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Flotation activating agent of marmatite and blende and preparation method thereof

A technology of sphalerite and activator, applied in flotation, solid separation, etc., can solve problems such as easy blockage of pipelines, serious metal inter-containment, increase of iron content in zinc concentrate, etc., to improve the grade and recovery rate of zinc and indium , high-efficiency separation and enrichment, and the effect of reducing the amount of sulfuric acid

Inactive Publication Date: 2013-05-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Get an appropriate amount of ammonia dissolved in ethanol to obtain the first solution (A), the concentration of the solution is 0.5% by mass; take an appropriate amount of Cu (NO 3 ) 2 ·3H 2 O is dissolved in ethanol to obtain the second solution (B), and the concentration of the solution is 0.5% by mass; 2 CO 3 Dissolved in ethanol to obtain the third solution (C), the concentration of the solution is 5% by mass; under stirring, solution A is slowly added to solution B, and at a stirring speed of 150 rpm, react 2 Minutes, then add C solution, continue to react at room temperature for 3 minutes, finally add water, the reaction generates a crude product of solid precipitation; the solution after the reaction is filtered under reduced pressure, and the 2 h 5 Wash and filter the precipitate obtained with OH, dry it with filter paper, and then dry it in the air to obtain a pure flotation activator, which is a new mineral processing activator for sphalerite and sphaleri...

Embodiment 2

[0032] Get an appropriate amount of ammonia dissolved in water to obtain the first solution (A), the concentration of the solution is 6.25% by mass; take an appropriate amount of CuSO 4 ·5H 2 O is dissolved in water to obtain the second solution (B), and the concentration of the solution is 25% by mass; 2CO 3 Dissolve in water to obtain the third solution (C), the concentration of the solution is 20% by mass; slowly add solution A to solution B under stirring, and react at room temperature for 15 minutes at a stirring speed of 200 rpm , then add C solution, continue to react at room temperature for 10 minutes, finally add ethanol, and react to generate a crude product of solid precipitation; 2 h 5 Wash and filter the precipitate obtained with OH, dry it with filter paper, and then dry it in the air to obtain a pure flotation activator, which is a new mineral processing activator for sphalerite and sphalerite.

[0033] The to-be-beneficiated ore is the ore of the Dulong zin...

Embodiment 3

[0036] Get an appropriate amount of ammonia dissolved in water to obtain the first solution (A), the concentration of the solution is 25% by mass; take an appropriate amount of Cu (NO 3 ) 2 Be dissolved in water, obtain the second kind of solution (B), the concentration of solution is 50 mass %; By the appropriate metering ratio of chemical reaction, NaOH and NaOH 2 CO 3 Dissolve in water to obtain the third solution (C), the concentration of the solution is 40% by mass; slowly add solution A to solution B under stirring, and react at room temperature for 30 minutes at a stirring speed of 150 rpm , then add C solution, continue to react at room temperature for 25 minutes, finally add ethanol, and react to generate a crude product of solid precipitation; 2 h 5 Wash and filter the precipitate obtained with OH, dry it with filter paper, and then dry it in the air to obtain a pure flotation activator, which is a new mineral processing activator for sphalerite and sphalerite.

...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/002
Inventor 童雄谢贤
Owner KUNMING UNIV OF SCI & TECH