Flotation activating agent of marmatite and blende and preparation method thereof

Abstract

The invention provides a flotation activating agent of marmatite and blende, which is a coordination compound of copper and ammonia and is characterized in that the molecular formula of the coordination compound is [Cu(NH3)x]2+, wherein X=1-8. The activating agent of the invention solves the problem of selected activation and inhibition of marmatite, overcomes the problems of low activation selection, low zinc concentrate grade, serious metal mutual containing and the like of common activating agent copper sulphate and solves the problems of high-efficiency enrichment and comprehensive recovery of concomitant rare and noble metal. The activating agent is activated under the condition that pH value is as low as 7-11, provides necessary guarantee for reducing lime dosage in production, reasonably and effectively recovers other sulfide minerals and comprehensively recovers rare metal, and has the advantages of high activation efficiency, low production cost and the like. The invention also applies a preparation method for the flotation activating agent.

Description

technical field [0001] The invention relates to the technical field of mineral processing engineering and comprehensive utilization of rare and precious metals, in particular to a high-efficiency activator for sphalerite and sphalerite flotation, a preparation method and application thereof. Background technique [0002] my country's zinc metal reserves account for 15% of the world's total reserves, ranking second in the world. At the same time, my country is also a big zinc producer. In 2007, the zinc metal output reached 3.749 million tons, ranking first in the world, and the export volume reached 275,600 tons. With the development of the national economy and the increasing demand for zinc metal, it is urgent to develop and utilize complex and difficult-to-select resources. Some domestic lead, zinc, sulfur, iron or zinc, copper, tin, iron, sulfur lead Zinc mines and zinc-tin mines contain refractory sphalerite to varying degrees, for example, the Dachang and Hesan lead-zin...

AI Technical Summary

Problems solved by technology

[0007] (3) A large increase in the amount of lime not only increases the cost of beneficiation and increases the workload of workers, but also from the perspective of beneficiation and comprehensive recovery and utilization, a large amount of lime is not advisable

When a large amount of lime is used to adjust the pH value and suppress other sulfide minerals in the zinc selection process, the next step of flotation must use a large amount of sulfuric acid to neutralize the lime in the slurry to reduce the pH value, or add a large amount of activator to activate Compared with flotation of other sulfide minerals, this not only further increases the cost of beneficiation, but also the calcium sulfate generated by the reaction of lime and sulfuric acid is easy to block the pipeline and scale on the surface of the gravity separation equipment, which seriously affects the continuity of the beneficiation process and the quality of the gravity separation. recovery; in addition, sulfuric acid can cause corrosion problems for pipelines and beneficiation equipment

[0008] (4) Copper sulfate and its combined activator will activate the difficult-to-float pyrrhotite while activating the sphalerite, increasing the iron content in the zinc concentrate, which is beneficial to the subsequent hydrometallurgical process, zinc and indium The further separation and enrichment of

[0009] It can be seen that the conventional activators and inhibitors of sphalerite currently used at home and abroad have many defects, and the efficiency and selectivity of their activation and inhibition are not high, resulting in low zinc recovery and zinc concentrate grade. Mutually serious