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Ore dressing method for low grade nickel sulphide ore

A technology of nickel sulfide ore and beneficiation method, applied in flotation, solid separation, etc., can solve problems such as corrosion of flotation equipment and limited application, and achieve the effect of eliminating heterogeneous coagulation, eliminating corrosion, and improving high-efficiency separation

Active Publication Date: 2016-08-10
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acid flotation process will corrode the flotation equipment, which limits the application of this process

Method used

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  • Ore dressing method for low grade nickel sulphide ore
  • Ore dressing method for low grade nickel sulphide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Grinding low-grade nickel sulfide ore to -74 μm particle size grade accounts for 72% of the total ore mass percentage;

[0017] (2) Add sulfuric acid to the ground pulp to reduce the pH of the pulp to 5.5, then add ethylenediaminetetraacetic acid 6kg / t ore, and mix the pulp for 20 minutes. During the pulp mixing process, add sulfuric acid to keep the pH of the pulp at 5.5;

[0018] (3) Add pH adjusting agent sodium carbonate to adjust the pulp pH to 9, add the xanthan gum of 150g / t ore, the Y89 xanthate of 120g / t ore, the No. 2 oil of 20g / t ore, and obtain to step (2) The ore slurry is used for roughing to obtain nickel sulfide ore roughing concentrate and roughing tailings, and Y89 xanthate is added to the roughing tailings for two sweeps to obtain the final tailings and sweeping ore. The first sweeping The dosage of collector Y89 xanthate is 60g / ton of ore, and the dosage of collector Y89 xanthate in the second sweep is 30g / ton of ore. Return to the first sweep; ...

Embodiment 2

[0024] (1) Grinding low-grade nickel sulfide ore to -74 μm particle size grade accounts for 70% of the total ore mass percentage.

[0025] (2) Add sulfuric acid to the ground pulp to reduce the pH of the pulp to 5.8, then add 8kg / t of ethylenediaminetetraacetic acid ore, and adjust the pulp for 20 minutes. During the pulping process, add sulfuric acid to keep the pH of the pulp at 5.8.

[0026] (3) Add pH adjusting agent sodium carbonate to adjust the pulp pH to 9, add the xanthan gum of 200g / t ore, the Y89 xanthate of 180g / t ore, No. 2 oil of 25g / t ore, and obtain to step (2) The ore slurry is used for roughing to obtain nickel sulfide ore roughing concentrate and roughing tailings, and Y89 xanthate is added to the roughing tailings for two sweeps to obtain the final tailings and sweeping ore. The first sweeping The dosage of collector Y89 xanthate is 90g / ton of ore, and the dosage of collector Y89 xanthate in the second sweep is 50g / ton of ore. Return to the first sweep.

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Abstract

The invention relates to an ore dressing method for low grade nickel sulphide ore. Through the application of the ore dressing method disclosed by the invention, nickel sulfide ore concentrate can be obtained from the low grade nickel sulphide ore containing serpentine. The ore dressing method disclosed by the invention comprises the following steps of performing ore grinding, performing ore pulp adjustment, performing coarse scavenging on nickel sulphide ore and performing selection on roughing ore concentrate. According to the ore dressing method disclosed by the invention, through the united effects of sulphuric acid and ethylenediaminetetraacetic acid, the out-of-phase coagulation of the serpentine and sulphide minerals is eliminated, and the restraining effects of the serpentine to the sulphide minerals are alleviated; before flotation, the pH of ore pulp is adjusted to weak alkali, and the flotation is performed, so that the corrosion effects of acid ore pulp to flotation equipment are eliminated. Xanthan gum is used as an inhibitor, so that the selective inhibition of lyophobic gangue is realized, and the high-efficient separation of nickel sulfide minerals and the gangue is improved.

Description

technical field [0001] The invention relates to a beneficiation method of low-grade nickel sulfide ore. The invention can obtain nickel sulfide concentrate from the low-grade 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 also the main reason that affects the selection ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03D1/00B03D1/018B03D2201/007B03D2201/06B03D2201/02B03D2201/04B03D2203/02
Inventor 冯博罗仙平彭金秀朱贤文郭蔚曹志明陈志勇
Owner JIANGXI UNIV OF SCI & TECH
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