-to-float free copper oxide and bound copper which are difficult to recover in flotation tailings are recovered, costs are low, and the comprehensive recovery rate of copper is improved 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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