Dressing and smelting method for recovering copper from bonded copper oxide minerals

A technology of copper oxide ore and copper recovery, applied in the direction of improving process efficiency, can solve problems such as high energy consumption, generation of toxic substances, complicated process flow, etc., and achieve low energy consumption, high product quality, and simple process flow Effect

Inactive Publication Date: 2015-10-21
新兴发展集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest advantage of the segregation-flotation method is that it can solve those ores that cannot be treated by conventional mineral processing methods, and can comprehensively recover useful metals in the ore. However, this method still has complex process flow, high energy consumption, and toxicity when dealing with copper oxide ore. Therefore, it is of great practical significance to solve the problem of recovery of valuable metal copper in complex copper oxide ore resources and to propose a highly operable mineral processing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] Step 1. Grinding the bonded copper oxide ore after crushing to obtain mineral powder, then uniformly mixing the mineral powder and water to obtain raw ore pulp; the mass concentration of mineral powder in the raw ore pulp is 36%, and the combined The mass content of copper in the copper oxide ore is 1.08%, the bonded phase occupancy rate of copper in the bonded copper oxide ore is 44.76%, the mass content of iron in the bonded copper oxide ore is not less than 15%, and the particle size of the ore powder is - 0.074mm mineral powder accounts for 60% of the total mass of said mineral powder;

[0028] Step 2, using a wet-type weak magnetic field magnetic separator to carry out weak magnetic separation of the raw ore pulp described in step 1, and separate the weak magnetic separation concentrate and weak magnetic separation tailings, and then shake the weak magnetic separation tailings. The gravity separation concentra...

Embodiment 2

[0035] This embodiment includes the following steps:

[0036] Step 1. Grinding the bonded copper oxide ore after crushing to obtain mineral powder, then uniformly mixing the mineral powder and water to obtain raw ore pulp; the mass concentration of mineral powder in the raw ore pulp is 30%, and the combined The mass content of copper in the copper oxide ore is 1.2%, the bonded phase occupancy rate of copper in the bonded copper oxide ore is 48.36%, the mass content of iron in the bonded copper oxide ore is not less than 15%, and the particle size of the ore powder is - 0.074mm mineral powder accounts for 60% of the total mass of said mineral powder;

[0037]Step 2, using a wet-type weak magnetic field magnetic separator to carry out weak magnetic separation of the raw ore pulp described in step 1, and separate the weak magnetic separation concentrate and weak magnetic separation tailings, and then shake the weak magnetic separation tailings. The gravity separation concentrate...

Embodiment 3

[0044] This embodiment includes the following steps:

[0045] Step 1. Grinding the bonded copper oxide ore after crushing to obtain mineral powder, then uniformly mixing the mineral powder and water to obtain raw ore pulp; the mass concentration of mineral powder in the raw ore pulp is 25%, and the combined The mass content of copper in the copper oxide ore is 2.07%, the bonded phase occupancy rate of copper in the bonded copper oxide ore is 50.91%, the mass content of iron in the bonded copper oxide ore is not less than 15%, and the particle size of the ore powder is - 0.074mm mineral powder accounts for 60% of the total mass of said mineral powder;

[0046] Step 2, using a wet-type weak magnetic field magnetic separator to carry out weak magnetic separation of the raw ore pulp described in step 1, and separate the weak magnetic separation concentrate and weak magnetic separation tailings, and then shake the weak magnetic separation tailings. The gravity separation concentra...

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Abstract

The invention discloses a dressing and smelting method for recovering copper from bonded copper oxide minerals. The method comprises the steps that 1, the bonded copper oxide minerals are smashed and ground and then are mixed with water, and raw ore pulp is obtained; 2, ore dressing is carried out on the raw ore pulp through a low-intensity magnetic separation-gravity separation-high-gradient magnetic separation ore dressing technology; 3, gravity concentrates and high-gradient magnetic concentrates separated out through the ore dressing technology are combined and then filtered to obtain enriched product residues, and primary ore pulp is prepared; 3, sodium hydroxide is added for pretreatment, and pretreatment liquid and pretreatment residues are obtained after filtering; 5, after secondary ore pulp is prepared, acid leaching is carried out on the secondary ore pulp to obtain copper-bearing acid leaching liquid. The recovery rate of copper is not smaller than 80 percent, spongy copper with the mass purity not lower than 90 percent can be obtained through further extraction, and the advantages of being high in ore dressing index, high in product quality, high in operability and simple in technological process are achieved.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy of nonferrous metals, and in particular relates to a dressing and smelting method for recovering copper from bonded copper oxide ore. Background technique [0002] Copper ore can be divided into sulfide ore, mixed ore and oxide ore according to the degree of oxidation, and oxide ore is divided into free copper oxide ore and combined copper oxide ore. Sulfide ore is easy to recover by flotation, and free copper oxide ore can be recovered by flotation or direct leaching, but combined copper oxide ore is difficult to recover by conventional methods. Combined copper oxide ore refers to the chemical analysis process, in the use of H 2 SO 4 -Na 2 SO 3 After leaching, bromine-methanol leaching, and cyanide leaching of sulfide phase and free oxidation phase copper minerals, the remaining copper ore in the leaching residue needs to be dissolved by HF. Copper in this type of copper ore exists i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/00
CPCY02P10/20
Inventor 孔令采黄孟魁翟旭东王明李洁
Owner 新兴发展集团有限公司
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