Method for flotation separation of copper sulfide and lead concentrate processed through pre-oxidation

A lead concentrate, copper sulfide technology, applied in flotation, solid separation and other directions, can solve the problems of unfavorable flotation workshop personnel safety, difficult activation of galena, serious environmental pollution, etc., to achieve good flotation effect and reduce energy. Consumption, the effect of simple process method

Active Publication Date: 2014-06-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although dichromate agents have a good inhibitory effect on galena, but the galena inhibited by dichromate is often very difficult to activate, and it is highly toxic, which seriously pollutes the environment and is not conducive to the flotation workshop. Therefore, it is urgent to further develop new non-toxic and efficient beneficiation agents and new flotation processes

Method used

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  • Method for flotation separation of copper sulfide and lead concentrate processed through pre-oxidation
  • Method for flotation separation of copper sulfide and lead concentrate processed through pre-oxidation
  • Method for flotation separation of copper sulfide and lead concentrate processed through pre-oxidation

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Embodiment 1

[0024] Adopt the method of the present invention to carry out separation industrial experiment to certain import copper sulfide lead concentrate. The ore piles are stacked in 300t piles, add 1 / 200 surface passivation agent solid hydrogen peroxide, mix the mixture with the surface cleaning agent calcium oxide at a ratio of 500:1, cover the mineral wool and keep it warm for 12 days to keep the internal temperature of the ore pile at 60°C. The ore that has completed the pretreatment will enter the ball mill and flotation workshop with an ore feeding rate of 100t / d, and add 0.5kg / t ammonium sulfate, 2kg / t sodium sulfide, 400g / t xanthate and 50g / t The black medicine, 16g / t pine alcohol oil, is separated by flotation according to one rough three fine two sweeps, the separated foam product is chalcopyrite, and the tailings are mainly lead concentrate, but contain a certain amount of pyrite , so continue to add 2.0kg / t of sodium carbonate and 150g / t of butyl xanthate, activate and fl...

Embodiment 2

[0028] Adopt the method of the present invention to carry out separation industrial experiment to certain import copper sulfide lead concentrate. The ore heap is stacked in 300t piles, and 1 / 350 surface passivation agent sodium persulfate is added; the mixture is then mixed with surface cleaning agent calcium oxide at a ratio of 650:1, covered with mineral wool and kept warm for 10 days to maintain the internal temperature of the ore heap at 70°C. The pretreated ore will enter the ball mill and flotation workshop with an ore feeding rate of 80t / d, and 1.0kg / t of lime, 300g / t of xanthate, 100g / t of black powder and 20g / t of black powder will be added to the process. MIBC, according to the flotation separation of one rough three fine two sweeps, the separated foam product is chalcopyrite, the tailings are mainly lead concentrate, but it contains a certain amount of sphalerite, so continue to add 800g / t copper sulfate and 200g / t of butyl xanthate, activated and flotation to get ...

Embodiment 3

[0032]Adopt the method of the present invention to carry out separation industrial experiment to certain import copper sulfide lead concentrate. The ore piles are piled up in 300t piles, and 1 / 350 of the surface passivator sodium hypochlorite is added; the mixture is then mixed with the surface cleaning agent calcium oxide at a ratio of 500:1, covered with mineral wool and kept warm for 13 days, and the internal temperature of the ore pile is kept at 80 ℃. The ore that has completed the pretreatment will enter the ball mill and flotation workshop with an ore feeding rate of 100t / d, and add 1.0kg / t of lime, 2.5kg / t of sodium sulfite, 150g / t of ethoxynitrogen, and 10g / t of sulfide into the process. The MIBC is separated by flotation according to one rough three fine three sweeps, and the separated foam product is chalcopyrite, and the tailings are mainly lead concentrate, but it contains a certain amount of pyrite, so continue to add 1.2kg / t Copper sulfate and 200g / t butyl xant...

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Abstract

The invention discloses a method for flotation separation of copper sulfide and lead concentrate processed through pre-oxidation. A new pretreatment flotation technology comprises the steps that pre-oxidation treatment is carried out on the copper sulfide and lead concentrate by using surface passivator, surface cleaning agents and a certain heat-preservation stockpiling method, wherein the copper sulfide and lead concentrate is obtained through flotation; ball milling is carried out on the preprocessed copper sulfide and lead concentrate; a certain number of floatation reagents including regulators, inhibitors, collecting agents and foaming agents are added, and a foam product, namely copper concentrate and tailings, namely lead concentrate are obtained through flotation separation. According to the new pretreatment flotation technology, the used reagents cannot pollute the environment, and energy consumption of production is reduced; compared with economic value of copper sulfide and lead bulk concentrate, the value of products obtained through separation is greatly improved; the content of heavy metal ions in water is low in the production process, the technology is environmentally friendly, equipment operation and technological process operation are easy, and economy and high efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of flotation of copper-lead sulfide concentrate and relates to a method for flotation separation of copper-lead sulfide concentrate after pre-oxidation. Background technique [0002] The separation process of polymetallic sulfide ores such as copper and lead is affected by factors such as complex ore structure properties, fine particle size of mineral embedding, small difference in floatability, and limitations of flotation technology. Often, mixed concentrates of sulfide ores are obtained. The mixed concentrate of sulfide ore generally contains Cu1.0%~8.0%, Pb15%~40%, Fe5%~20%, Ag150~400g / t, Au1~5g / t; some concentrates also contain Zn3%~25% . The mixed concentrate will complicate the smelting process, which is not conducive to the efficient recovery of various valuable metals, and will increase the cost of smelting. The flotation of existing copper sulfide lead concentrate generally adopts the preferentia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/002B03D1/02B03D101/02B03D101/04B03D101/06B03D103/02
Inventor 孙伟唐鸿鹄刘文莉韩海生
Owner CENT SOUTH UNIV
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