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Efficient flotation method for copper ore containing superfine graphite

An ultra-fine graphite and flotation technology, applied in flotation, solid separation, etc., can solve problems such as low production recovery rate, low copper concentrate grade, poor suppression effect, etc., and achieve stable production process and reduce The effect of producing drug consumption and improving the utilization rate

Active Publication Date: 2020-09-22
CHINA MINMETALS CHANGSHA MINING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In recent years, some research teams have proposed to use organic substances such as sodium lignosulfonate to suppress fine-grained organic carbon and flotation copper minerals, but the suppression effect is not good, and the influence of fine-grained organic carbon on copper flotation has been found in production It has not been effectively solved, the production recovery rate is not high, the grade of copper concentrate is not high, and the fine organic carbon in it brings many problems to the subsequent filtration operation, which is difficult to solve

Method used

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  • Efficient flotation method for copper ore containing superfine graphite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In terms of mass percentage, this example contains Cu 0.84%, organic carbon 3.49%, S 1.40%, Pb 0.007%, Zn 0.01%, As 0.001%, SiO 2 55.75%. The organic carbon in the ore is aphanitic graphite, and the crystal grain size is less than 10 μm.

[0031] like figure 1 As shown, a method for high-efficiency flotation of copper ore containing ultrafine graphite, the specific steps are as follows: wherein TT-B is composed of cyclodextrin: sodium hydroxide: sodium polyacrylate 8:2:1.

[0032] (1) Crush the raw ore to -2mm, then wet grind the crushed ore, and add lime 1000g / t to the mill, the grinding fineness is -0.074mm, accounting for 70% to 80%, add water to the pulp Concentration 33%.

[0033] (2) Add organic carbonaceous inhibitor TT-B500g / t, collector butyl xanthate 140g / t, 2 # Oil 15g / t and MIBC 15g / t are used for copper roughing to obtain roughing concentrate and tailings.

[0034] (3) Copper concentrates are obtained by roughing concentrates through 3 stages of close...

Embodiment 2

[0048]In terms of mass percentage, this example contains Cu 0.84%, organic carbon 3.49%, S 1.40%, Pb 0.007%, Zn 0.01%, As 0.001%, SiO 2 55.75%. The organic carbon in the ore is aphanitic graphite, and the crystal grain size is less than 10 μm.

[0049] Such as figure 1 As shown, a method for high-efficiency flotation of copper ore containing ultrafine graphite, the specific steps are as follows: wherein TT-B is composed of cyclodextrin: sodium hydroxide: sodium polyacrylate 9:2:1.

[0050] (1) Crush the raw ore to -2mm, then wet grind the crushed ore, and add 900g / t of lime into the mill, the grinding fineness is -0.074mm, accounting for 70% to 80%, add water to the pulp Concentration 35%.

[0051] (2) Add organic carbonaceous inhibitor TT-B450 g / t, collector butyl xanthate 130 g / t, 2 # Oil 17g / t and MIBC 17g / t are used for copper roughing to obtain roughing concentrate and tailings.

[0052] (3) Copper concentrates are obtained by roughing concentrates through 3 stages ...

Embodiment 3

[0058] In terms of mass percentage, this example contains Cu 0.84%, organic carbon 3.49%, S 1.40%, Pb 0.007%, Zn 0.01%, As 0.001%, SiO 2 55.75%. The organic carbon in the ore is aphanitic graphite, and the crystal grain size is less than 10 μm.

[0059] Such as figure 1 As shown, a method for high-efficiency flotation of copper ore containing ultrafine graphite, the specific steps are as follows: wherein TT-B is composed of cyclodextrin: sodium hydroxide: sodium polyacrylate 10:2:1.

[0060] (1) Crush the raw ore to -2mm, then wet grind the crushed ore, and add lime 1000g / t to the mill, the grinding fineness is -0.074mm, accounting for 70% to 80%, add water to the pulp Concentration 30%.

[0061] (2) Add organic carbonaceous inhibitor TT-B400g / t, collector butyl xanthate 130g / t, 2 # Oil 15g / t and MIBC 15g / t are used for copper roughing to obtain roughing concentrate and tailings.

[0062] (3) Copper concentrates are obtained by roughing concentrates through 3 stages of c...

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Abstract

The invention discloses an efficient flotation method of copper ore containing superfine graphite, which comprises the following steps: crushing raw ore, and adding lime into a mill for wet milling toobtain ore pulp; adding an organic carbonaceous inhibitor TT-B, a collecting agent butyl xanthate, 2 # oil and MIBC into the ore pulp, and carrying out flotation by adopting a flotation process of one-time roughing, three-time concentration, three-time scavenging and one-time middling centralized recleaning, so as to obtain copper concentrate; wherein the organic carbonaceous inhibitor TT-B is acombined inhibitor and is prepared from cyclodextrin, sodium hydroxide and sodium polyacrylate according to the mass ratio of (8 to 12) to 2 to 1. According to the method, organic carbonaceous flotation copper minerals are inhibited under a weakly alkaline condition, so that the problem of high chemical consumption caused by adsorption of a large amount of chemicals by micro-fine particle carbonaceous is effectively solved; the problem of loss of copper in the decarburization operation in the decarburization-copper flotation process is effectively solved; conditions are created for improving the copper recovery rate, the grade of the copper concentrate is improved, meanwhile, the recovery rate of the copper concentrate is increased by 5-7%, and the utilization rate of copper ore resourcesis increased.

Description

technical field [0001] The invention belongs to the technical field of copper ore beneficiation containing ultrafine graphite, and in particular relates to a high-efficiency flotation method for copper ore containing ultrafine graphite. Background technique [0002] The associated organic carbon in nonferrous metal ores is mainly coal and graphite. Coal and sulfide minerals are easier to separate by flotation, and graphite and sulfide minerals are more difficult to separate. The main reason is that graphite is generally soft, with fine crystal grain size (generally 10 μm) and easy muddying. For the beneficiation of copper ores with high organic carbon (mainly referring to graphite), the existing technologies generally include the following three types: direct flotation of copper (partial carbon enters the copper concentrate), decarburization-copper flotation and copper Carbon floating - separation of copper and carbon. [0003] The direct flotation process mixes part of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D1/02B03D101/06B03D103/02
CPCB03D1/018B03D1/02B03D2201/06B03D2203/02
Inventor 韩远燕祁忠旭孙大勇冯程李杰王龙肖舜元翟旭东李昭旺
Owner CHINA MINMETALS CHANGSHA MINING RES INST