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Ammonium-amine coupling activation method based on copper mineral sulfurization floatation system

A mineral and system technology, used in flotation, solid separation, etc.

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

Based on the above reasons, the conventional sulfidation flotation technology has not yet solved the problem of efficient recovery of copper in mixed copper ores or copper oxide ores.

Method used

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  • Ammonium-amine coupling activation method based on copper mineral sulfurization floatation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Copper oxide ore with a copper grade of 1.64% in the raw ore, an oxidation rate of 78.12%, and a binding rate of 17.65%.

[0022] (1) Copper oxide ore undergoes wet grinding to make the ore grind to a fineness of -74μm, accounting for 88%, adjust the mass concentration of the pulp to 30%, enter the first mixing tank, add ammonium bicarbonate 300g / t, phosphoric acid Diammonium hydrogen 300g / t, ammonium humate 150g / t, ethylenediamine phosphate 120g / t, sodium sulfide 1000g / t and stirred at a speed of 200-300r / min for 8min to make the above-mentioned agents in the copper minerals and copper minerals. The activation effect occurs on the surface of the organism.

[0023] (2) Put the pulp obtained in step (1) into the second mixing tank, add 180g / t isoamyl xanthate, 40g / t pine oil, and stir for 2min at a speed of 200-300r / min to make the isoamyl The base xanthate anions adsorb on the surface of copper minerals and copper mineral associations to form a hydrophobic surface.

...

Embodiment 2

[0029] Mixed copper ore with a copper grade of 0.81% in the raw ore, an oxidation rate of 28.12%, and a binding rate of 10.65%.

[0030] (1) After the mixed copper ore is wet-ground, the ore is ground to a fineness of -74μm, accounting for 85%, the mass concentration of the pulp is adjusted to 38%, and it enters the first mixing tank, adding ammonium bicarbonate 100g / t, phosphoric acid Diammonium hydrogen 100g / t, ammonium humate 100g / t, ethylenediamine phosphate 50g / t, sodium sulfide 300g / t and stirred at a speed of 200-300r / min for 8min to make the above agents in copper minerals and copper minerals. Activation reactions occur on the surface of living organisms.

[0031] (2) Put the pulp obtained in step (1) into the second mixing tank, add 100g / t isoamyl xanthate, 30g / t pine oil and stir for 2min at a speed of 200-300r / min to make the isoamyl The xanthate anions adsorb on the surface of copper minerals and copper mineral associations to form a hydrophobic surface, and at th...

Embodiment 3

[0037] Copper oxide ore with a copper grade of 0.94% in the raw ore, an oxidation rate of 78.12%, and a binding rate of 18.12%

[0038] (1) After the copper oxide ore is ground, the ore is ground to a fineness of -74μm, accounting for 95%, the mass concentration of the pulp is adjusted to 25%, and it enters the first mixing tank, adding ammonium bicarbonate 300g / t, hydrogen phosphate 400g / t of diammonium, 200g / t of ammonium humate, 120g / t of ethylenediamine phosphate, 2000g / t of sodium sulfide and stirring at a speed of 200-300r / min for 8min, so that the above-mentioned agents are mixed in copper minerals and copper minerals. Activation reaction occurs on the surface.

[0039] (2) Put the pulp obtained in step (1) into the second mixing tank, add 300g / t isoamyl xanthate, 50g / t pine oil and stir for 4min at a speed of 200-300r / min to make the isoamyl Xanthate anions adsorbed on the surface of copper minerals and copper mineral associations to form a hydrophobic surface.

[00...

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Abstract

The invention discloses an ammonium-amine coupling activation method based on a copper mineral sulfurization floatation system. For solving the problems of the conventional sulfurization floatation system that sulfurization efficiency is not high, the adsorption stability of a sulfide film on the surface of copper oxide ore is poor and the sodium sulfide generated an inhibiting action on copper sulphide ore, a 'vulcanizer-ammonium-amine salt' coupling vulcanization system is adopted, and ammonium-amine salt easily forms a coordination compound in various structures together with copper ions on the surface of ores; and a vulcanizer reacts with the coordination compound to form a 'novel copper sulphide' which can be firmly adsorbed on the surface of copper ore, the variation of the microstructure of the surface of copper ore is caused to strengthen hydrophobic property, therefore, the floatability of copper ore is greatly improved, and the high-efficiency recycle of copper in a mixed copper ore or copper oxide ore is realized.

Description

[0001] technical field [0002] The invention relates to an ammonium-amine coupling activation method based on a copper mineral sulfidation flotation system, and belongs to the technical field of mineral processing. Background technique [0003] The flotation of mixed copper ore and copper oxide ore mainly adopts sulfide flotation technology. The vulcanizing agents used in the vulcanization flotation process mainly include sodium sulfide, sodium hydrosulfide, ammonium sulfide, calcium sulfide and sodium polysulfide. They are both activators of copper oxide minerals and strong inhibitors of copper sulfide minerals or sulfided copper oxide minerals. The mixed copper ore and copper oxide ore generally have the common characteristics of mixed oxygen and sulfur. Because of this, the efficient beneficiation of mixed copper ore and copper oxide ore has always been a major problem in the field of beneficiation at home and abroad. The reason: in the uncoupled sulfide flotation sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B1/04
Inventor 方建军文书明张文彬刘殿文李艺芬章晓林沈敏
Owner KUNMING UNIV OF SCI & TECH
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