A kind of sphalerite flotation compound inhibitor and its application

Abstract

The invention discloses a sphalerite flotation compound inhibitor and an application thereof, belonging to the technical field of sphalerite flotation. The composite inhibitor of the present invention comprises an organic inhibitor and an inorganic inhibitor, the organic inhibitor is composed of one or both of emodin, chrysophanol, aloe-emodin or rhein, and the inorganic inhibitor is ZnSO 4 with CaO, Na 2 CO 3 、Na 2 S 2 o 5 or Ca(ClO) 2 composed of any of them. Compared with the single inhibitor, the compound inhibitor of the present invention can absorb the complex formed by the compound inhibitor in the pulp on the surface of sphalerite, increase the hydrophilicity of sphalerite and reduce its buoyancy. The composite inhibitor can be used in a low alkalinity environment, and can selectively inhibit sphalerite, and basically has no inhibitory effect on chalcopyrite; the composite inhibitor of the present invention is stable in nature, small in dosage, safe and non-toxic, and easy to add , can effectively realize the flotation separation of sphalerite and chalcopyrite.

Description

technical field [0001] The invention relates to a sphalerite flotation compound inhibitor and application thereof, belonging to the technical field of sphalerite flotation. Background technique [0002] Copper-zinc sulfide ores mainly refer to chalcopyrite and sphalerite, which are the main mineral sources for the production of copper and zinc metals. The production process mainly adopts the flotation process. The key to the flotation process is to realize the separation of copper and zinc, that is, to realize the Separation of ore and sphalerite. [0003] The separation of chalcopyrite and sphalerite has always been a major problem in today's mineral processing industry. Most of the copper-zinc sulfide ores in my country are fine-grained disseminated ores, and the copper-zinc minerals in the copper-zinc sulfide concentrate are very serious. And sphalerite activated by copper ions is difficult to be effectively suppressed. The existing research data show that the reasons fo...

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Problems solved by technology

[0010] Problems existing in the prior art: (1) Inorganic inhibitors are widely used in actual production, but there are also large consumption of agents, which need to be used under high alkalinity conditions, poor selectivity of agents, and poor inhibitory effect when used alone. While inhibiting sphalerite, it also has certain inhibitory effects on chalcopyrite. In addition, cyanide inhibitors are highly toxic, and flotation tailings are difficult to be effectively treated, and direct discharge will cause environmental pollution; (2 ) There are few types of organic inhibitors, and the inhibitory effects on different copper-zinc sulfide ores containing sphalerite are quite different; (3) The compound inhibitor is a simple combination of inorganic inhibitors and organic inhibitors, and its mechanism of action is not clear yet. (4) The composition of the new code agent is not clear, the mechanism of action is not clear, and the inhibitory effect on sphalerite in actual production is unstable; the existence of these problems makes the copper produced by mines in my country The intercontainment of copper and zinc in zinc concentrate is very serious, and the production index has been at a low level. Therefore, it is necessary to develop a new type of inhibitor with less dosage, good inhibitory selectivity, safety and non-toxicity, and strong adaptability to minerals. particularly urgent

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