Grinding method for improving quality of copper concentrate and reducing impurities

A copper concentrate and ore grinding technology, which is applied in solid separation, grain treatment, flotation, etc., can solve the problems of high impurity content in copper concentrate and poor monomer dissociation effect, so as to increase product benefit value, Particle size distribution and uniform particle size of nodal ball grinding products

Inactive Publication Date: 2019-03-15
HEILONGJIANG DUOBAOSHAN COPPER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the monomer dissociation effect of the existing grinding method is not good, resulting in high impurities in copper concentrate, the present invention provides a grinding method for improving the quality and reducing impurities of copper concentrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides a grinding method for improving the quality and reducing impurities of copper concentrate. After the copper ore enters the ball mill, it is coarsely ground under the action of the coarse grinding medium, and the obtained coarsely ground product enters the hydraulic power through the discharge port of the ball mill. The cyclone is used for grading, and the grit of the hydrocyclone returns to the ball mill to continue coarse grinding. The ore particles that have reached a certain size after coarse grinding enter the slurry mixing tank with the overflow of the hydrocyclone, and enter the roughing operation after stirring. The flotation machine is used for rough separation, and the copper rough concentrate and copper rough separation tailings are obtained respectively after rough separation. The copper rough concentrate enters the sand mill and is finely ground under the action of a fine grinding medium to obtain a certain particle size. Copper conce...

Embodiment 2

[0025] This embodiment provides a grinding method for improving the quality and reducing impurities of copper concentrate. After the copper ore is fed into the ball mill through the pulley, it is coarsely ground under the action of the coarse grinding medium, and the obtained coarsely ground product is produced by the ball mill. The outlet enters the hydrocyclone for grading, and the grit of the hydrocyclone returns to the ball mill to continue coarse grinding. After coarse grinding, the ore particles with a certain particle size enter the slurry mixing tank with the overflow of the hydrocyclone, and after stirring After that, it enters the roughing operation flotation machine for roughing, and after roughing, copper rough concentrate and copper roughing tailings are obtained respectively, and the copper rough concentrate enters the sand mill for fine grinding under the action of fine grinding medium , to obtain copper concentrate products with a certain particle size.

[0026...

Embodiment 3

[0028] This embodiment provides a grinding method for improving the quality and reducing impurities of copper concentrate. After the copper ore is fed into the ball mill through the pulley, it is coarsely ground under the action of the coarse grinding medium, and the obtained coarsely ground product is produced by the ball mill. The outlet enters the hydrocyclone for grading, and the grit of the hydrocyclone returns to the ball mill to continue coarse grinding. After coarse grinding, the ore particles with a certain particle size enter the slurry mixing tank with the overflow of the hydrocyclone, and after stirring After entering the roughing operation flotation machine for roughing, rougher copper concentrate and copper roughing tailings are obtained respectively, and the copper coarse concentrate enters the wormwood mill, and the product model of the wormwood mill It is ALC-500L, equipped with 8 grinding chambers, including the main shaft, 8 stirring discs arranged side by si...

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Abstract

The invention relates to a grinding method for improving the quality of copper concentrate and reducing impurities, belonging to the technical field of non-ferrous metal mineral processing. In order to solve the problem that the monomer dissociation effect of the existing grinding method is not good, high impurity content in the copper concentrate, the grinding method includes the steps of inputting copper ore into a ball mill to perform rough grinding under the action of a rough grinding medium, inputting the roughly ground product into a hydrocyclone for classification, making settling sandreturn to the ball mill for further rough grinding, enabling the ore particles with certain particle size to enter a pulp stirring tank with the overflow of the hydrocyclone, making the particles enter a roughing flotation machine after stirring for roughing, and obtaining copper rough concentrate after roughing and enabling the copper rough concentrate to enter a horizontal sand mill for fine grinding under the action of fine grinding medium, wherein 80% of the copper concentrate product has particle size less than 25 [mu]m. The invention improves the degree of monomer dissociation, obtains copper concentrate with copper > 25%, silicon < 10% and aluminum < 2%, effectively reduces the content of silicon and aluminum impurities in the copper concentrate, improves the concentrate quality andincreases the product benefit value.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal mineral processing, and relates to a grinding method for improving the quality and reducing impurities of copper concentrate. Background technique [0002] Copper sulfide ores in my country generally have the characteristics of poor resource endowment, many types of copper minerals in the ore, fine particle size and different sizes, complex mosaic relationship with gangue minerals, and low raw ore grade. However, the existing beneficiation technology and equipment can no longer fully adapt to the beneficiation of such complex ore resources, especially when the particle size of the mineral distribution is ultra-fine, that is, when 80% of the mineral distribution is less than 15 μm, the traditional grinding method cannot achieve the purpose The monomer dissociation of minerals leads to low beneficiation recovery rate of copper sulfide ore in the flotation process, high silicon and aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C17/10B02C23/14B03D1/00
CPCB02C21/00B02C17/10B02C23/14B03D1/00
Inventor 赖桂华刘春龙吴双桥王金庆黄子令黄一东朱厚生
Owner HEILONGJIANG DUOBAOSHAN COPPER LTD
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