Copper sulfide cobalt ore potential-pH regulation flotation method

Abstract

The invention discloses a copper sulfide cobalt ore potential-pH regulation and control flotation method, which comprises the following steps that S1, ore grinding-classification operation is conducted, specifically, copper sulfide cobalt ore is ground finely through crushing, ore grinding and classification, copper sulfide cobalt ore pulp meeting the flotation requirement is obtained, and the pulp automatically flows into a flotation stirring tank; S2, size mixing operation is conducted, specifically, quick lime milk and a sodium hydrosulfide solution are sequentially added into the stirringtank, the pH value of ore pulp is adjusted to be 9.2-9.5, and the potential of the ore pulp is adjusted to be -210 mV to -220 mV; then a flotation reagent is added into the stirring tank, wherein theflotation reagent comprises a foaming agent, a collecting agent and an inhibitor; and S3, flotation operation is conducted, specifically, after pulp mixing in the stirring tank is completed, ore pulpoverflows to a flotation machine to be subjected to flotation operation, the technological process of one-roughing, two-sweeping and three-concentrating is selected for copper sulfide cobalt ore flotation, and a copper sulfide cobalt concentrate product meeting the requirement is obtained. The floatability of the sulfur-copper-cobalt ore mineral is obviously improved, and the metal copper-cobalt recovery rate and the concentrate copper-cobalt grade are obviously improved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing engineering, and in particular relates to a potential-pH control flotation method for copper-cobalt sulfide ore. Background technique [0002] The main useful mineral of copper-cobalt sulfide ore is chalcopyrite (CuFeS 2 ) and sulfur copper cobalt ore (CuCo 2 S 4 ), both of which are easily selectable minerals. In industrial production, the method of flotation is usually used to recover the copper-cobalt metal in the copper-cobalt sulfide ore. During the flotation process, the copper-cobalt mineral can be obtained by using the conventional flotation agent foaming agent 2# oil, collector xanthate, etc. Recycle. [0003] Production practice and theoretical research have found that the industrial application of sulfide copper-cobalt ore flotation mainly has the following problems: ①The recovery rate of copper and cobalt metal fluctuates greatly with the change of pulp pH, resulting in ...

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Problems solved by technology

[0003] Production practice and theoretical research have found that the industrial application of sulfide copper-cobalt ore flotation mainly has the following problems: ①The recovery rate of copper and cobalt metal fluctuates greatly with the change of pulp pH, resulting in unstable metal recovery rate; ②Sulphide-copper-cobalt ore minerals The surface oxidation speed is fast, and the surface of the sulfur-copper-cobalt ore in contact with the air is oxidized during the flotation process, which reduces the floatability of this part of the sulfur-copper-cobalt ore and makes the recovery rate of metal cobalt low; Concentrate cobalt grade is low

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