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Preparation method of high grade copper oxide concentrate

A copper oxide medium ore and copper oxide technology, which is applied in the field of preparation of high-grade copper oxide concentrate, can solve the problems of low copper grade, high content of impurities in gangue minerals such as calcium and magnesium, and achieve reduction of electric energy, increase of smelting recovery rate, Effects with a wide range of applications

Active Publication Date: 2014-06-11
HUNAN RES INST FOR NONFERROUS METALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a method for preparing high-grade copper oxide concentrate, so as to solve the technical problems of high impurity content of gangue minerals such as calcium and magnesium and low copper grade in the prior art when preparing copper oxide concentrate

Method used

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  • Preparation method of high grade copper oxide concentrate
  • Preparation method of high grade copper oxide concentrate
  • Preparation method of high grade copper oxide concentrate

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Embodiment approach

[0024] According to a typical implementation of the present invention, the preparation method of the high-grade copper oxide concentrate is as follows: figure 1 As shown, it includes complex copper oxide raw ore grinding, copper sulfide flotation and copper oxide flotation, wherein copper oxide flotation includes roughing and concentration, roughing includes copper sulfide flotation tailings obtained from copper sulfide flotation Add flotation reagents to the crude concentrate, mix, stir, and separate to obtain rough concentrate and rougher tailings; and beneficiation includes adding gangue mineral inhibitors to the rough concentrate for stirring. sodium sulfonate.

[0025] The present invention adopts processes such as complex copper oxide raw ore grinding, copper sulfide flotation and copper oxide flotation, and carries out copper oxide flotation by adding flotation reagents to copper sulfide flotation tailings. Under the action of flotation agents, it adheres to the foam a...

Embodiment 1

[0046] Copper sulfide flotation tailings, containing 3.26% copper.

[0047] Copper sulfide flotation tailings roughing: put 1 ton of copper sulfide flotation tailings slurry into the flotation tank for roughing, add 500g sodium sulfide, 80g pentaxanthate, 50g hydroxamic acid and 30g pine Alcohol oil, to obtain copper oxide roughing tailings and foamy copper oxide rough concentrate floating on it; to obtain copper oxide rough concentrate, the copper grade in copper oxide rough concentrate is 11.86%, SiO 2 The content of MgO is 25.36%, the content of MgO is 10.29%, and the content of CaO is 13.84%.

[0048] Four times of beneficiation of rough concentrate: add 60g of oxalic acid as an inhibitor to the foamy rough concentrate while stirring, and carry out copper beneficiation operation; obtain the first concentrate ore and the first middle ore. While stirring, add 30g of oxalic acid to the first concentration ore to carry out the second copper concentration operation to obtain t...

Embodiment 2

[0054] Copper sulfide flotation tailings, containing 1.42% copper. The process difference with embodiment 1 is:

[0055] Add 800g of sodium sulfide, 120g of pentaxanthate, 80g of hydroxamic acid and 50g of terpineol oil during roughing of copper sulfide flotation tailings. 2 The content of MgO is 30.44%, the content of MgO is 8.91%, and the content of CaO is 11.86%.

[0056] Four times of beneficiation of rough concentrate: add 150g of oxalic acid in the first beneficiation operation; add 75g of oxalic acid in the second beneficiation step; Sodium bromoethyl sulfonate, and finally get high-grade copper concentrate and selected No. 4 middle ore.

[0057] The high-grade copper oxide concentrate has a recovery rate of 71.25%, grading 50.76% copper, SiO 2 The content of CaO is 1.02%, the content of CaO is 0.76%, and the content of MgO is 0.91%.

[0058] SiO in blister copper ore, copper concentrate 1 concentrate, copper concentrate 2 concentrate, copper concentrate 3 concentra...

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Abstract

The invention discloses a preparation method of high grade copper oxide concentrate. The preparation method sequentially comprises complex copper oxide crude ore grinding, copper sulphide flotation and copper oxide flotation. The copper oxide flotation comprises rough flotation and fine flotation, wherein the rough flotation includes that flotation reagents are added into tailings of copper sulphide flotation after the copper sulphide flotation, and rough concentrate and rougher tailings are obtained after mixing, stirring and separating. The fine flotation includes that gangue mineral depressants are added into the rough concentrate to be stirred, and the gangue mineral depressants are halogenate ethyl sodium sulfonate. According to the preparation method, in the fine flotation process, the halogenate ethyl sodium sulfonate is added to serve as the depressants, impurity gangue minerals are water loving, and therefore the separating effect of target minerals and the impurity gangue minerals is improved in the fine flotation process. The method drastically reduces contents of silica, calcium oxide, magnesium oxide and other impurity gangue minerals, and obtains the high grade copper oxide concentrate. The mineral processing process is low in cost, and simple and feasible in operation.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for preparing high-grade copper oxide concentrate. Background technique [0002] In my country's copper resources, copper oxide ore accounts for about one-third of copper ore resources. Most copper deposits have oxidation zones, and some have even formed independent large and medium-sized copper oxide deposits. With copper sulfide With the depletion of ore resources and the increasing demand for copper metal in my country, it is of great significance to efficiently develop and utilize copper oxide ore resources. [0003] The treatment process of copper oxide mainly has the following categories: 1. Direct leaching, using hydrometallurgy to produce copper; 3. Copper concentrate (about 18%-25% copper content) is produced by beneficiation, which is then reduced and smelted in an electric furnace to produce blister copper. Under the same circumstances, if relative...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D101/04B03D101/06
Inventor 陈代雄李国民薛伟李宋江杨建文张汉彪李晓东王华祁忠旭林荣跃胡波曾惠明董艳红
Owner HUNAN RES INST FOR NONFERROUS METALS
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