A method for activated flotation of sulfur in copper tailings of copper sulfide sulfur ore dressing

A technology for beneficiation of copper tailings and copper sulfide, applied in flotation, solid separation, etc., can solve problems such as excessive ammonia and nitrogen ion content, increased mine costs, increased beneficiation costs, etc., to eliminate pollution, reduce production costs, and save The effect of chemical cost and environmental treatment cost

Active Publication Date: 2021-04-20
YUXI MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing process technology, the selected sulfur activators include sulfuric acid, ammonium sulfate, ammonium bicarbonate, etc. The addition of these agents will increase the cost of mineral processing on the one hand, and on the other hand will cause the ammonia and nitrogen ion content in the flotation tail water to exceed the standard , causing pollution to the environment
[0004] For mines with high sulfur content, some mined ores with low copper content and high sulfur content will be stockpiled during the mining process, and acid-containing wastewater will be generated under the erosion of rainwater, and the treatment of this part of wastewater will be discharged It will increase the cost of the mine and cause pollution to the environment

Method used

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  • A method for activated flotation of sulfur in copper tailings of copper sulfide sulfur ore dressing
  • A method for activated flotation of sulfur in copper tailings of copper sulfide sulfur ore dressing
  • A method for activated flotation of sulfur in copper tailings of copper sulfide sulfur ore dressing

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Effect test

Embodiment 1

[0033] A method for activated flotation of sulfur in copper sulfide ore beneficiation copper tailings, comprising the following steps:

[0034] Step (1), take copper sulfide sulfide ore for grinding, add calcium oxide at a ratio of 7000g / t before grinding to make the pH value of the flotation pulp reach 11.5, and grind until the particle size is less than 0.074mm. Take 70% of the quality of copper sulfide sulfur ore to obtain raw ore grinding products;

[0035] Step (2), adding water to the raw ore grinding product obtained in step (1), until the mass percentage concentration of the pulp [mineral amount / (mineral amount+water amount)] is 30%;

[0036] Step (3), adding sodium sulfide, butyl xanthate and 2# oil to the pulp obtained in step (2) to carry out copper sulfide flotation to obtain copper rough concentrate and copper beneficiation tailings;

[0037] Wherein, the amount of sodium sulfide added is 140g / ton, the amount of butyl xanthate is 30g / ton, and the amount of 2# oil...

Embodiment 2

[0043] A method for activated flotation of sulfur in copper sulfide ore beneficiation copper tailings, comprising the following steps:

[0044] Step (1), take copper sulfide sulfide ore for grinding, add calcium oxide at a ratio of 7000g / t before grinding to make the pH value of the flotation pulp reach 11.5, and grind until the particle size is less than 0.074mm. Take 70% of the quality of copper sulfide sulfur ore to obtain raw ore grinding products;

[0045] Step (2), adding water to the raw ore grinding product obtained in step (1), until the mass percentage concentration of the pulp [mineral amount / (mineral amount+water amount)] is 30%;

[0046] Step (3), adding sodium sulfide, butyl xanthate and 2# oil to the pulp obtained in step (2) to carry out copper sulfide flotation to obtain copper coarse concentrate and copper beneficiation tailings;

[0047] Wherein, the amount of sodium sulfide added is 140g / ton, the amount of butyl xanthate is 30g / ton, and the amount of 2# oi...

Embodiment 3

[0053] A method for activated flotation of sulfur in copper sulfide ore beneficiation copper tailings, comprising the following steps:

[0054] Step (1), take copper sulfide sulfide ore for grinding, add calcium oxide at a ratio of 7000g / t before grinding to make the pH value of the flotation pulp reach 11.5, and grind until the particle size is less than 0.074mm. Take 70% of the quality of copper sulfide sulfur ore to obtain raw ore grinding products;

[0055] Step (2), adding water to the raw ore grinding product obtained in step (1), until the mass percentage concentration of the pulp [mineral amount / (mineral amount+water amount)] is 30%;

[0056] Step (3), adding sodium sulfide, butyl xanthate and 2# oil to the pulp obtained in step (2) to carry out copper sulfide flotation to obtain copper coarse concentrate and copper beneficiation tailings;

[0057] Wherein, the amount of sodium sulfide added is 140g / ton, the amount of butyl xanthate is 30g / ton, and the amount of 2# oi...

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Abstract

The invention relates to a method for activated flotation of sulfur in copper tailings of copper sulfide-sulfur ore beneficiation, and belongs to the technical field of non-ferrous metal beneficiation. The method is to grind copper sulfide sulfur ore, add calcium oxide before grinding to make the pH value of the flotation slurry reach 11.5, and grind the ore until the particle size is less than 0.074mm. , add water afterwards to the mass percent concentration of pulp is 30%; Add 140g / ton of sodium sulfide, 30g / ton of butyl xanthate and 25g / ton of 2# oil in the obtained pulp to carry out copper sulfide flotation, obtain copper rough concentrate and Copper beneficiation tailings; add acid-containing wastewater to the copper beneficiation tailings until the pH value of the pulp is 9.0~9.5; add 60g / ton butyl xanthate and 20g / ton 2# oil to the obtained pulp, and carry out sulfur flotation to obtain sulfur concentrate. The method solves the problem of rational utilization of mine acid-containing wastewater, reduces the production cost of the mine, and reduces the pollution of the mine to the natural environment.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal beneficiation, and in particular relates to a method for activated flotation of sulfur in copper sulfide ore beneficiation tailings. Background technique [0002] The mine currently has a large number of low-grade copper-sulfur ores stockpiled in the mining area, and there are more low-grade copper-sulfur ores in the stope. In addition to copper, this type of ore also contains a large amount of pyrite-based sulfide minerals. Generally, after flotation of copper minerals under alkaline conditions, the sulfur minerals must be activated to recover sulfur by flotation. [0003] In the existing process technology, the selected sulfur activators include sulfuric acid, ammonium sulfate, ammonium bicarbonate, etc. The addition of these agents will increase the cost of mineral processing on the one hand, and on the other hand will cause the ammonia and nitrogen ion content in the flotation tail wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D101/00B03D103/02
CPCB03D1/018B03D2201/00B03D2203/02
Inventor 董家平骆忠赵继春何旭
Owner YUXI MINING
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