Novel graded preliminary dressing-mixing and grinding-flotation process for improving quality of copper concentrates

A technology for copper concentrate and stirring mill, which is applied in the new process field of classification pre-selection-stirring mill-flotation for upgrading copper concentrate, can solve the disadvantage of comprehensive recovery of rare and precious associated elements, increase the dosage of inhibitors such as lime, and the dosage of lime It can reduce the cost of beneficiation, reduce the cost of flotation, and reduce the cost of grinding.

Inactive Publication Date: 2019-12-13
JIANGXI COPPER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Taking a porphyry copper mine as an example, in order to produce high-grade copper concentrate, the most common method used by the concentrator is to increase the dosage of inhibitors such as lime. The comprehensive recovery of associated rare and precious associated elements such as molybdenum, gold, and silver is unfavorable
Production practice has proved that the increase in the amount of lime will significantly inhibit the collection of associated elements such as molybdenum, gold, and silver, resulting in a decrease in the recovery rate

Method used

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  • Novel graded preliminary dressing-mixing and grinding-flotation process for improving quality of copper concentrates
  • Novel graded preliminary dressing-mixing and grinding-flotation process for improving quality of copper concentrates
  • Novel graded preliminary dressing-mixing and grinding-flotation process for improving quality of copper concentrates

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Effect test

Embodiment 1

[0050]The copper grade in the copper concentrate in this embodiment is 21.06%, the associated gold and silver contents are 4.16g / t and 42.30g / t respectively, the copper minerals are mainly chalcopyrite, and the impurity minerals are mainly pyrite. There is also a small amount of gangue minerals with a fineness of -0.038mm, accounting for about 54.36%. The concrete steps that adopt technique of the present invention are as follows:

[0051] (1) The industrial test took the flotation copper concentrate pulp after the separation of copper and molybdenum on site. The pulp concentration was 42.50%. A Φ30m thickener was used for concentration, dehydration and drug removal. The concentration of the underflow of the thickener was 65.40%.

[0052] (2) Add water to the underflow of the thickener and stir to adjust the pulp, and adjust the pulp concentration to 28%.

[0053] (3) After the copper concentrate slurry is adjusted, it is pumped into a Φ150mm hydrocyclone for classification a...

Embodiment 2

[0064] The copper grade in the copper concentrate in this embodiment is 24.14%, the associated gold and silver contents are 3.42g / t and 36.90g / t respectively, the copper minerals are mainly chalcopyrite, and the impurity minerals are mainly pyrite. There is also a small amount of gangue minerals with a fineness of -0.038mm, accounting for about 56.07%. The concrete steps that adopt technique of the present invention are as follows:

[0065] (1) The industrial test took the flotation copper concentrate pulp after the separation of copper and molybdenum on site. The pulp concentration was 44.25%. A Φ30m thickener was used for concentration, dehydration and drug removal. The concentration of the underflow of the thickener was 67.20%.

[0066] (2) Add water to the underflow of the thickener and stir to adjust the pulp, and adjust the pulp concentration to 28%.

[0067] (3) After the copper concentrate slurry is adjusted, it is pumped into a Φ150mm hydrocyclone for classification ...

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Abstract

The invention discloses a novel graded preliminary dressing-mixing and grinding-flotation process for improving the quality of copper concentrates. The process takes flotation copper concentrates as araw material, and comprises the following steps of concentrating to remove reagents, performing graded preliminary dressing, mixing and grinding ore, and performing copper flotation. Most residual dressing reagents in copper concentrate pulp are removed through concentration, and by using the characteristics that the copper concentrates are fine in grain and copper is enriched in fine fractions,the fine-fraction high-quality copper concentrations are obtained through graded preliminary separation by a cyclone, and settling sand is re-ground and re-dressed to realize the effective separationof impurity minerals and copper minerals, so that the purpose of improving the quality of the copper concentrations is achieved. The ore dressing process for improving quality of the copper concentrations is simple and effective, and has great significance in raising copper concentration sale price and reducing transportation cost. The process has the characteristics of simple flow, stable index and remarkable quality improving effect, and is beneficial for being applied and popularized in similar mines.

Description

technical field [0001] The invention relates to the field of non-ferrous metal beneficiation technology, in particular to a new process of grading pre-selection-stirring mill-flotation for upgrading the quality of copper concentrate. [0002] technical background [0003] Improving the grade of copper concentrate for smelting is conducive to reducing transportation costs, reducing raw materials and power consumption, reducing energy consumption, saving construction investment costs, etc., and is of great significance to reducing copper smelting costs and increasing the recovery rate of copper smelting. Therefore, copper smelters generally require copper mines to produce higher-grade copper concentrates. [0004] Taking a porphyry copper mine as an example, in order to produce high-grade copper concentrate, the most common method used by the concentrator is to increase the dosage of inhibitors such as lime. The comprehensive recovery of associated rare and precious associated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 卢涛吴启明张红华郑德雪童佳诚戴智飞曾令明林清泉
Owner JIANGXI COPPER CORP
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