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Beneficiation method for copper sulfide nickel ore with serpentines

A copper-nickel sulfide ore and ore dressing method technology, applied in flotation, solid separation, etc., can solve the problem that the dispersed state is difficult to maintain for a long time

Inactive Publication Date: 2013-09-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical stirring dispersion method is to disperse the agglomerated particles under the action of forced shear force, but the adsorption attraction between the particles still exists, so the dispersed state is difficult to maintain for a long time

Method used

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  • Beneficiation method for copper sulfide nickel ore with serpentines
  • Beneficiation method for copper sulfide nickel ore with serpentines
  • Beneficiation method for copper sulfide nickel ore with serpentines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Refer to the attached figure 1 , to describe Embodiment 1 of the present invention in detail.

[0023] Raw material: A sample of a copper-nickel sulfide mining area in Jinchuan, Gansu, its main chemical composition is (%)

[0024] Ni

Cu

MgO

1.41

1.01

27.48

[0025] One or several of xanthate, butyl xanthate, pentaxanthate, Y89-2 xanthate, etc. are used as collectors, sodium carbonate is used as pH regulator, metaphosphate, polyphosphate, water glass One or several of them, such as organic polymers, are used as regulators for froth flotation.

[0026] The process is: grind the ore to -0.074mm, accounting for 65%, add collector Y89-2 xanthate, carry out mechanical stirring and dispersing treatment under the stirring intensity of 2800r / min for 20min, and feed it into the flotation equipment for roughing two For the first sweeping operation, 150g / t of regulator sodium hexametaphosphate was added to the coarse concentrate for dispers...

Embodiment 2

[0032] Refer to the attached figure 2 , to describe Embodiment 2 of the present invention in detail.

[0033] Raw material: A sample of a copper-nickel sulfide mining area in Jinchuan, Gansu, its main chemical composition is (%)

[0034] Ni

Cu

MgO

1.35

0.97

25.93

[0035] Other conditions are with embodiment 1.

[0036] The process is as follows: take a slurry sample with a grinding fineness of -0.074mm, accounting for 66%, add regulator sodium hexametaphosphate, collector butyl xanthate, mechanically stir and disperse for 40 minutes at a stirring intensity of 2500r / min, and feed The flotation equipment performs one roughing and two sweeping operations; add 700g / t regulator sodium hexametaphosphate to the rough concentrate obtained by roughing, and perform two beneficiation to obtain concentrate 1; the second beneficiation of middle ore Concentrate 2 is obtained by concentration; the tailings obtained after two sweeps are screened at ...

Embodiment 3

[0041] Refer to the attached image 3 , to describe Embodiment 3 of the present invention in detail.

[0042] Raw material: A sample of a copper-nickel sulfide mining area in Jinchuan, Gansu, its main chemical composition is (%)

[0043] Ni

Cu

MgO

1.43

1.09

26.37

[0044] Other conditions are with embodiment 1.

[0045] The process is as follows: take a slurry sample with a grinding fineness of -0.074mm, accounting for 65%, add the collector butyl xanthate, and mechanically stir and disperse for 20 minutes under the condition of 2500r / min stirring intensity, and then feed it into the flotation equipment for a rough separation , the regulator sodium hexametaphosphate and ultrasonic waves are added to the coarse concentrate pulp for dispersion treatment, a beneficiation is carried out, and then sodium hexametaphosphate is added for dispersion treatment and then the second beneficiation is carried out to obtain the final concentrate.

[0...

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Abstract

The invention relates to a beneficiation method for copper sulfide nickel ore with serpentines, which comprises the following steps: adding collector before the roughing of the copper sulfide nickel ore, and using mechanical stirring to conduct dispersion process for ore slurry; and conducting the dispersion process for obtained rough ore concentrate by using regulators or ultrasonic waves or combined actions of the regulators and the ultrasonic waves before fine screening. The method adopts the mechanical stirring to disperse, so as to be capable of desorbing a large proportion of the serpentines in the process of roughing, therefore, the flotability of sulfide minerals and a roughing operation target are improved; during the concentrating beneficiation, out phase cohesions of micro-fine particles of the serpentines and the sulfide minerals are further desorbed by the dispersion of the regulators or the ultrasonic waves or the combination of the two to improve the concentrating beneficiation effect, therefore, the beneficiation target of the complete process is improved.

Description

technical field [0001] The invention relates to a beneficiation method of copper-nickel sulfide ore containing serpentine. The method can be used to obtain sulfide ore concentrate from serpentine-containing copper-nickel sulfide ore. Background technique [0002] The separation of copper-nickel sulfide ores containing serpentine is a recognized technical problem in the field of mineral processing, and researchers at home and abroad have conducted a lot of research on this type of ore. Theoretical studies have shown that in the weakly alkaline slurry commonly used in the flotation of copper-nickel sulfide ores, the positively charged serpentine slime can cover the surface of the negatively charged pentlandite through electrostatic attraction, and on the one hand, it can inhibit the nickel The flotation of pyrite, on the other hand, enters the flotation concentrate together with pentlandite, making it difficult to reduce the magnesium oxide content of the concentrate. [000...

Claims

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Application Information

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IPC IPC(8): B03D1/00
Inventor 冯其明卢毅屏冯博欧乐明张国范吕沛超
Owner CENT SOUTH UNIV