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Solvent extraction method for acquiring alloy with magnetic separation copper bessemer matte

A leaching, copper-nickel technology, applied in the direction of improving process efficiency, can solve the problems of increasing environmental pollution, polluting the atmosphere, high energy consumption, etc., and achieve the effect of simple, efficient and environmentally friendly process

Active Publication Date: 2008-06-11
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This recovery process has many steps, high energy consumption, low recovery rate of platinum group metals, harsh working conditions, and the resulting SO 2 serious air pollution
[0003] Under the condition of increasing nickel production capacity, the processing capacity of the alloy obtained by magnetic separation of copper-nickel high-matte, the main raw material for the production of precious metals, will also increase. If the current alloy vulcanization process is used, the recovery of precious metals and environmental pollution problems will increase in total. Will greatly increase, will increase the pollution of the environment

Method used

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  • Solvent extraction method for acquiring alloy with magnetic separation copper bessemer matte

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The alloy composition is shown in Table 1

[0035] The raw material composition is shown in Table 1:

[0036] Table 1 The composition of the coarse-grained alloy is as follows (%, g / t):

[0037] Ni (%)

co

Cu

Fe

S

Si0 2

Pt(g / t)

PD

Au

69

1.28

14.23

8.5

3.5

1.36

123.22

56.19

48.8

[0038] The coarse-grained alloy is quantitatively and evenly added to the batching slurry tank, and at the same time, the pressurized leaching return liquid, crystallization mother liquor, a certain amount of water and sulfuric acid are added to the batching slurry tank, and the slurry liquid-solid ratio is controlled to be 11:1m 3 / ton, the initial concentration of sulfuric acid is 60g / l, after pulping, the slurry is subjected to a normal pressure leaching oxidation section, the reaction temperature of the oxidation section is controlled at 80°C, and the reaction time is 1h; T...

Embodiment 2

[0044] The composition of the coarse-grained alloy is shown in Table 1

[0045] The coarse-grained alloy is uniformly added to the batching slurry tank in a quantitative manner, and at the same time, the pressurized leaching return liquid, crystallization mother liquor, a certain amount of water and sulfuric acid are added to the batching slurry tank, and the slurry liquid-solid ratio is controlled to be 12:1m 3 / ton, the initial concentration of sulfuric acid is 55g / l, after pulping, the pulp is subjected to a normal pressure leaching oxidation section, the reaction temperature of the oxidation section is controlled at 85°C, and the reaction time is 1.5h; The prepared slurry is pumped into a section of atmospheric pressure oxidation tank, and oxidation leaching is carried out under the condition of passing oxygen. After oxidation leaching, it is pumped into a section of normal pressure replacement tank through the middle tank for replacement and leaching of copper precipitati...

Embodiment 3

[0051] The composition of the coarse-grained alloy is shown in Table 1

[0052] The coarse-grained alloy is quantitatively and evenly added to the batching slurry tank, and at the same time, the pressurized leaching return liquid, crystallization mother liquor, a certain amount of water and sulfuric acid are added to the batching slurry tank, and the slurry liquid-solid ratio is controlled to be 13:1m 3 / ton, the initial concentration of sulfuric acid is 50g / l, after pulping, the pulp is subjected to a normal pressure leaching oxidation section, the reaction temperature of the oxidation section is controlled at 85°C, and the reaction time is 2h; The prepared slurry is pumped into a section of atmospheric pressure oxidation tank, and oxidation leaching is carried out under the condition of passing oxygen. After oxidation leaching, it is pumped into a section of normal pressure replacement tank through the middle tank for replacement and leaching of copper precipitation. The rea...

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Abstract

The invention relates to a leaching method for alloy obtained by magnetic separation nickel-copper bessemer matte. The invention is characterized in that two-stage atmospheric pressure leaching, pressurized leaching, pressurized deferrization and bluestone evaporation and crystal processes are adopted to obtain pressurized slag with higher noble metal concentration ratio, and the pressurized slag is delivered in the noble metal system directly. The method of the invention belongs to the metallurgical technology for treating the alloy (coarse grain alloy) material obtained by magnetic separation nickel-copper bessemer matte. Nickel, iron, and copper are leached out stage by stage, and the leached slag concentrated with noble metal can be sent for the noble metal processing. Leached lixivium solution including iron is pressurized for deferrization, and after the deferrization, the solution is nickel solution with less foreign impurities, which can be delivered in the nickel system. The lixivium solution including copper is evaporated and crystallized, to obtain bluestone to form the open circuit of copper, and crystallized mother solution is circularly used in the leaching system. The process has the advantages that the process is simple, highly efficient and environment friendly. The invention is suitable for the treatment of copper nickel alloy, and through adjusting the relative technical parameter, the invention is suitable for selectively leaching and segregating nickel, copper and noble metal from alloy mineral with various grades.

Description

technical field [0001] The invention relates to a method for leaching an alloy obtained by magnetically separating copper-nickel high matte. Background technique [0002] Since the palladium group and precious metals co-exist in nickel minerals, platinum group metals (platinum, palladium, osmium, iridium, ruthenium, rhodium) are recovered during the nickel production process. The existing method of extracting platinum group metals is to select coarse-grained alloys from the copper-nickel high-matte intermediate product of smelting, and remelt the coarse-grained alloys enriched with platinum group metals with sulfur (anode slime desulfurization residue) to form Secondary copper-nickel high-matte, and then the secondary copper-nickel high-matte is crushed, and the secondary copper-nickel alloy is magnetically separated, and then enters the precious metal recovery workshop as a raw material for extracting platinum group metals. This recovery process has many steps, high energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/04C22B3/22C22B3/08C22B3/46
CPCY02P10/20
Inventor 李尚勇王芳镇郑军福廖正泰欧晓健陈志寰杨立斌徐军章李伟丁才生杨永宁陆为民郭海上官靖琦
Owner JINCHUAN GROUP LIMITED
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