Treatment method for copper concentrate leached residues

A treatment method and technology for leaching slag, applied in solid separation, flotation and other directions, can solve the problems of waste of copper resources, waste of leaching slag, etc., and achieve the effects of high recovery rate, reduction of leaching cost, and avoidance of waste.

Inactive Publication Date: 2013-07-24
HUNAN RES INST FOR NONFERROUS METALS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a treatment method for leaching slag of copper concentrate to solve the problem of waste of leaching slag and copper resource waste caused by difficult leaching of copper sulfide minerals in low-grade complex copper minerals existing in the prior art technical problem

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  • Treatment method for copper concentrate leached residues
  • Treatment method for copper concentrate leached residues
  • Treatment method for copper concentrate leached residues

Examples

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Effect test

Embodiment approach

[0025] According to a typical implementation of the present invention, the processing method of the copper concentrate leaching slag is as follows: figure 1 as shown, figure 1 A schematic flow chart of the recovery process of copper concentrate leaching slag is shown. The treatment method includes grinding and preparing pulp and flotation treatment steps, wherein grinding and preparing pulp refers to grinding the mixture of copper concentrate leaching slag and water to prepare pulp, and the particles with a particle size of less than 0.074mm in the pulp account for 90-95% of the total particle weight. %; The flotation process includes rough selection and fine selection in turn.

[0026] The present invention effectively recovers copper sulfide minerals that are relatively difficult to leach and easy to float in copper minerals by adopting processes such as grinding, roughing and beneficiation of the copper concentrate leaching slag, so that the copper sulfide minerals in the ...

Embodiment 1

[0044] Raw material: leaching slag of a mixed copper concentrate in the Democratic Republic of the Congo (containing 13.28% copper)

[0045] Add water to one ton of leaching slag for wet ball milling. When particles with a particle size of less than 0.074mm account for 90% of the total particle weight, adjust the mass percentage concentration of the pulp to 25%, send the pulp into the flotation tank, and add it while stirring. Add 300 grams of sodium carbonate to adjust the pH value of the whole pulp to be 8, add 100 grams of amyl xanthate ethyl formate and 28 grams of terpineol oil to the pulp while stirring, carry out roughing, and the flotation time is 3 minutes. Finally, coarse concentrate and roughing tailings are obtained.

[0046] The roughing tailings are carried out in continuous 5-stage sweeping, wherein 40 grams, 40 grams and 20 grams of amyl xanthate ethyl formate are added successively in copper sweeping one, copper sweeping two and copper sweeping three steps, lo...

Embodiment 2

[0052] Raw material: leaching slag from a mixed copper concentrate in Yunnan (containing 6.85% copper)

[0053] Add water to one ton of leaching slag for wet ball milling. When the particles with a particle size of less than 0.074mm account for 95% of the total particle weight, add water to make the pulp concentration 35%, send the pulp into the flotation tank, and add regulator while stirring 500 grams of sodium carbonate adjust the pH value of the whole pulp to be 10, while stirring, add 150 grams of amyl xanthate ethyl formate and 42 grams of terpineol oil to the pulp at the same time, carry out roughing, the flotation time is 5 minutes, and finally Obtain rough concentrate and roughing tailings.

[0054]Rougher tailings are carried out continuously 5 stages of sweeping, wherein copper sweeping one, copper sweeping two and copper sweeping three steps add 60 grams, 60 grams and 40 grams of amyl xanthate ethyl formate successively, all Add 28 grams of terpineol oil, and the ...

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Abstract

The invention discloses a treatment method for copper concentrate leached residues. The method comprises the following steps of grinding and preparing ore pulp, and grinding a mixture of the copper concentrate leached residues and water to prepare the ore pulp, wherein particles of which particle sizes are smaller than 0.074mm in the ore pulp account for 90-95 percent of total particle weight; and performing flotation treatment on the ore pulp. Through adopting an ore grinding process, a rough concentration process and a refined concentration on the copper concentrate leached residues, copper sulfide ore which is relatively difficult to leach but is easy to float in copper ore are effectively recovered; copper in finally obtained copper concentrate reaches up to 69.86 percent in grade; and the recovery rate of the copper reaches up to 98.72 percent. For oxygen and sulfur mixed copper ore which is changeable in property, the process flows are very strong in adaptability. The leaching cost is effectively reduced, and the recovery rate of the copper is improved. Through treating low-grade copper concentrate leached residues, the copper content in finally obtained tailings is extremely low, and the waste of copper resources is avoided. The treatment method for the copper concentrate leached residues is simple in process, low in energy consumption, small in investment and high in recovery rate.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for treating leaching slag of copper concentrate. Background technique [0002] According to the Reserve Department of the Ministry of Land and Resources, the country has 19.4186 million tons of copper reserves (metal content). Most copper mines have oxidation zones on the upper part, and some have even formed independent large and medium-sized copper oxide deposits. Among copper resources in my country, oxidation Copper mines account for about 1 / 4 (about 5 million tons). However, due to the extremely complex physical and chemical properties of the oxidation zone, large mud content, high copper content, uneven distribution of fine particles, mixed oxygen and sulfur, and coexistence of various minerals, the single flotation method leads to a relatively low copper recovery rate. Low, high production costs, it is difficult to meet the needs of the current complex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/00
Inventor 李宋江陈代雄李国民杨建文张汉彪薛伟王华刘锡桂林荣跃祁忠旭李晓东胡波董艳红
Owner HUNAN RES INST FOR NONFERROUS METALS
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