Method for extracting nickel with pressure leaching of non-metal high nickel sulfonium material

A pressure leaching and non-metallization technology, applied in the direction of improving process efficiency, can solve the problems of low metal recovery rate, poor process adaptability, energy and material consumption, etc., and achieve the effect of wide adaptability of raw materials

Active Publication Date: 2010-08-25
JINCHUAN GROUP LIMITED
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AI Technical Summary

Problems solved by technology

[0002] The traditional nickel refining is the nickel sulfide anode electrolysis process, which has the following disadvantages: 1) There is a lot of slag returning in the middle, the slag returning treatment is complicated, and the metal recovery rate is low; 2) Energy and material consumption is large, and the cost is high; 3) The products are relatively relatively Single, low market share, difficult to resist market risks; 4) Poor process adaptability, difficult to meet the processing of raw materials with different Ni / Cu ratios; 5) Severe dispersion of precious metals, low recovery rate
[0012] Due to certain applicable conditions, the above-mentioned processes are not ideal for the treatment of raw materials rich in precious metals and non-metallized high-nickel matte materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Specific steps: the non-metallized high-nickel matte material (Ni65.6%, Co1.0%, Cu3.0%, Fe3.5%, S23.5%), the particle size is less than 50 μm accounts for more than 90%, after metering, to In the pulping tank, the former liquid (a stage of pressurized liquid) and sulfuric acid are continuously and uniformly returned to the pulping tank for pulping, and the liquid-solid ratio during pulping is controlled to reach 7:1m 3 / ton. After slurrying, the pulp is sent to a section of normal pressure leaching. The reaction temperature of the first section of normal pressure leaching is controlled at 75°C, and the pH value of the end point is controlled at 5.5. Qingye is used as the finished liquid, and the underflow enters the second-stage atmospheric pressure slurry through the rubber hose pump, and the liquid-solid ratio of the slurry is controlled to be 7:1m during the second-stage atmospheric pressure slurry 3 / ton, the initial concentration of sulfuric acid is 60g / l, the in...

Embodiment 2

[0043] Specific steps: the non-metallized high-nickel matte material (Ni65.6%, Co1.0%, Cu3.0%, Fe3.5%, S23.5%), the particle size is less than 50 μm accounts for more than 90%, after metering, to In the pulping tank, the former liquid (a stage of pressurized liquid) and sulfuric acid are continuously and evenly returned to the pulping tank for pulping, and the liquid-solid ratio during pulping is controlled to reach 8:1m 3 / ton, after pulping, the pulp is sent to a section of normal pressure leaching, the reaction temperature of the first section of normal pressure leaching is controlled at 80°C, and the pH value of the end point is controlled at 5.3; Qingye is used as the finished liquid, and the underflow enters the second-stage atmospheric pressure slurry through the rubber hose pump. During the second-stage atmospheric pressure slurry, the liquid-solid ratio of the slurry is controlled to be 8:1m 3 / ton, the initial concentration of sulfuric acid is 55g / l, the initial so...

Embodiment 3

[0045] Specific steps: the non-metallized high-nickel matte material (Ni65.6%, Co1.0%, Cu3.0%, Fe3.5%, S23.5%), the particle size is less than 50 μm accounts for more than 90%, after metering, to In the pulping tank, the former liquid (a stage of pressurized liquid) and sulfuric acid are continuously and uniformly returned to the pulping tank for pulping, and the liquid-solid ratio during pulping is controlled to reach 9:1m 3 / ton, after pulping, the pulp is sent to a section of normal pressure leaching, the reaction temperature of the first section of normal pressure leaching is controlled at 85°C, and the pH value of the end point is controlled at 5.8; Qingye is used as the finished liquid, and the underflow enters the second-stage atmospheric pressure slurry through the hose pump, and the slurry liquid-solid ratio is controlled to be 6:1m during the second-stage atmospheric pressure slurry 3 / ton, the initial concentration of sulfuric acid is 65g / l, the initial solution c...

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Abstract

The invention relates to a nickel extracting method through the pressurized leaching of non metallization high content nickel matte material. The invention is characterized in that the two-stage atmospheric pressure leaching process and the two-stage pressurized leaching process are adopted to extract nickel through the pressurized leaching of the non metallization high content nickel matte material. By adopting the method of the invention, the leaching rate of nickel and cobalt is larger than 98 percent, the noble metal is completely concentrated in leached slag, the sulfur of the high content nickel matte is oxidized into sulfate radical to enter the solution, the pour solution of nickel sulphate and cobalt sulphate is obtained after the one stage pressurized leaching solution is processed through the one stage atmospheric pressure leaching and purifying. Copper is mainly delivered into the two-stage pressurized leaching solution. Iron and noble metal are concentrated in the two-stage pressurized leached slag. The process has the advantages that the process is simple, highly efficient and environment friendly, and the adaptability of the raw material is wide. The invention is suitable for the treatment of albata alloy, and through adjusting the relative technical parameter, the invention is suitable for selectively leaching and segregating nickel, copper and noble metal fromnon metallization high content nickel matte with various grades.

Description

technical field [0001] The method for extracting nickel by pressure leaching of non-metallized high-nickel matte material relates to a metallurgical method for extracting nickel and enriching precious metals from non-metallized high-nickel matte. Background technique [0002] The traditional nickel refining is the nickel sulfide anode electrolysis process, which has the following disadvantages: 1) There is a lot of slag returning in the middle, the slag returning treatment is complicated, and the metal recovery rate is low; 2) Energy and material consumption is large, and the cost is high; 3) The products are relatively relatively Single, low market share, difficult to resist market risks; 4) Poor process adaptability, difficult to meet the processing of raw materials with different Ni / Cu ratios; 5) Severe dispersion of precious metals, low recovery rate. In view of the shortcomings of the traditional nickel refining process, in the second half of the 20th century, many nick...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B23/00
CPCY02P10/20
Inventor 李永军李尚勇张强林帅国权李继斌王芳镇汤玉莲廖正泰石文堂陈胜利郑军福国林陈志寰欧晓健杨立斌陈玉平赵重魏海军刘晓鹏徐军章郭晓芬曹康学丁才生
Owner JINCHUAN GROUP LIMITED
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