Macromolecule bridging flotation method for combined copper disseminated body

A polymer and bridging technology, applied in flotation, solid separation and other directions, can solve the problems of no flotation recovery, complex adsorption characteristics, and small number of copper atoms on the surface, so as to increase the cost of flotation reagents and reduce the cost of flotation reagents. The effect of low cost and less copper ion consumption

Active Publication Date: 2012-09-26
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for bound copper, the copper atoms disseminate into the gangue to form a bound copper disseminated body, and replace other metal ions with the same type and shape to form the same type of bound copper. It is also very complicated. Although it can be regarded as chemical adsorption, the activity and strength of adsorption are incomparable with stable copper compounds.
Moreover, the radius of the copper atom is small, and the anions or groups around it often "cover" the copper ion, so that the interaction with the collector is affected by the steric hindrance effect, and the adsorption capacity of the collector is reduced.
[0006] Therefore, the essential characteristics of the difficult selection of combined copper disseminated bodies are the small number of copper atoms on the surface, the complex environment of copper atoms, the large steric hindrance effect of surrounding anion groups, and the difficulty in forming stable adsorption by collectors, and it is also difficult to form dense clusters on the microscopic scale. adsorption
For this reason, the combined copper disseminated body has not been recovered by flotation so far.

Method used

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  • Macromolecule bridging flotation method for combined copper disseminated body
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  • Macromolecule bridging flotation method for combined copper disseminated body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The copper grade of the ore in the combined copper disseminated body is 0.45%, the distribution rate of copper in the combined copper disseminated body is 80%, and the theoretical copper grade in the combined copper disseminated body is 4-6 wt%.

[0029] (1) The ore containing the copper-bound disseminated body is ground to make the monomer dissociation degree of the bound copper disseminated body greater than 80%, put it into the first mixing tank, add water to adjust the pulp concentration to 30wt%, add polyethylene diethyl Sodium thiocarbamate is 30g / t, stirred at a speed of 0.5-1m / s for 4-5min, so that polyethyl dithiocarbamate anion will undergo polyatomic adsorption on the surface of the copper-dipped body.

[0030] (2) Put the ore slurry obtained in step (1) into the second mixing tank, add 30g / t copper sulfate, and stir at a speed of 0.5-1m / s for 3-4min, so that the copper ions are deposited on the polyethyl group on the mineral surface. Adsorption on the dithio...

Embodiment 2

[0035] The copper grade of the combined copper disseminated body is 0.50%, the copper distribution rate of the combined copper disseminated body is 60%, the copper distribution rate of the chrysocolla is 30%, and the theoretical copper grade of the combined copper disseminated body is 3-4 wt%.

[0036] (1) The ore containing bound copper disseminated body is ground, so that the monomer dissociation degree of bound copper disseminated body and chrysocolla is greater than 80%, put into the first mixing tank, add water to adjust the pulp concentration to 35wt%, add Sodium polyethyldithiocarbamate 20g / t, stirred at a speed of 0.5~1m / s for 4~5min, so that polyethyldithiocarbamate anions will undergo polyatomic adsorption on the surface of the combined copper disseminated body and chrysocolla .

[0037] (2) Put the ore slurry obtained in step (1) into the second mixing tank, add 20g / t copper sulfate, and stir at a speed of 0.5-1m / s for 3-4min, so that the copper ions are deposited o...

Embodiment 3

[0042]The copper grade of the combined copper disseminated body is 0.40%, the copper distribution rate of the combined copper disseminated body is 50%, the copper distribution rate of the isomorphic combined copper is 40%, and the theoretical copper grade of the combined copper disseminated body is 3-4 wt%.

[0043] (1) The ore containing the copper-bound disseminated body is ground, so that the monomer dissociation degree of the bound copper-dissolved body is greater than 80%, put into the first mixing tank, add water to adjust the pulp concentration to 40wt%, add polyethylene Sodium thiocarbamate 40g / t, stirred at a speed of 0.5-1m / s for 4-5min, so that polyethyl dithiocarbamate anion undergoes polyatomic adsorption on the surface of the bound copper disseminated body.

[0044] (2) Put the ore slurry obtained in step (1) into the second mixing tank, add 40g / t copper sulfate, and stir at a speed of 0.5-1m / s for 3-4min, so that the copper ions are deposited on the polyethyl gro...

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PUM

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Abstract

The invention provides a macromolecule bridging flotation method for a combined copper disseminated body, and aims to the combined copper disseminated body which can not be recycled through a conventional flotation manner. The method comprises the following steps of: adopting macromolecule bridging agent, copper ion bridging ion and xanthate bridging collecting agent; adsorbing polyatom on the surface of the combined copper disseminated body through macromolecule bridging agent ion; re-adsorbing copper ion on bridging agent, wherein the bridging agent is adsorbed on the surface; adsorbing a collecting agent xanthate negative ion on bridging copper ion; and dewatering the surface of the combined copper disseminated body, thus achieving the effective flotation. In the method, the macromolecule bridging agent is of polyatom adsorption ability, therefore, adsorption strength of the bridging agent on the surface of the combined copper disseminated body can be greatly improved, the copper ion is utilized as bridging ion, and mineral, bridging agent molecule and collecting agent xanthate molecule are connected together, so that collecting agent xanthate can be indirectly adsorbed on the surface of the combined copper disseminated body, and flotation recycling of the combined copper disseminated body which can not be floated and recycled can be achieved.

Description

technical field [0001] The invention relates to a polymer bridging flotation method combined with copper disseminated bodies, which belongs to the technical field of ore dressing. Background technique [0002] Flotation is achieved through the adsorption of collectors on the mineral surface to generate sufficient hydrophobicity. If the hydrophobicity is insufficient, the flotation effect will not be ideal. During the flotation process of copper ore, collectors are basically combined with copper atoms on the mineral surface by chemical adsorption, and fixed on the mineral surface, and its hydrophobic groups make the mineral surface hydrophobic. Therefore, the number and distribution of copper atoms on the mineral surface become an important factor in determining the buoyancy of minerals. For example, chalcocite and chalcopyrite in copper sulfide ore have more copper atoms per unit surface area than chalcopyrite, and chalcopyrite shows better buoyancy than chalcopyrite. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018
Inventor 文书明张文彬彭金辉刘殿文方建军张仪刘建吴丹丹沈海英顾晓春
Owner KUNMING UNIV OF SCI & TECH
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