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Synthesis method of nickel protoxide precursor nickel carbonate

A nickel oxide and synthesis method technology, applied in the direction of nickel oxide/nickel hydroxide, nickel carbonate, etc., can solve the problems of difficulty in synthesizing high-quality nickel carbonate, high content of sodium and sulfate, and high water content of filter cake, to achieve It is convenient for industrialization, popularization and application, good effect, and the effect of improving labor productivity

Active Publication Date: 2016-06-08
JINCHUAN GROUP LIMITED
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using sodium carbonate for nickel precipitation has poor filtration performance, high moisture content of filter cake, difficult post-treatment process, high sodium and sulfate content, and it is difficult to synthesize high-quality nickel carbonate; using ammonium bicarbonate for nickel precipitation is easy to filter, NH 4 + Great impact on the system, low nickel recovery rate, difficult wastewater treatment

Method used

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  • Synthesis method of nickel protoxide precursor nickel carbonate
  • Synthesis method of nickel protoxide precursor nickel carbonate
  • Synthesis method of nickel protoxide precursor nickel carbonate

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Put into 100m nickel sulfate solution containing nickel 54g / L 3 , output 20 tons of nickel carbonate with a water content of 50%, according to the above operation, synthesize mother liquor, synthesize nickel carbonate, alkali leached nickel carbonate, slurry washed nickel carbonate (high-purity nickel carbonate) and corresponding main metals and impurities of nickelous oxide products See the table below for changes.

[0026] Main metal and impurity variation of table 3 product example 1

[0027]

example 2

[0029] Put into 100m nickel sulfate solution containing nickel 55.35g / L 3 , output 20 tons of nickel carbonate with 50% water content, operate according to the specific implementation method, nickel sulfate solution, synthetic mother liquor, synthetic nickel carbonate, alkaline immersion nickel carbonate, nickel carbonate (high-purity nickel carbonate) after pulping and washing and corresponding oxidized The changes of main metals and impurities of nickel products are shown in the table below.

[0030] Main metal and impurity variation of table 4 product example 2

[0031]

example 3

[0033] Put into 100m nickel sulfate solution containing nickel 52.88g / L 3 , output 20 tons of nickel carbonate with 50% water content, operate according to the specific implementation method, nickel sulfate solution, synthetic mother liquor, synthetic nickel carbonate, alkaline immersion nickel carbonate, nickel carbonate (high-purity nickel carbonate) after pulping and washing and corresponding oxidized The changes of main metals and impurities of nickel products are shown in the table below.

[0034] Main metal and impurity variation of table 5 product example 3

[0035]

[0036] The above three examples yielded 60 tons of high-purity nickel carbonate. Compared with the traditional method for synthesizing high-purity nickel carbonate, the patented method has absolute advantages, processing costs and investment costs are greatly reduced, and labor productivity is improved. Magnesium removal by synthesis of nickel carbonate can remove 50% magnesium from the supernatant thr...

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Abstract

The invention discloses a synthesis method of nickel protoxide precursor nickel carbonate. According to the method, parallel-flow and low-pH-value semi-synthesis for magnesium removal, pulpifying and high-pH-value alkaline leaching for sulfur removal as well as pulpifying and washing for sodium removal are performed, through precise control on the pH value, fractional precipitation, filtering and washing, impurities including magnesium, sodium and sulfate radicals are removed from a supernatant, and high-quality nickel protoxide precursor nickel carbonate is prepared. The method is low in processing cost, high in metal recovery rate, low in requirement for equipment materials, low in investment cost, low in technical threshold, simple, convenient, good in effect, good in nickel carbonate quality, stable and reliable in product quality, good in economy, high in profit, convenient to popularize and apply industrially and capable of recycling water resources, and is a green industrial project which is worthy of popularization, low in cost, low in energy consumption and high in benefit.

Description

technical field [0001] The invention relates to a method for synthesizing nickel carbonate, which belongs to the technical fields of chemical industry and metallurgy. Background technique [0002] Nickel carbonate synthesis usually uses sodium carbonate or ammonium bicarbonate as precipitant. Using sodium carbonate for nickel precipitation has poor filtration performance, high moisture content of filter cake, difficult post-treatment process, high sodium and sulfate content, and it is difficult to synthesize high-quality nickel carbonate; using ammonium bicarbonate for nickel precipitation is easy to filter, NH 4 + Great impact on the system, low nickel recovery rate, and difficult wastewater treatment. Contents of the invention [0003] In order to solve the above technical problems, the present invention proposes a synthesis method of nickel oxide precursor nickel carbonate. [0004] The technical solution of the present invention is: a synthesis method of nickel oxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/06C01G53/04
CPCC01G53/04C01G53/06
Inventor 曾辉丁冬久冯玉洁丁庆华魏刚陈守权任保佑
Owner JINCHUAN GROUP LIMITED
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