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Beneficiation method for low-grade copper sulphide ore

A technology of copper sulfide ore and ore dressing method, which is applied in flotation, solid separation, etc., can solve the problems of difficulty in guaranteeing the copper recovery rate of copper concentrate products, difficult recovery, and surface pollution, so as to optimize the environment of flotation pulp and avoid rich The effect of collecting and crushing and improving efficiency

Active Publication Date: 2016-01-27
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper sulfide ore with small crystal particle size and complex kambu characteristics adopts grinding (fine grinding)—the priority flotation process is difficult to ensure the recovery rate of copper from copper concentrate products, especially the effective recovery of associated precious metals; using grinding (coarse grinding)— Flotation-coarse concentrate regrinding process, during the regrinding process, the copper minerals that have been dissociated in the coarse concentrate are easily over-ground to the lower limit of flotation particle size and the surface is polluted, making it difficult to recover

Method used

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  • Beneficiation method for low-grade copper sulphide ore
  • Beneficiation method for low-grade copper sulphide ore

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The copper ore used is arsenic-containing low-copper primary copper sulfide ore, and its chemical composition (wt%) is as follows: copper 0.48%, sulfur 4.38%, gold 0.19g / t, silver 5.2g / t. The copper phase analysis is as follows: secondary copper sulfide accounts for 69.29%, primary copper sulfide accounts for 18.10%, and copper oxide accounts for 12.61%.

[0043]According to the dry weight of each ton of raw ore, firstly, the raw ore 1 is sequentially added with 1000g of adjusting agent lime a and 5g of ammonium butyl ammonium black medicine, and the ore is ground by a ball mill until the fineness of the ore is -0.074mm, which accounts for 55.0% of the ore powder A2, and the pH is adjusted to 8. Add foaming agent MIBCc10g, and obtain copper concentrate A3 and flash flotation tailings 4 through flash flotation; flash flotation tailings 4 undergo roughing I operation and roughing II operation to obtain roughing I concentrate 5. Roughing II concentrate 6 and roughing I tai...

Embodiment 2

[0044] Example 2: According to the dry weight of each ton of raw ore, firstly, the raw ore is sequentially added with an adjustment agent lime dosage of 1500g / t and a butylammonium black drug dosage of 6g / t, and the ore is ground by a ball mill until the grinding fineness is -0.074mm, accounting for 60.0 %, ball mill discharge (pH = 9), add foaming agent MIBCc dosage 20g / t, and obtain copper concentrate A3 and flash flotation tailings 4 through flash flotation operation; flash flotation tailings 4 are roughed Ⅰ operation and roughing II operation to obtain roughing I concentrate 5, roughing II concentrate 6, roughing I tailings 7, roughing II tailings 8; roughing II tailings 8 after sweeping I operation and sweeping Operation II results in scavenging I concentrate 10, sweeping II concentrate 16, sweeping I tailings 11, and final tailings 17; roughing I concentrates and roughing II concentrates are combined into a ball mill for regrinding to fine ore After the concentration is ...

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Abstract

The invention relates to a beneficiation method for low-grade copper sulphide ore. The method comprises the technology steps and conditions that ore grinding is carried out, and water, lime and butylamine dithiophosphate are added; flash flotation is carried out, the pH value is adjusted, and MIBC is added; roughing I and roughing II are carried out, and modified butylamine dithiophosphate and MIBC are added in flash flotation tailings; ore grinding is carried out through roughing concentrate obtained through two times of roughing; sifting I is carried out, lime is added in re-ground ore grain powder B pulp to adjust the pH value, and water glass is added; sifting II is carried out, and no additive is added; scavenging I is carried out, and sodium sulphide, butylamine dithiophosphate and MIBC are added in roughing II tailings; and scavenging II is carried out, and butylamine dithiophosphate and MIBC are added in scavenging I tailings. The beneficiation method has the beneficial effects that the flotation efficiency of the objective mineral is high, the mineral which is good in floatability and is separated in a monomer manner is preferably recycled, the phenomena of enrichment and excessive crushing of associated noble metal in a loop can be avoided, the comprehensive mineral recovery rate is high, and the flotation pulp environment is good; and the rough ore and concentrate yield is high, the separated mineral is preferably recycled, copper mineral and connected growing bodies hard to separate are effectively recycled, and the associated noble metal is efficiently recovered. The beneficiation method is applicable for processing noble metal containing copper sulphide ore not even in dissemination size.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a beneficiation method of low-grade copper sulfide ore, which is suitable for the flotation application of processing copper sulfide minerals containing precious metals with uneven embedded particle size. Background technique [0002] There are two sorting processes for low-grade copper sulfide ore: flotation separation and wet leaching. The wet leaching process has the advantages of energy saving and high comprehensive utilization rate of associated valuable elements, but it is restricted by factors such as environmental protection, climatic conditions, ore properties, and process control. The flotation separation process is mainly based on priority, mixed-priority and other flotation processes. Complex ores sometimes use stage grinding, stage sorting, separate treatment of middle ore, and mud-sand separation. Copper sulfide ore with small crystal particle size and complex kambu charac...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D101/02B03D103/02
CPCB03D1/00B03D2201/02B03D2203/02
Inventor 李广鲁军温建岳丽琴肖琴闫军宁廖桂琴彭钦华
Owner ZIJIN MINING GROUP
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