Activation method for flotation process of difficultly processed copper oxide ores

A technology of copper oxide ore and flotation process, which is applied in flotation, solid separation, etc., can solve problems such as difficult treatment of oxide copper ore, and achieve the effect of improving recovery rate and flotation index

Inactive Publication Date: 2011-10-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems such as refractory copper oxide ore, the present invention provides an activation method in the flotatio

Method used

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  • Activation method for flotation process of difficultly processed copper oxide ores
  • Activation method for flotation process of difficultly processed copper oxide ores

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Refractory copper oxide ore raw ore sample properties (mass percentage): Cu: 1.13%, oxidation rate 61.39%, binding rate: 16.74%, CaO: 21.38%, MgO: 16.17%, Al 2 o 3 : 1.63%, SiO 2 : 21.04%, Fe 2 o 3 : 2.11%, Au: <0.2 g / t, Ag: 9.2 g / t.

[0022] (1) Wet-grind 1 ton of copper oxide ore to a mass percentage of 320 mesh qualified particle size accounting for 90% to obtain a slurry with a mass concentration of 75%;

[0023] (2) Add 120 grams of ethylenediamine phosphate to the slurry in step (1), then add 1450 grams of sodium sulfide for co-activation, and then add 320 grams of isobutyl xanthate and amyl xanthate, of which isobutyl The mass ratio of xanthate and pentyl xanthate is 1:1, 60 grams of terpineol oil is added, and multi-stage flotation is carried out. After roughing, sweeping and refining, copper concentrate and tailings are produced.

Embodiment 2

[0025] Refractory copper oxide ore raw ore sample properties (mass percentage): Cu: 1.10%, oxidation rate 60.23%, binding rate: 15.29%, CaO: 21.99%, MgO: 16.87%, Al 2 o 3 : 1.71%, SiO 2 : 20.55%, Fe 2 o 3 : 2.23%, Au: <0.2 g / t, Ag: 9.6 g / t.

[0026] (1) Wet-grind 1 ton of copper oxide ore to a mass percentage of 320 mesh qualified particle size accounting for 90% to obtain a slurry with a mass concentration of 75%;

[0027] (2) Add 100 grams of ethylenediamine phosphate to the slurry in step (1), then add 1450 grams of sodium sulfide for co-activation, and then add 300 grams of isobutyl xanthate and amyl xanthate, of which isobutyl The mass ratio of xanthate and pentyl xanthate is 1:1, 60 grams of terpineol oil is added, and multi-stage flotation is carried out. After roughing, sweeping and refining, copper concentrate and tailings are produced.

Embodiment 3

[0029] Refractory copper oxide ore raw ore sample properties (mass percentage): Cu: 1.13%, oxidation rate 61.39%, binding rate: 16.74%, CaO: 21.38%, MgO: 16.17%, Al 2 o 3 : 1.63%, SiO 2 : 21.04%, Fe 2 o 3 : 2.11%, Au: <0.2 g / t, Ag: 9.2 g / t.

[0030] (1) Wet-grind 1 ton of copper oxide ore to a mass percentage of 320 mesh qualified particle size accounting for 85% to obtain a slurry with a mass concentration of 60%;

[0031] (2) Add 80 grams of ethylenediamine phosphate and ammonium hydrogen phosphate to the slurry in step (1), then add 2000 grams of sodium sulfide for co-activation, then add 250 grams of isobutyl xanthate, and add 50 grams of pinitol Oil is subjected to multi-stage flotation, and after roughing, sweeping and beneficiation, copper concentrate and tailings are produced.

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Abstract

The invention provides an activation method for a flotation process of difficultly processed copper oxide ores. The method comprises the following steps: carrying out wet grinding on copper oxide ores until the mass percentage of the qualified grains with the granularity of 320 mesh is 85-95%, thus obtaining a pulp; adding an activating agent into the pulp, wherein each ton of copper oxide ores are added with 80-200g of the activating agent; and adding sodium sulphide, wherein each tone of the copper oxide ores are added with 1000-2000g of the sodium sulphide; performing activation together; adding 250-400g of conventional collector and 50-80g of foaming agent into one tone of the copper oxide ores, and performing multistage flotation; and producing copper concentrates and tailings via roughing, scavenging and concentrating. The activation effect achieved by the method provided by the invention is better than the effect of conventional activation, and the total use amount of sodium sulphide can be reduced by 10-30%. Compared with the conventional activation flotation, the copper quality of the copper concentrates is slightly increased, and the recovery ratio can be improved by 3-8% by using the activation method provided by the invention.

Description

technical field [0001] The invention relates to an activation method in the ore beneficiation process, more specifically to an activation method in the flotation process of refractory copper oxide ore. Background technique [0002] The production practice and scientific experiments of copper oxide ore flotation have proved that the quality of the activation process is the key to its effective flotation, and the flotation activation process is mainly realized by adding an activator. Therefore, the activator It plays a vital role in the flotation process of copper ore, especially for refractory copper oxide ore. Some refractory copper oxide ores are difficult to be effective by conventional sulfidation flotation, but the addition of a new type of activator can completely change the entire flotation process. [0003] In the flotation of copper oxide ore, the commonly used activator is sodium sulfide (Na 2 S), sodium hydrosulfide (NaHS) is also used abroad, but it is not commo...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02B03D101/04
Inventor 刘殿文方建军章晓林文书明张文彬
Owner KUNMING UNIV OF SCI & TECH
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