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Separation process for copper sulphide ore with superfine disseminated grain sizes

A copper sulfide ore and particle size technology, which is applied in flotation, solid separation, grain processing, etc., can solve the problems of reducing the grade and recovery rate of concentrate products, wide product particle size distribution, and flotation slurry with more mud, and achieves improvement. Flotation environment, improve the concentrate grade, and benefit the effect of subsequent smelting

Active Publication Date: 2017-10-24
厦门紫金矿冶技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To deal with this kind of copper ore, the separation process of stage grinding is generally adopted. If some copper minerals embedded with coarse particle size are put into regrinding operation, on the one hand, it will waste energy consumption, on the other hand, it may dissociate the monomers. Copper mineral loss in the process
The traditional fine grinding process has a wide particle size distribution and relatively many fine-grained parts, which are prone to mudification, affect subsequent flotation operations, and reduce the grade and recovery rate of concentrate products
Generally speaking, the limitation of the traditional fine grinding process is that the flotation pulp contains a lot of mud, and the beneficiation operation is easy to entrain gangue and float together, resulting in low concentrate grade
In addition, the traditional process adopts a closed-circuit process of medium ore return, and the sludge is easy to accumulate, which leads to the deterioration of the flotation environment

Method used

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  • Separation process for copper sulphide ore with superfine disseminated grain sizes
  • Separation process for copper sulphide ore with superfine disseminated grain sizes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The copper ore used in embodiment 1 belongs to copper sulfide ore, the main copper minerals are chalcopyrite and chalcocite, and the raw ore contains 3.76% copper (wt%). According to the dry weight of each ton of raw ore, the crushed raw ore and water are first added to the rod mill at a ratio of 1:1 for grinding, and the amount of collector SIBX is added to 120g / t during the grinding, and the discharge of the rod mill Grinding fineness reaches -0.053mm (fineness less than or equal to 0.053mm) accounting for 80%. Add foaming agent SF522 dosage 65g / t to ball mill discharge, and perform flash flotation to obtain flash flotation concentrate and flash flotation tailings; add collector SIBX dosage 18g / t to flash flotation tailings in turn Copper roughing with foaming agent SF522 at 10g / t to obtain copper roughing concentrate and copper roughing tailings, combined with flash flotation concentrate and copper roughing concentrate, adding collector SIBX at 10g / t Concentration I...

Embodiment 2

[0041] The copper ore used in embodiment 2 belongs to copper sulfide ore, and the main copper minerals are chalcopyrite and chalcocite, and the raw ore contains 3.75% copper (wt%). According to the dry weight of each ton of raw ore, the crushed raw ore and water are first added to the rod mill at a ratio of 1:1 for grinding, and the amount of collector SIBX is added to 110g / t during the grinding, and the discharge of the rod mill Grinding fineness reaches -0.053mm, accounting for 80%. Add foaming agent SF522 dosage 60g / t to ball mill discharge, and perform flash flotation to obtain flash flotation concentrate and flash flotation tailings; add collector SIBX dosage 17g / t to flash flotation tailings in turn Copper roughing with foaming agent SF522 at 10g / t to obtain copper roughing concentrate and copper roughing tailings, combined with flash flotation concentrate and copper roughing concentrate, adding collector SIBX at 10g / t Concentration I is carried out to obtain the concen...

Embodiment 3

[0043] The copper ore used in Example 3 belongs to copper sulfide ore, the main copper mineral is chalcocite, and the raw ore contains 4.24% copper (wt%). According to the dry weight of each ton of raw ore, the crushed raw ore and water are first added to the rod mill at a ratio of 1:1 for grinding, and the amount of collector SIBX is added to 110g / t during the grinding, and the discharge of the rod mill Grinding fineness reaches -0.053mm, accounting for 80%. Add foaming agent SF522 dosage 60g / t to ball mill discharge, and perform flash flotation to obtain flash flotation concentrate and flash flotation tailings; add collector SIBX dosage 17g / t to flash flotation tailings in turn Copper roughing with foaming agent SF522 at 10g / t to obtain copper roughing concentrate and copper roughing tailings, combined with flash flotation concentrate and copper roughing concentrate, adding collector SIBX at 10g / t Concentration I is carried out to obtain the concentrate I and middle ore 1, ...

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Abstract

The invention discloses a separation process for copper sulphide ore with superfine disseminated grain sizes. The separation process comprises the steps that collectors are added in the coarse grinding process and give full play to the fresh surfaces of minerals, the action efficiency of the collectors on the mineral surfaces is improved, a part of copper ore which is subjected to monomer separation is obtained through quick floatation, rough concentrate is then subjected to low concentration and medium rotating speed concentration operation for two times to obtain high-grade copper concentrate 1, middlings 1 and middlings 2, roughing tailings are subjected to three-section scavenging operation to obtain middlings 3, the middlings 1, the middlings 2 and the middlings 3 are combined and enter ultrafine grinding operation, ultrafine grinding products are subjected to regrinding concentration I and regrinding concentration II operation, and copper concentrate 2 is obtained. The effect of treating the copper sulphide ore with the superfine disseminated grain sizes is good, adaptability is high, and high-grade concentrate products can be obtained.

Description

technical field [0001] The invention relates to metal ore beneficiation technology, in particular to a beneficiation process of copper sulfide ore with fine embedded particle size. Background technique [0002] With the mining and utilization of copper ore resources, copper ore resources are gradually developing in the direction of lean and miscellaneous, which greatly increases the difficulty of beneficiation and sorting. Among them, fine-grained copper ore, especially copper ore with uneven thickness and distribution, is a type of copper ore that is difficult to deal with. In this type of copper ore, some copper minerals have a coarser particle size, while some copper minerals have a finer particle size, even less than 10 μm. To deal with this kind of copper ore, the separation process of stage grinding is generally adopted. If some copper minerals embedded with coarse particle size enter the regrinding operation, on the one hand, it will waste energy consumption, on the ...

Claims

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Application Information

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IPC IPC(8): B03D1/012B02C21/00B03D101/02B03D101/04
CPCB02C21/00B03D1/012B03D2201/02B03D2201/04
Inventor 孙忠梅龙翼温建甘永刚陈水波徐其红黄雄张卿石仑雷
Owner 厦门紫金矿冶技术有限公司
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