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Cuprite vulcanizing strengthening method in mixed copper ore floatation

A technology for mixing copper ore and copper ore, applied in flotation, solid separation and other directions, can solve the problems of copper oxide ore not being effectively recycled, poor vulcanization effect, large consumption of chemicals, etc., to solve the problem of copper ore. Difficult to choose, low processing cost, and the effect of improving use efficiency

Active Publication Date: 2013-12-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for cuprite, the conventional vulcanization effect is not good, the consumption of xanthate flotation agent is large, and the recovery rate is low, which leads to the ineffective recycling of copper oxide ore mainly composed of cuprite.

Method used

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  • Cuprite vulcanizing strengthening method in mixed copper ore floatation
  • Cuprite vulcanizing strengthening method in mixed copper ore floatation
  • Cuprite vulcanizing strengthening method in mixed copper ore floatation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Cuprite-type copper oxide contains 1.20% copper grade, and the oxidation rate is 80%. The copper oxide ore is mainly cuprite, followed by malachite, and a small amount of chrysocolla. The copper in cuprite accounts for 50% of the copper contained in the ore. The content of calcium and magnesium in the form of carbonate is greater than 10%.

[0035] (1) After the mixed copper ore is passed through xanthate flotation copper sulfide ore, the pulp containing cuprite is introduced into a mechanical mixing tank, the concentration of the pulp is 25wt%~35wt%, and 600g / t of high iron sulfate raw ore is added, and 400g / t of hydrogen peroxide is added. t raw ore, ammonium persulfate 200 g / t raw ore, stirred at a speed of 300-400r / min for 10 minutes, to achieve pre-oxidation of the cuprite surface.

[0036] (2) Introduce the pulp obtained in step (1) into another mixing tank, add ammonium sulfide 800g / t, sodium sulfide 1500g / t, and stir at a speed of 300-400r / min for 4 minutes to a...

Embodiment 2

[0040] Cuprite-type copper oxide contains 0.90% copper, and the oxidation rate is 85%. The copper oxide ore is mainly cuprite, followed by azurite and malachite, and a small amount of chrysocolla. The copper in cuprite accounts for the copper in the ore. 60% of the calcium and magnesium content in the form of carbonate is greater than 10%.

[0041] (1) After the mixed copper ore is passed through xanthate flotation copper sulfide ore, the pulp containing cuprite is introduced into a mechanical mixing tank, the concentration of the pulp is 25wt%~35wt%, and 350g / t raw ore of high iron sulfate and 300g / t hydrogen peroxide are added t raw ore, ammonium persulfate 200 g / t raw ore, stirred at a speed of 300-400r / min for 12 minutes to achieve pre-oxidation on the surface of cuprite.

[0042] (2) Introduce the ore slurry obtained in step (1) into another mixing tank, add ammonium sulfide 650g / t raw ore, sodium sulfide 1200g / t raw ore, and stir at a speed of 300-400r / min for 5 minutes ...

Embodiment 3

[0046] Cuprite-type copper oxide contains 0.80% copper, and the oxidation rate is 75%. The copper oxide ore is mainly cuprite, followed by azurite and malachite. The calcium and magnesium content in the form of carbonate is greater than 10%.

[0047] (1) After the mixed copper ore is passed through xanthate flotation copper sulfide ore, the pulp containing cuprite is introduced into the mechanical mixing tank, the concentration of the pulp is 25wt%~35wt%, and 200g / t of high iron sulfate raw ore is added, and 200g / t of hydrogen peroxide is added. t raw ore, ammonium persulfate 200 g / t raw ore, stirred at a speed of 300-400r / min for 15 minutes to achieve pre-oxidation of the cuprite surface.

[0048] (2) Introduce the ore slurry obtained in step (1) into another mixing tank, add ammonium sulfide 400g / t raw ore, sodium sulfide 600g / t raw ore, and stir at a speed of 300-400r / min for 6 minutes to achieve the cuprite surface Enhanced vulcanization.

[0049] Copper oxide ore is rec...

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Abstract

The invention relates to a method for intensifying the vulcanization process of cupricite in mixed copper ore flotation. For the mixed copper ore with high calcium and magnesium, high oxidation rate and cuprite-based, first use xanthate to directly float copper sulfide ore, after flotation copper sulfide ore, add high iron sulfate, peroxidized Hydrogen, ammonium persulfate, stirring for a long time, the pre-oxidation of the cuprite surface. Ammonium sulfide and sodium sulfide are added to strengthen the sulfidation of the cuprite surface. Copper oxide ore is recovered by flotation with xanthate collectors added to cupricite pulp after intensive sulfidation. The cuprous oxide on the surface of cuprite is converted into copper oxide, which improves the vulcanization reaction activity from a thermodynamic point of view and plays a role in strengthening vulcanization. The surface of the pre-oxidized cuprite is vulcanized by ammonium sulfide and sodium sulfide, which improves the use efficiency of the agent. Surface pre-oxidation effectively solves the technical problem of cuprite refractory to sulfidation.

Description

technical field [0001] The invention relates to a method for intensifying the vulcanization process of cupricite in mixed copper ore flotation, and belongs to the technical field of mineral processing. Background technique [0002] The direct flotation of xanthate for copper sulfide ore in mixed copper ore has achieved good results and has been widely used. Among them, the most commonly used method for copper oxide ore is sulfide xanthate flotation. For copper carbonate minerals such as malachite and azurite in copper oxide ore, sodium sulfide can be used as a vulcanizing agent to obtain a good vulcanization effect, especially when adding inorganic ammonium salt and ethylenediamine, the vulcanization process is catalyzed, Acceleration, the vulcanization effect has been further improved, and xanthate flotation has achieved satisfactory results. But for cuprite, the conventional vulcanization effect is not good, the consumption of xanthate flotation agent is large, and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/001B03D101/02
Inventor 文书明刘殿文方建军沈海英丰奇成邓久帅刘建
Owner KUNMING UNIV OF SCI & TECH
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