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Beneficiation process for refractory micro-fine particle-graded iron-copper ore

A fine-grained, copper ore technology, applied in the field of mineral processing, can solve the problems of poor selectivity, difficulty in comprehensive recovery, and ineffective development, etc., and achieve good economic benefits and eliminate hidden dangers of environmental pollution.

Active Publication Date: 2014-09-24
TONGLING CHEM GRP XINQIAO MINING IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Iron-copper ore often occurs in the form of large-scale or super-large deposits (such as the Xinqiao deposit in Anhui). Difficult and thus less optional
Most of these mines either only sort out a single copper concentrate with high copper content, or are not effectively developed due to the difficulty of beneficiation, which makes the overall comprehensive utilization rate of such resources not high and needs to be further improved

Method used

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  • Beneficiation process for refractory micro-fine particle-graded iron-copper ore
  • Beneficiation process for refractory micro-fine particle-graded iron-copper ore
  • Beneficiation process for refractory micro-fine particle-graded iron-copper ore

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Embodiment 1

[0022] Example 1: (1), the first flotation: before the first flotation, the raw ore should be crushed and sieved first, the particle size of the product under the sieve should be controlled at -12mm, and the product of -12mm should be rod milled once. Finally, the particle size of the product is controlled by a hydrocyclone so that it reaches -0.074mm, accounting for 63-68%, and then flotation is carried out. The collector uses Z-200, and the dosage is: 4-6g / t. The foam product is mainly yellow Copper ore, but because the monomer dissociation is not very deep, there is still a part of magnetite in the foam product. Therefore, the foam product must be subjected to secondary rod milling, and -0.074mm is controlled to account for 68-75%, while the primary flotation tailings product is sieved by a high-frequency sieve, and the particle size of the sieving control is 0.074mm. The +0.074mm product is rod milled again, and the -0.074mm product is sieved by a high-frequency sieve. The...

Embodiment 2

[0028] Preferred embodiment 2: The flow process of embodiment 1 is basically the same, the difference is that the temperature is controlled at 10-15°C during the first flotation, and 15-22wt% industrial paraffin and 10- 20wt% talcum powder, as we all know, the greater the concentration of the collector, the greater the adsorption capacity, the higher the flotation recovery, but when the concentration of the agent reaches a certain value, that is the amount of Z-200 in the present invention: 4-6 g / During t, the rate of recovery declines with the rise of medicament concentration and adsorption capacity, for this reason the present invention adds 15-22wt% industrial paraffin and 10-20wt% talcum powder while adding the Z-200 of 4-6 g / t And maintaining the flotation temperature in the lower range of 10-15°C can stabilize the flotation recovery rate so that it does not drop in the range of 4-6g / t, which ensures both the adsorption capacity and the flotation recovery rate.

[0029] ...

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Abstract

The invention discloses a beneficiation process for refractory micro-fine particle-graded iron-copper ore. The beneficiation process for the refractory micro-fine particle-graded iron-copper ore comprises the following steps: (1) performing first flotation; (2) performing second flotation and first magnetic separation to obtain iron ore concentrate 1 and tailings 1; (3) performing third flotation and second magnetic separation to obtain copper ore concentrate 2 and tailings of the three times of flotation, and performing secondary magnetic separation on the tailings of the three times of flotation to obtain iron ore concentrate 2; (4) performing third magnetic separation and gravity separation to obtain iron ore concentrate 3, tailings 3, iron ore concentrate 4 and tailings 4; (5) performing combined beneficiation on the micro-fine particle-graded tailings: performing centrifuge roughing-table concentration on the tailings 4 obtained through the process to obtain iron ore concentrate 5 and tailings 5. The beneficiation process disclosed by the invention has the beneficial effects that during a separation process, stage grinding and stage separation are adopted, so that the over crushing phenomenon is not easy to occur on the iron ore concentrate, and the goals of early recovery and high recovery is achieved; copper and iron in the iron-copper ore are comprehensively recovered; moreover, during the utilization of tailings recovery, the recovery rate of the iron ore concentrate is improved by 10-20 percent; the beneficiation process for the refractory micro-fine particle-graded iron-copper ore has very good economic benefit.

Description

technical field [0001] The invention relates to the field of ore dressing, in particular to a beneficiation process for refractory fine-grained iron-copper ore. Background technique [0002] The Xinqiao copper-sulfur-iron deposit is a very important deposit in the Tongling ore concentration area of ​​the middle and lower reaches of the Yangtze River metallogenic belt in my country. In addition to rich sulfur reserves, this kind of deposit is accompanied by extremely large reserves of iron and relatively large reserves of copper. etc. There are also many such resources in other places in China, such as Anqing Copper Mine in Anhui, Jinding Mining in Anhui, Bayannur Huogeqi Polymetallic Mine in Inner Mongolia, etc. According to the magnetic separation effect, hematite of 74-0 μm and magnetite of 56-0 μm are often called fine-grained iron ore, and hematite of 45-0 μm and magnetite of 30-0 μm are called fine-grained iron ore. iron ore. [0003] At present, there are not many rep...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 陈江安邱廷省高建峰刘恒亮韩仁海
Owner TONGLING CHEM GRP XINQIAO MINING IND CO LTD
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