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Leaching method for alloy material obtained from magnetic copper-nickel concentrate

A leaching, copper-nickel technology, applied in the direction of process efficiency improvement, etc., can solve the problem of high recovery rate of platinum group metals, achieve the effect of environmental friendliness, simple and efficient method, and solve environmental pollution problems

Inactive Publication Date: 2008-09-10
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies in the above-mentioned technologies, to provide a recycling process that is simple, low energy consumption, high recovery rate of platinum group metals, and can effectively improve working conditions and reduce SO 2 Low-altitude emission, environmental pollution and other problems. The leaching method of the alloy material obtained from the magnetic separation of nickel concentrate, so that the precious metal in the alloy can be enriched.

Method used

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  • Leaching method for alloy material obtained from magnetic copper-nickel concentrate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The raw material composition of the alloy material for leaching magnetically separated copper-nickel concentrate is as follows:

[0016] The alloy material raw material composition (%, g / t) of the alloy material of table 1 magnetic separation copper-nickel concentrate

[0017] Ni(%) Co Cu Fe S SiO 2 Pt(g / t)PdAu

[0018] 59.4 1.23 4.48 13.35 14.17 2.42 51.0 26.0 32.0

[0019] Add the materials evenly to the batching slurry tank, and at the same time add the pressure leaching return liquid, water and sulfuric acid to the batching slurry tank, the liquid-solid ratio of the prepared slurry is 7m 3 / ton, the initial sulfuric acid concentration is 15g / l, pumped into a section of normal pressure oxidation tank, reacted at 80°C for 4 hours; carried out oxidation leaching under the condition of compressed air, after oxidation leaching, pumped into the thickener through the middle tank for Liquid-solid separation. The thickener overflows into the normal pressure leachate ...

Embodiment 2

[0023] The raw material composition of the alloy material for leaching magnetically separated copper-nickel concentrate is the same as Table 1

[0024] Add the material evenly to the batching slurry tank, and add the pressure leaching return liquid, water and sulfuric acid to the batching slurry tank at the same time, and the liquid-solid ratio of the prepared slurry is 7.5m 3 / ton, the initial sulfuric acid concentration is 14g / l, pumped into a normal pressure oxidation tank, and reacted at 80°C for 4 hours; oxidation leaching was carried out under the condition of compressed air, and then pumped into the thickener through the middle tank for oxidation leaching Liquid-solid separation. The thickener overflows into the normal pressure leachate storage tank.

[0025] The underflow of the thickener is pumped to a section of slag slurrying tank through the underflow pump, and water and sulfuric acid are added to the slurrying tank at the same time for batching. The liquid-solid...

Embodiment 3

[0028] The raw material composition of the alloy material for leaching magnetically separated copper-nickel concentrate is the same as Table 1

[0029] Put the material into the batching slurry tank evenly, and add the pressure leaching return liquid, water and sulfuric acid to the batching slurry tank at the same time, the liquid-solid ratio of the prepared slurry is 8:1m 3 / ton, the initial sulfuric acid concentration is 13g / l, pumped into a normal pressure oxidation tank, and reacted at 85°C for 4 hours; oxidation leaching was carried out under the condition of compressed air, after oxidation leaching, it was pumped into a thickener through the middle tank for Liquid-solid separation. The thickener overflows into the normal pressure leachate storage tank.

[0030] The underflow of the thickener is pumped to a section of slag slurrying tank through the underflow pump, and water and sulfuric acid are added to the slurrying tank at the same time for batching. The liquid-soli...

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Abstract

The invention provides a method for leaching an alloy material obtained from the magnetic-separating copper-nickel ore concentrate, relating to a method for recycling the platinum group metals in the process of producing the metallic nickel, in particular to a method for recycling the platinum group metals from the fine alloy material of the leaching magnetic separation copper-nickel ore concentrate. The method is characterized in that the leaching process adopts two sections: one is leaching at standard atmosphere and the other is leaching with pressurization to obtain the leaching slag with high platinum group metals content and the leaching liquid with high nickel-copper content. The method of the invention processes the alloy material of the leaching magnetic separation copper-nickel ore concentrate by the wet method technique, and adopts the processing technique combining the sulphuric acid leaching at standard atmosphere and the leaching with pressurization to obtain the leaching liquid with high nickel-copper content and the leaching slag with high platinum group metals content; the leaching slag is directly used for recycling the platinum group metals and the leaching liquid enters the electrolytic nickel system. The method effectively solves the recycling problem of the platinum group metals and the problem of environmental protection, is simple and efficient and protects the environment.

Description

technical field [0001] A method for leaching alloy materials of magnetically separated nickel concentrates relates to a method for recovering platinum group metals in the production process of metal nickel, in particular to a method for recovering platinum group metals by leaching fine alloy materials of magnetically separated nickel concentrates. Background technique [0002] Since palladium group and precious metals usually co-exist in nickel minerals, platinum group metals (platinum, palladium, osmium, iridium, ruthenium, rhodium) must be recovered while producing nickel. At present, in the smelting process, the process related to the extraction of platinum group metals is to process the smelting intermediate product-copper-nickel high matte to obtain a copper-nickel alloy enriched with most of the precious metals, and part of it enters the nickel concentrate. The copper-nickel alloy enriched with platinum group metals is mixed with the nickel concentrate casting plate an...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B11/00C22B23/00C22B15/00
CPCY02P10/20
Inventor 李尚勇王芳镇郑军福廖正泰欧晓健陈志寰徐军章丁才生杨永宁陆为民曹康学郑琦李全
Owner JINCHUAN GROUP LIMITED
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