Beneficiation method for separating copper-nickel sulfide ore from serpentine gangue

A technology of copper-nickel sulfide ore and beneficiation method, applied in solid separation, flotation and other directions, can solve problems such as poor dispersant effect and dispersant consumption

Active Publication Date: 2016-03-23
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for ores with higher serpentine content, the effect of adding dispersants is poor
The reason is that with the increase of the serpentine content in the ore, a large amount of dispersant reacts with the serpentine in the pulp, resulting in the consumption of dispersant

Method used

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  • Beneficiation method for separating copper-nickel sulfide ore from serpentine gangue
  • Beneficiation method for separating copper-nickel sulfide ore from serpentine gangue
  • Beneficiation method for separating copper-nickel sulfide ore from serpentine gangue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Raw material: a copper-nickel sulfide ore in Xinjiang, its main chemical composition is wt%

[0024] Ni

Cu

MgO

0.81

0.30

27.2

[0025] The process is: Add 3kg / t of ore sodium carbonate into the mill, grind the ore to -0.074mm, accounting for 68%; transfer the ground pulp to the flotation tank, add 200g / t of ore regulator polo Sham, ultrasonic treatment for 10min while stirring, the ultrasonic frequency is 20KHz, the intensity of ultrasonic treatment is 150W, after ultrasonic treatment, add 120g / t ore collector Y89 xanthate, 20g / t ore foaming agent MIBC Rough separation to obtain rough separation concentrate and rough separation tailings; add 80g / t ore poloxamer to the rough separation tailings, and 60g / t ore Y89 xanthate for the first sweep to obtain the first sweep Tailings and scavenging, the first scavenging returns to roughing; 30g / t ore Y89 xanthate is added to the first scavenging tailings for the second scavenging operation, a...

Embodiment 2

[0030] Raw material: A low-grade copper-nickel sulfide ore sample in Xinjiang, its main chemical composition is (wt%)

[0031] Ni

Cu

MgO

0.39

0.08

38.9

[0032] The process is: add 5kg / t ore sodium carbonate into the mill, and grind the ore to -0.074mm, accounting for 75%. Transfer the ground pulp to the flotation tank, add 350g / t ore regulator poloxamer, and carry out ultrasonic treatment for 20 minutes while stirring. The frequency of ultrasonic wave is 20KHZ, and the intensity of ultrasonic treatment is 150W. Collector pentaxanthate and 35g / t ore foaming agent MIBC are used for roughing to obtain roughing concentrate and roughing tailings. Add 120g / t ore poloxamer and 80g / t ore pentaxanthate to the roughing tailings for the first scavenging to obtain the first scavenging tailings and scavenging medium, and the first scavenging medium Return to roughing; add pentaxanthate of 40g / t ore to the tailings of the first sweeping for the second ...

Embodiment 3

[0037] Raw material: a copper-nickel sulfide ore in Sichuan, its main chemical composition is (wt%)

[0038] Ni

Cu

MgO

0.72

0.27

21.37

[0039] The process is: add 2.5kg / t ore sodium carbonate into the mill, and grind the ore to -0.074mm, accounting for 70%. Transfer the ground pulp to the flotation tank, add 250g / t ore regulator poloxamer, and carry out ultrasonic treatment for 10 minutes while stirring. The frequency of ultrasonic wave is 30KHZ, and the intensity of ultrasonic treatment is 120W. Collector butyl xanthate, 20g / t ore foaming agent MIBC for roughing to get roughing concentrate and roughing tailings. Add 100g / t of ore poloxamer and 40g / t of ore to the roughing tailings to carry out the first sweeping to obtain the first sweeping tailings and sweeping ore, and the first sweeping ore Return to roughing; add 20g / t ore dixanthate to the tailings of the first sweep to carry out the second sweeping operation to obtain the sweeping ...

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Abstract

The invention relates to a beneficiation method for separating copper-nickel sulfide ore from serpentine gangue. The beneficiation method comprises the following steps: when the copper-nickel sulfide ore is roughly concentrated, a polymer reagent poloxamer which can be adsorbed onto the surface of sulfide mineral through hydrophobic interaction but cannot be adsorbed onto the surface of the serpentine gangue is added; ore pulp is dispersed through the steric hindrance of the polymer reagent, the heterocoagulation of serpentine and sulfide minerals is eliminated, the inhibiting effect of serpentine on the sulfide minerals is reduced, and the recovery rate of rough concentration of the copper-nickel sulfide ore containing serpentine is increased; for rough copper-nickel sulfide concentrate obtained through rough concentration, regulators sodium pyrophosphate and carboxymethyl cellulose are added to further disperse and inhibit gangue minerals; meanwhile a collector is added before the regulators are added, so that the collector is adsorbed onto the surfaces of sulfide minerals to protect the sulfide minerals; the selective inhibition to the gangue minerals is realized, and therefore the concentrate grade is increased. The beneficiation method solves the problems that the reagent dosage is large, valuable minerals are inhibited and tailings hardly sedimentate in the traditional method.

Description

technical field [0001] The invention relates to a beneficiation method for separating copper-nickel sulfide ore and serpentine gangue. The method can be used to obtain copper-nickel sulfide ore concentrate from the copper-nickel sulfide ore containing serpentine. Background technique [0002] Nickel is an important non-ferrous metal raw material required by my country's high-tech development and national economic construction, and is called "industrial vitamin". With the rapid development of my country's national economy, the demand for nickel is increasing, but nickel resources are becoming poorer, finer and more complex. The economical and efficient utilization of low-grade and refractory copper-nickel sulfide ore resources is an important way to achieve self-sufficiency in nickel resources and ensure the sustainable development of my country's national economy and national security. Serpentine is the most important gangue mineral in copper-nickel sulfide ore, and it is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/016
CPCB03D1/016
Inventor 冯博汪惠惠朱贤文陈志勇曹志明郭蔚
Owner JIANGXI UNIV OF SCI & TECH
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