Flotation and acid leaching process for complex low-grade copper oxide ore

A copper oxide ore, low-grade technology, applied in flotation, chemical instruments and methods, solid separation, etc., can solve problems such as harsh conditions, complex process, and index deterioration, achieve small metal loss, overcome process complexity, reduce The effect of acid consumption

Inactive Publication Date: 2015-12-16
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

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  • Flotation and acid leaching process for complex low-grade copper oxide ore

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Experimental program
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Effect test

Embodiment 1

[0025]Congo complex low-grade copper oxide ore is used, which contains Cu1.2960%, Si25.5600%, Ca0.4160%, Mg13.1200%, Al7.5100%, Fe3.0030%. The results of XRD analysis showed that the main gangue minerals contained in the copper ore were quartz, chlorite, dolomite and talc, and mica and gibbsite were also contained. No single minerals containing copper were detected by XRD. The copper oxide ore raw ore is crushed and screened to a feeding particle size of 3 mm, and the crushed copper oxide ore raw ore particles are then ground with a ball mill to -200 mesh, accounting for 80%. At this time, the copper-containing mineral monomer is fully dissociated; The good pulp is configured into a pulp with a concentration of 30% for flotation operation, adding 7000g / t of sodium sulfide nonahydrate, 1000g / t of amyl xanthate, and 30g / t of 2# oil. After rough selection, carry out a sweep selection, add 2000g / t of sodium sulfide nonahydrate, 300g / t of amyl xanthate, and 14g / t of 2# oil. The mi...

Embodiment 2

[0027] Mabende complex low-grade copper oxide raw ore is used, which contains Cu1.0856%, Si26.2309%, Ca1.8421%, Mg12.4872%, Al5.3285%, Fe2.8046%. XRD analysis results show that the main gangue minerals contained in the copper ore are quartz, chlorite, dolomite, calcite, talc, mica and gibbsite. The copper oxide ore raw ore is crushed and screened to a feeding particle size of 3 mm, and the crushed copper oxide ore raw ore particles are then ground with a ball mill to -200 mesh, accounting for 80%. At this time, the copper-containing mineral monomer is fully dissociated; The good pulp is configured into 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 sulfidation flotation roughing after adjusting. After rough selection, carry out 1 sweep selection, add 1800g / t of sodium sulfide nonahydrate, 350g / t of amyl xanthate, and 12g / t of 2# oil. The middle ore is combined with the ro...

Embodiment 3

[0029] Congo complex low-grade copper oxide ore is used, which contains Cu1.4136%, Si23.0805%, Ca0.5619%, Mg12.6310%, Al7.1889%, Fe3.1521%. XRD analysis results show that the main gangue minerals contained in the copper ore are quartz, calcite, chlorite, dolomite, talc, mica and gibbsite. The copper oxide ore raw ore is crushed and screened to a feeding particle size of 3 mm, and the crushed copper oxide ore raw ore particles are then ground with a ball mill to -200 mesh, accounting for 85%. At this time, the copper-containing mineral monomer is fully dissociated; The good pulp is configured into 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 1 sweep selection, add 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 to obtain copper oxide concentrate; the copper ...

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Abstract

The invention discloses a flotation and acid leaching process for complex low-grade copper oxide ore. The flotation and acid leaching process comprises the following steps that (1) raw low-grade copper oxide ore is crushed and ground to form ore pulp; (2) flotation reagents are added to the ore pulp, and after one-time rough flotation and one-time scavenging are completed, concentrate and tailings of the copper oxide ore are obtained; and (3) after the concentrate of the copper oxide ore is prepared to form ore pulp, concentrated sulfuric acid is added with stirring for leaching, and solid and liquid separation is carried out to obtain copper-containing leach liquor and leached tailings. According to the flotation and acid leaching process, the flotation process and the acid leaching process are combined to treat the low-grade copper oxide ore, the low-grade copper oxide ore is subjected to one time of rough flotation and one time of scavenging in the existence of vulcanizing agents, and chlorite, dolomite, talc and other silicate and carbonate minerals which are high in acid consumption and copper sulphide ore in the low-grade copper oxide ore can be primarily separated; then through combination with the acid leaching process, leaching of copper can be achieved with low acid consumption. The defects that in the prior art, a copper enrichment process for the low-grade copper oxide ore is complex, high in reagent consumption, high in cost and the like are overcome.

Description

technical field [0001] The invention relates to a flotation and acid leaching process for complex low-grade copper oxide ore, in particular to a complex low-grade copper oxide ore sulfidation flotation to enrich copper-containing minerals, and the flotation-obtained concentrate is subjected to stirring acid for sulfuric acid. Combined process of beneficiation and smelting of copper leaching. 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 copper ore resources. About 30% of the total copper metal output is produced by copper oxide ore. of. With the rapid development of my country's economy, the consumption of copper has increased 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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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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