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Combined inhibitor for separation of copper sulfide ore containing kaolin and separation method

A technology combining inhibitors and separation methods, which is applied in the field of mineral metallurgical processing, can solve the problems of large amount of beneficiation agents, difficulty in copper-sulfur separation, and low recovery rate of gold and silver, so as to improve the copper-sulfur separation effect, improve the separation effect, and The effect of technical indicators

Active Publication Date: 2022-07-12
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To overcome the existence of kaolin and other metal ions, causing kaolin to affect the quality of the concentrate, the separation of copper and sulfur is difficult, the amount of dressing reagents is large, the cost of the reagents is high, the recovery rate of gold and silver is low, and the environmental protection caused by the high pH value of the dressing tailings water question

Method used

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  • Combined inhibitor for separation of copper sulfide ore containing kaolin and separation method
  • Combined inhibitor for separation of copper sulfide ore containing kaolin and separation method
  • Combined inhibitor for separation of copper sulfide ore containing kaolin and separation method

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Experimental program
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Effect test

Embodiment 1

[0076] The raw ore grades are Cu 0.65% and S 5.19%. The mineral composition of this ore is relatively complex. The metallic minerals include chalcocite, copper blue, chalcopyrite, pyrite, pyrrhotite, and limonite. The gangue minerals are mainly quartz, kaolin, mica, potassium feldspar, chlorite, etc., of which the mass percentage of kaolin is 8.2%. The copper mineral inlay is relatively complex, and it is mostly associated with pyrite and hydrokaolinite.

[0077] The specific steps of the process flow are:

[0078] 1) Crushing and grinding the raw ore to fully dissociate the useful minerals and gangue minerals in the copper-sulfur ore, grind the ore to a particle size of -0.074mm, accounting for 65% of the copper-sulfur ore, and add water to adjust the slurry until the mass concentration of the ore pulp is 33 %, the pH of the pulp is 8.3;

[0079] 2) Add inhibitor sodium polyacrylate 30g / t (that is, add 30g sodium polyacrylate per ton of pulp), collector ethyl xanthate 30g / t...

Embodiment 2

[0093] The raw ore grades are Cu 0.85% and S 12.2%. The mineral composition of the ore is relatively complex, and the metallic minerals include chalcopyrite, chalcocite, bornite, pyrrhotite, pyrite, marcasite and so on. The gangue minerals are mainly quartz, kaolin and garnet, of which the mass percentage of kaolin is 10.6%.

[0094] The specific steps of the process flow are:

[0095] 1) Crushing and grinding the raw ore to fully dissociate the useful minerals and gangue minerals in the copper-sulfur ore, grind the ore to a particle size of -0.074mm, accounting for 70% of the copper-sulfur ore, and add water to adjust the slurry until the mass concentration of the ore pulp is 33 %, the pH of the pulp is 8.1;

[0096] 2) Add inhibitor sodium polyacrylate 50g / t, collector ethyl xanthate 35g / t to the pulp after grinding in step 1), stir for 3min, add foaming agent methyl isobutyl methanol 25g / t, Stir for 2 minutes, carry out the first copper-sulfur mixed roughing, and the rou...

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Abstract

The invention discloses a combined inhibitor and a separation method for separating copper sulfide ore containing kaolin. The combined inhibitor includes sodium percarbonate and lignoxanthate in a mass ratio of (70.0-95.0):(5.0-30.0). The separation method of the present invention is aimed at the copper sulfide ore containing kaolin, by adding polyacrylate to inhibit the kaolin in two stages, and the copper-sulfur mixed flotation obtains the copper-sulfur mixed concentrate; for the copper-sulfur mixed concentrate, the combined inhibitor and The form of lime combination inhibits the flotation of copper minerals from pyrite, achieves the separation of copper and sulfur under low alkalinity, and achieves the purpose of obtaining better technical indicators.

Description

technical field [0001] The invention relates to the technical field of metallurgical processing of minerals, in particular to a combined inhibitor and a separation method for separating copper sulfide ore containing kaolin. Background technique [0002] In the beneficiation of copper sulfide ore, in addition to copper minerals (including chalcopyrite, chalcocite, copper indigo, bornite, etc.), other minerals are generally pyrite (including pyrite, pyrrhotite, Marcasite, etc.), hematite, magnetite, gangue is mainly quartz, feldspar, sericite, illite, chlorite, amphibole, kaolin, anhydrite, biotite, diopside and iron Dolomite etc. [0003] In the beneficiation of copper sulfide ore, copper minerals and pyrite are the main target minerals for recovery, and copper-sulfur flotation separation is the main technical difficulty in the beneficiation of this type of ore. In addition, kaolin is a common non-metallic mineral in copper-sulfur ore. They are easy to muddy and float with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D1/00B03D103/02B03D101/06
CPCB03D1/018B03D1/00B03D2203/02B03D2201/06Y02W30/52
Inventor 于传兵刘志国王传龙邓朝安尤腾胜王亚运
Owner CHINA ENFI ENGINEERING CORPORATION
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