Sphalerite flotation composite inhibitor and application thereof

Abstract

The invention discloses a sphalerite flotation composite inhibitor and application thereof, and belongs to the technical field of sphalerite flotation. The composite inhibitor comprises an organic inhibitor and an inorganic inhibitor, the organic inhibitor is composed of one or two of emodin, chrysophanol, aloe-emodin and rheinic acid, and the inorganic inhibitor is composed of ZnSO4 and any one of CaO, Na2CO3, Na2S2O5 and Ca(ClO)2. Compared with a single inhibitor, the composite inhibitor has the advantages that a complex formed by the composite inhibitor in ore pulp can be adsorbed to the surface of sphalerite, the hydrophilicity of the sphalerite is improved, and the floatability of the sphalerite is reduced. The composite inhibitor can be used in a low-alkalinity environment, can selectively inhibit sphalerite, and basically has no inhibition effect on chalcopyrite; the composite inhibitor is stable in property, small in dosage, safe, non-toxic, easy to add and capable of effectively achieving flotation separation of sphalerite and chalcopyrite.

Description

technical field [0001] The invention relates to a sphalerite flotation composite inhibitor and an application thereof, belonging to the technical field of sphalerite flotation. Background technique [0002] Copper-zinc sulfide ore mainly refers to chalcopyrite and sphalerite, which are the main mineral sources for the production of copper and zinc metals. The production process mainly adopts flotation process. The key to the flotation process is to achieve copper-zinc separation, that is, to achieve brass Separation of ore and sphalerite. [0003] The separation of chalcopyrite and sphalerite has always been a major problem in the beneficiation industry. Most of the copper-zinc sulfide ores in my country are fine-grained disseminated ores. The copper-zinc sulfide concentrates contain very serious copper-zinc minerals. And sphalerite activated by copper ions is difficult to be effectively inhibited. The existing research data show that the reasons for the difficulty in flota...

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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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