Process for synthesis of basic nickel carbonate from diacidic base

A technology of nickel carbonate and binary base, applied in the direction of nickel carbonate, etc., can solve problems such as non-recyclable, high volatility of ammonia, and hazards to the production environment, and achieve the effects of saving raw material costs and increasing OH- concentration

Inactive Publication Date: 2016-03-09
JIANGXI NUCLEAR IND XINGZHONG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are two methods for the synthesis of basic nickel carbonate in domestic enterprises. One synthesis process is to use ammonium carbonate or ammonium bicarbonate and nickel salt for precipitation reaction. During the synthesis of this method, a large amount of ammonia and nickel form a soluble complex, and nickel The precipitation is not complete, the degradation cost of ammonia is high during wastewater treatment, and the volatility of ammonia is high, which causes great harm to the production environment
The other is to use soda ash and ...

Method used

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  • Process for synthesis of basic nickel carbonate from diacidic base
  • Process for synthesis of basic nickel carbonate from diacidic base

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A process for synthesizing basic nickel carbonate with a binary base, the specific steps are:

[0028] (1) Configuration solution:

[0029] The nickel sulfate is configured into 2000L of an aqueous solution containing 60g / L of nickel and 3000L of mixed alkali, which contains 15g / L of sodium hydroxide and 56g / L of sodium carbonate. After the dissolution is complete, the two solutions will be filtered with a chamber filter respectively;

[0030] (2) Synthesis:

[0031] The two solutions of step (1) are synthesized by the method of adding the solutions. During the process, the pH is controlled to be 7.8, and when the synthesis is completed, the pH is 8.9 to obtain a basic nickel carbonate slurry. The synthesis reaction equation is:

[0032] ;

[0033] (3) Aging:

[0034] The basic nickel carbonate slurry obtained in step (2) continues to be stirred and aged for 1 hour;

[0035] (4) Washing:

[0036] Use a horizontal belt filter to wash the basic nickel carbonate obtained in step (3) to...

Embodiment 2

[0042] A process for synthesizing basic nickel carbonate with a binary base, the specific steps are:

[0043] (1) Configuration solution:

[0044] The nickel sulfate is configured into 1500L of an aqueous solution containing 80g / L of nickel and 3000L of mixed alkali, which contains 20g / L of sodium hydroxide and 53g / L of sodium carbonate. After the dissolution is complete, the two solutions will be filtered with a chamber filter respectively;

[0045] (2) Synthesis:

[0046] The two solutions in step (1) are synthesized by the method of adding the solution. During the process, the pH is controlled to be 8.0, and the pH is 8.6 when the synthesis is completed to obtain a basic nickel carbonate slurry. The synthesis reaction equation is:

[0047] ;

[0048] (3) Aging:

[0049] The basic nickel carbonate slurry obtained in step (2) is continuously stirred and aged for 1.5 hours;

[0050] (4) Washing:

[0051] Use a horizontal belt filter to wash the basic nickel carbonate obtained in step (3) t...

Embodiment 3

[0057] A process for synthesizing basic nickel carbonate with a binary base, the specific steps are:

[0058] (1) Configuration solution:

[0059] The nickel sulfate is configured into 1200L of an aqueous solution containing 100g / L of nickel and 2500L of mixed alkali, which contains 20g / L of sodium hydroxide and 67g / L of sodium carbonate. After the dissolution is complete, the two solutions will be filtered with a chamber filter respectively;

[0060] (2) Synthesis:

[0061] The two solutions in step (1) are subjected to a synthesis reaction. The solution adding method is parallel addition. During the process, the pH=8.3 is controlled, and the pH=8.9 when the synthesis is completed, to obtain the basic nickel carbonate slurry. The synthesis reaction equation is:

[0062] ;

[0063] (3) Aging:

[0064] The basic nickel carbonate slurry obtained in step (2) is continuously stirred and aged for 1.2 hours;

[0065] (4) Washing:

[0066] Use a horizontal belt filter to wash the basic nickel car...

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Abstract

The present invention discloses a process for synthesis of basic nickel carbonate from a diacidic base, according to the process, a sodium carbonate and sodium hydroxide mixed diacidic base is used for precipitation reaction with a soluble nickel salt, the reaction is one-step room temperature reaction, operation is easy, the base dosage is reduced by 20 to 30% compared with a pure soda base synthesis process, the environment is not polluted, and Na in the obtained basic nickel carbonate product (containing 40% of Ni) can be 100ppm or less.

Description

technical field [0001] The invention relates to a synthesis process of basic nickel carbonate, in particular to a process for synthesizing basic nickel carbonate with a binary base. Background technique [0002] At present, there are two methods for the synthesis of basic nickel carbonate in domestic enterprises. One synthesis process is to use ammonium carbonate or ammonium bicarbonate and nickel salt for precipitation reaction. During the synthesis of this method, a large amount of ammonia and nickel form a soluble complex, and nickel The precipitation is not complete, the degradation cost of ammonia is high during wastewater treatment, and the volatility of ammonia is high, which has caused great harm to the production environment. The other is to use soda ash and nickel salt solution to carry out precipitation reaction. When this method is synthesized, the pH value needs to be adjusted to more than 8.5, so that the nickel can be basically precipitated completely. At this...

Claims

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Application Information

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IPC IPC(8): C01G53/06
CPCC01G53/06C01P2006/80
Inventor 曾昭崐胡昌文蒋良华龙长江陈小娟叶为辉蒲玲汤森进张小明
Owner JIANGXI NUCLEAR IND XINGZHONG NEW MATERIALS
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