Method for producing copper concentrate by using copper oxide ore or copper slag

A technology for copper oxide ore and copper fine powder, which is applied in the field of copper oxide ore or copper ballast to produce copper fine powder, can solve the problems of waste gas pollution, high cost and low profit, etc.

Inactive Publication Date: 2014-08-06
谷亮
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  • Method for producing copper concentrate by using copper oxide ore or copper slag

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Embodiment Construction

[0021] A specific embodiment of the present invention is to use a jaw crusher to crush a low-grade copper oxide ore with a copper content of 0.8%, and the particle size of the crushed ore is below 50 mm. The crushed ore is then ground to 0.05-0.5mm slag powder by the ore grinding equipment, and the sand pump is transported to the leaching tank. Then the mixed solution of ammoniacal liquor and ammonium bicarbonate (the solubility of ammonia water is 2%, and the solubility of ammonium bicarbonate is 6%) in the mixing tank is used as the ore leaching agent, and the ammoniacal leaching solution is input in the leaching tank, and the leaching The liquid reacts with the ore powder, and the liquid-solid volume ratio is 2:1. The resulting copper complex solution permeates to the bottom of the leaching tank by its own weight, flows out from the drain pipe at the bottom of the mine layer, and enters the liquid collection tank. And keep impurities such as aluminum, cadmium, manganese, ca...

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Abstract

A method for producing copper concentrate by using copper oxide ore or copper slag employs a process comprising ammonia leaching of ore powder, filtering and copper precipitation, and is especially suitable for processing low grade copper oxide or copper slag with copper content of 0.5-5%. First, the ore is ground into an ore powder; then a mixed solution of ammonia and ammonium hydrogen carbonate solution or a mixed solution of sodium hydroxide and ammonium hydrogen carbonate as a leaching agent reacts with the ore powder, so that the copper in the ore enters into the solution in the form of a copper ammonia complex and impurities including aluminum, cadmium, manganese, calcium and silicon are kept in the slag, thereby realizing the separation of copper and impurities; and then one or more selected from sulfide ammonia, sodium sulfide and potassium sulfide are used as a precipitator for copper precipitation to produce copper concentrate, the copper concentrate is filtered to obtain the copper concentrate product after drying, and the filtrate returns to a leaching ore tank for recycling. The method has the advantages of normal temperature operation, low energy consumption, good quality, short flow and simple clean liquid operation, and can effectively use the copper resources to be developed.

Description

technical field [0001] The method for producing copper fine powder with copper oxide ore or copper slag involved in the present invention adopts the process of powder ore-ammonia leaching-filtration-copper precipitation to produce copper fine powder, which is especially suitable for processing low-grade oxidation with a copper content of 0.5-5%. Copper ore or copper ballast. The method belongs to the field of chemical beneficiation engineering in hydrometallurgy. [0002] Copper fine powder is one of the main raw materials for the production of metal copper. The main raw material for copper production in my country - copper fine powder is produced by flotation process with copper sulfide ore. However, with the massive development of primary ore, mineral resources are becoming increasingly tense. At the same time, in the process of developing copper sulfide ore and high-grade copper oxide ore, a large amount of low-grade copper oxide ore and copper slag are discarded as waste r...

Claims

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Application Information

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IPC IPC(8): C22B3/12C22B3/44C22B15/00
Inventor 谷亮
Owner 谷亮
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