Partial zinc blende activated complex copper-lead-zinc sulfide ore differential flotation separation method

A sphalerite and sulfide ore technology, applied in flotation, solid separation, etc., can solve the problems of low recovery rate of copper, lead and zinc, large dosage of chemicals, high lead-zinc mutual content, etc., to improve the beneficiation index and the total recovery rate , the effect of quality improvement

Active Publication Date: 2018-01-16
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Mixed flotation, that is, flotation of copper, lead and zinc as a whole, and then sequentially separate copper, lead and zinc. This process is suitable for sulfide ores with low total content of sulfide minerals; Mineral flotation, this process is suitable for primary sulfide ore with high grade and coarse particle size, the process is stable and reliable, and the index is stable, it is the mainstream process in China at present; partial mixed flotation, that is, the copper and lead minerals are firstly treated as a whole After flotation, copper and lead are separated, copper and lead tailings are floated and th...

Method used

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  • Partial zinc blende activated complex copper-lead-zinc sulfide ore differential flotation separation method

Examples

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Effect test

Embodiment 1

[0036] A copper sulfide lead-zinc mine in Jiangxi contains 2.62% copper, 4.12% zinc and 0.71% lead. Using the process of the present invention, add 300g / t sodium sulfide, 500g / t sodium sulfite, and 3200g / t zinc sulfate to the raw ore and grind it to -0.074mm to account for 88%, use sodium hydroxide to adjust the pH to 7, add 100g / tZ105, 15g / t No.2 oil, differential flotation for 6 minutes to obtain copper-lead-zinc mixed concentrate. Then add 150g / t sodium sulfide, 250g / t sodium sulfite, 1600g / t zinc sulfate to the tailings, adjust the pH to 10-11 with sodium hydroxide, add 50g / t Z105 and 7g / t No. 2 oil, flotation for 8 minutes to select Produce high-grade copper concentrate. Final beneficiation indicators: the grades of copper, lead and zinc in the mixed concentrate are 5.32%, 3.45%, and 20.16%, respectively. The copper grade in the copper concentrate is 19.09%, and the content of lead and zinc is 5.54% (1.73%Pb+3.81%Zn). The total recoveries of copper, lead and zinc elem...

Embodiment 2

[0044] A flotation test was carried out on a certain copper sulfide lead-zinc ore in Yunnan by the method of the present invention. The raw ore contains 1.88% copper and 3.36% zinc. The process is as follows: add 1000g / t sodium sulfite and 4000g / t zinc sulfate to the raw ore and grind the ore to -0.074mm to account for 80%, use lime to adjust the pH to 8, add 50g / t butyl xanthate, 30g / t No. 2 oil, differential Flotation for 2 minutes to obtain copper-lead-zinc mixed concentrate. Then add 500g / t sodium sulfite and 2000g / t zinc sulfate to the tailings, adjust the pH to 9-10 with sodium hydroxide, add 25g / t butyl xanthate and 15g / t No. 2 oil, and select high-grade by flotation for 10 minutes copper concentrate. Final beneficiation indicators: the grades of copper, lead and zinc in the mixed concentrate are 4.15% and 18.18% respectively. The copper grade in the copper concentrate is 16.67%, and the zinc content is 6.98%. The total recoveries of copper and zinc elements are 84....

Embodiment 3

[0052] The method of the invention is used to carry out the flotation test on the copper sulfide lead-zinc ore. The raw ore contains 3.65% copper, 3.92% zinc, and 1.79% lead. The process is as follows: add 500g / t sodium sulfide and 1800g / t zinc sulfate to the raw ore and grind the ore to -0.074mm to account for 90%, use lime to adjust the pH to 6, add 100g / t ethyl disulfide nitrogen, 20g / t No. 2 oil, differential flotation for 8 minutes to obtain copper-lead-zinc mixed concentrate. Then add 250g / t sodium sulfide, sodium sulfite, 900g / t zinc sulfate to the tailings, adjust the pH to 10-11 with lime, add 50g / t ethyl disulfide and 10g / t No. grade copper concentrate. Final beneficiation indicators: the grades of copper, lead and zinc in the mixed concentrate are 7.65%, 12.37%, and 19.24%, respectively. The copper grade in the copper concentrate is 22.09%, and the content of lead and zinc is 5.96% (2.33%+3.63%). The total recoveries of copper, lead and zinc elements are 76.65%, ...

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Abstract

The invention discloses a partial zinc blende activated complex copper-lead-zinc sulfide ore differential flotation separation method. The method comprises the steps that by adding a flotation rate regulator and a pH regulator, the flotation rate of copper pyrites and non-activated zinc blende is lowered, the activated zinc blende flotation rate is increased, and bulk concentrate adopting the activated zinc blende as the main component is obtained through differential flotation; on the basis of the flotation rate regulator and the pH regulator, the flotation rate difference between the copperpyrites and the non-activated zinc blende is increased, high-grade copper concentrate is obtained through flotation separation preferentially, and zinc blende and a small amount of galena can continueto be recycled in nonfloat. The method achieves mineral individuation and differential flotation separation, high-grade copper concentrate can be obtained, meanwhile, the comprehensive recycling rateof copper zinc in sample ore is increased, the flow technology is easy to implement, the economic benefits are remarkable, and comprehensive recycling of hard-dressing complex copper-lead-zinc sulfide ore resources is effectively achieved.

Description

technical field [0001] The invention relates to a beneficiation method for activating complex copper-lead-zinc sulfide ore by part of sphalerite, in particular to a method for separating chalcopyrite and sphalerite through differential flotation, which belongs to the field of mineral beneficiation. Background technique [0002] The separation of complex polymetallic sulfide ores of copper, lead and zinc has always been one of the most difficult topics in mineral processing. The main reason for this phenomenon is that copper-lead-zinc polymetallic sulfide ores have many mineral components, diverse structures, complex mineral embedding characteristics, and obvious characteristics such as encapsulation and metasomatism. Often useful minerals are densely symbiotic, and the embedding particle sizes are different. A greater degree of oxidation leads to muddying. Copper-lead-zinc and other polymetallic sulfide ores contain some secondary copper minerals, and at the same time, Cu i...

Claims

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Application Information

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IPC IPC(8): B03B9/00B03D1/018B03D1/016B03D1/002B03D101/02B03D101/04B03D103/04
Inventor 刘润清唐鸿鹄陈宇枫王丽孙伟胡岳华
Owner CENT SOUTH UNIV
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