Combined inhibitor for separating kaolin-containing copper sulphide ore 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: 2021-08-06
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 separating kaolin-containing copper sulphide ore and separation method
  • Combined inhibitor for separating kaolin-containing copper sulphide ore and separation method
  • Combined inhibitor for separating kaolin-containing copper sulphide ore and separation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The raw ore grade is Cu 0.65%, S 5.19%. The mineral composition of this ore is relatively complex, and the metal minerals include chalcocite, copper blue, chalcopyrite, pyrite, pyrrhotite, limonite and so on. The gangue minerals are mainly quartz, kaolin, mica, potassium feldspar, chlorite, etc., and the mass percentage of kaolin is 8.2%. The intercalation of copper minerals is relatively complex, mostly associated with pyrite and hydrokaolinite, the intercalation particle size is finer, and the dissociation degree of monomer is poor.

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

[0078] 1) Crush and grind the raw ore to fully dissociate the useful minerals and gangue minerals in the copper-sulfur ore. Grind the ore until the particle size of the copper-sulfur ore is -0.074mm and account for 65%. Add water to adjust the slurry until the mass concentration of the ore pulp is 33 %, the pH value of the pulp is 8.3;

[0079] 2) Add inhibitor sodium polyac...

Embodiment 2

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

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

[0095] 1) Crush and grind the raw ore to fully dissociate the useful minerals and gangue minerals in the copper-sulfur ore. Grind the ore until the particle size of the copper-sulfur ore is -0.074mm and account for 70%. Add water to adjust the pulp to a mass concentration of 33 %, the pH value of the pulp is 8.1;

[0096] 2) Add inhibitor sodium polyacrylate 50g / t, collector ethyl xanthate 35g / t to the pulp after ore grinding in step 1), stir for 3min, add foaming agent methyl isobutyl carbinol 25g / t, Stir for 2 minutes, and carry out the first copper-sulfur mixed roughing, the roughing time is 5 minute...

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Abstract

The invention discloses a combined inhibitor for separating kaolin-containing copper sulphide ore and a separation method. The combined inhibitor is prepared from sodium percarbonate and lignin xanthate according to the mass ratio of (70.0 to 95.0) to (5.0 to 30.0). According to the separation method, for the kaolin-containing copper sulfide ore, kaolin is inhibited in two stages by adding polyacrylate, and copper-sulfur bulk concentrate is obtained through copper-sulfur bulk flotation; and the combined inhibitor and lime are combined for copper-sulfur bulk concentrate to inhibit pyrite flotation copper minerals, copper-sulfur separation under low alkalinity is achieved, and good technical indexes are obtained.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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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