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A flotation acid leaching process for complex low-grade copper oxide ore

A low-grade copper oxide ore technology, applied in flotation, chemical instruments and methods, solid separation, etc., can solve the problems of unsuitable processing of low-grade ore, difficulty in entering the industrial chain, and difficulty in large-scale practical application, etc., to achieve Shorter leaching time, lower cost, less metal loss

Inactive Publication Date: 2017-12-12
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above various methods have the following disadvantages: (1) the process is complicated, the conditions are harsh, the cost is high, and it is difficult to apply it on a large scale; (2) some processes are not suitable for processing low-grade ores, and the indicators will deteriorate when processing low-grade ores. It is difficult to enter the industrial chain; (3) Many processes use a large amount of chemicals, some of which are poisonous, which is a great challenge to environmental pollution control and production safety management

Method used

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  • A flotation acid leaching process for complex low-grade copper oxide ore

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Embodiment 1

[0025]The original ore of complex low-grade copper oxide ore in Congo is used, which contains 1.2960% Cu, 25.5600% Si, 0.4160% Ca, 13.1200% Mg, 7.5100% Al, and 3.0030% Fe. The results of XRD analysis show that the main gangue minerals contained in the copper ore are quartz, chlorite, dolomite and talc, and also contain mica and gibbsite, and no individual copper-containing minerals were detected by XRD. The raw copper oxide ore is crushed and screened to a feeding particle size of 3 mm, and the crushed copper oxide raw ore particles are then ground by a ball mill to -200 mesh, accounting for 80%, at which time the copper-containing mineral monomer is fully dissociated; A good pulp is configured as a pulp with a concentration of 30% for flotation operation, adding 7000g / t of sodium sulfide nonahydrate, 1000g / t of amyl xanthate, 30g / t of 2# oil, and performing roughing of sulfidation flotation after pulping. After rough selection, sweeping is carried out once, adding 2000g / t of ...

Embodiment 2

[0027] Mabende complex low-grade copper oxide ore is used, which contains Cu 1.0856%, Si 26.2309%, Ca 1.8421%, Mg 12.4872%, Al 5.3285%, Fe 2.8046%. The results of XRD analysis show that the main gangue minerals contained in the copper deposit are quartz, chlorite, dolomite, calcite, talc, mica and gibbsite. The raw copper oxide ore is crushed and screened to a feeding particle size of 3 mm, and the crushed copper oxide raw ore particles are then ground by a ball mill to -200 mesh, accounting for 80%, at which time the copper-containing mineral monomer is fully dissociated; A good pulp is configured as a pulp with a concentration of 30% for flotation operation, adding 7000g / t of sodium sulfide nonahydrate, 1500g / t of amyl xanthate, 30g / t of 2# oil, and performing roughing of sulfidation flotation after pulping. After rough selection, sweeping is carried out once, adding 1800g / t of sodium sulfide nonahydrate, 350g / t of amyl xanthate, and 12g / t of 2# oil. The medium ore is combi...

Embodiment 3

[0029] The original ore of complex low-grade copper oxide ore in Congo is used, which contains 1.4136% Cu, 23.0805% Si, 0.5619% Ca, 12.6310% Mg, 7.1889% Al, and 3.1521% Fe. The results of XRD analysis show that the main gangue minerals contained in the copper deposit are quartz, calcite, chlorite, dolomite, talc, mica and gibbsite. The raw copper oxide ore is crushed and screened to a feeding particle size of 3 mm, and the crushed copper oxide raw ore particles are then ground by a ball mill to -200 mesh, accounting for 85%, at which time the copper-containing mineral monomers are fully dissociated; The good pulp is configured into a pulp with a concentration of 40% for flotation operation, adding 8000g / t of sodium sulfide nonahydrate, 1200g / t of amyl xanthate, and 25g / t of 2# oil. After selection, carry out one sweeping selection, adding 1500g / t of sodium sulfide nonahydrate, 400g / t of amyl xanthate, and 9g / t of 2# oil. The middle ore is combined with the rough concentrate t...

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Abstract

The invention discloses a flotation acid leaching process of complex low-grade copper oxide ore, which comprises the following steps: (1) the raw ore of low-grade copper oxide ore is crushed and ground, and prepared into pulp; Add flotation reagents to the mixture, and perform a roughing and sweeping to obtain copper oxide ore concentrate and tailings; (3) After the obtained copper oxide ore concentrate is made into pulp, add concentrated sulfuric acid to leaching under stirring conditions, solidified Liquid separation to obtain copper-containing leaching solution and leaching tailings. This process combines flotation and acid leaching processes to treat low-grade copper oxide ore. Preliminary separation of silicate and carbonate minerals such as chlorite, dolomite, and talc in low-grade copper oxide ore with large acid consumption from copper sulfide ore, combined with acid leaching process, under low acid consumption That is, the leaching of copper can be realized, and the defects of complex copper enrichment process of low-grade copper oxide ore in the prior art, large consumption of reagents, high cost and the like are overcome.

Description

technical field [0001] The invention relates to a flotation acid leaching process of complex low-grade copper oxide ore, specifically a sulfidation flotation of complex low-grade copper oxide ore to enrich copper-containing minerals, and stirring the concentrated ore obtained by flotation with sulfuric acid. Combined separation and smelting process for leaching copper. Background technique [0002] my country is rich in copper oxide ore resources. It is conservatively estimated that there are more than 10 million tons of metal reserves in the country, accounting for about 10% to 15% of the total reserves of copper ore resources, and about 30% of the total annual copper metal output is produced by copper oxide ore. of. With the rapid development of my country's economy, the consumption of copper is increasing year by year, resulting in the gradual reduction of high-grade copper sulfide ore resources. The development of copper oxide ore has attracted great attention, especiall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03D1/00
Inventor 王军胡明浩陶浪赵红波肖巍甘晓文覃文庆姜涛胡岳华邱冠周
Owner CENT SOUTH UNIV
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