Method for preparing nickel aminosulfonate with solid sulfamic acid

A technology of nickel sulfamic acid and sulfamic acid, applied in the direction of sulfamic acid, nitrogen and non-metallic compounds, etc., can solve the problems of low nickel content in nickel sulfamate solution, increase production process, increase water consumption, etc. Achieve the effects of shortening the production cycle, reducing the acid-dissolving process, and reducing steam consumption

Active Publication Date: 2014-05-28
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the nickel raw materials for the preparation of nickel sulfamate are all high-purity high matte or high-purity nickel carbonate as raw materials, and the cost is relatively high
And when using sulfamic acid solution to back-extract nickel-containing loaded organically to prepare nickel sulfamic acid, solid sulf

Method used

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  • Method for preparing nickel aminosulfonate with solid sulfamic acid
  • Method for preparing nickel aminosulfonate with solid sulfamic acid
  • Method for preparing nickel aminosulfonate with solid sulfamic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Take cobalt sulfate raffinate (containing crude nickel sulfate) as raw material, remove impurities to obtain nickel-containing raw material solution, nickel content: 47.5g / L;

[0027] 2) React the organic phase of P204 and diluent (ratio: 1:3) with 35% sodium hydroxide solution to make sodium soap, with a saponification rate of 75%;

[0028] 3) reacting the nickel-containing raw material solution in step 1 with the sodium soap prepared in step 2 to obtain a nickel-loaded organic phase;

[0029] 4) Wash the nickel-loaded organic phase with 0.7g / L sulfuric acid, and the O / A ratio is 10:1;

[0030] 5) Wash the nickel-loaded organic phase with 5g / L sulfamic acid, the ratio of O / A is 1:1, and put the loaded organic phase into the high-level storage tank after washing;

[0031] 6) Put the solid sulfamic acid into the extraction reactor, put 2L of pure water into the organic clarification tank, and the nickel-loaded organic phase obtained in step 5 is also put into the org...

Embodiment 2

[0036] 1) The thick nickel hydroxide solid is leached with sulfuric acid to obtain a nickel sulfate leaching solution, which is filtered and removed to obtain a nickel-containing raw material solution containing 52.3g / L of nickel.

[0037] 2) React the organic phase of P204 and diluent (ratio 1:3) with 32% sodium hydroxide solution to make sodium soap, with a saponification rate of 75%;

[0038] 3) reacting the raw material solution in step 1 with the sodium soap prepared in step 2 to obtain a nickel-loaded organic phase;

[0039] 4) Wash the nickel-loaded organic phase with 0.85g / L sulfuric acid, and the O / A ratio is 11:1;

[0040] 5) Wash the nickel-loaded organic phase with 10g / L sulfamic acid, the ratio of O / A is 3:1, and put the loaded organic phase into the high-level storage tank after washing;

[0041] 6) Put the solid sulfamic acid into the extraction reactor, put 3L pure water into the organic clarifier, and the nickel-loaded organic phase obtained in step 5 is also...

Embodiment 3

[0046] 1) Take copper sulfate raffinate (containing crude nickel sulfate) as raw material, remove impurities, and obtain nickel-containing raw material solution containing nickel: 51.5g / L;

[0047] 2) The organic phase of P204 and diluent (1:3.5 ratio) is reacted with 45% sodium hydroxide solution to make sodium soap, and the saponification rate is 90%;

[0048] 3) reacting the raw material solution in step 1 with the sodium soap prepared in step 2 to obtain a nickel-loaded organic phase;

[0049] 4) Wash the nickel-loaded organic phase with 0.65g / L sulfuric acid, and the O / A ratio is 12:1;

[0050] 5) Wash the nickel-loaded organic phase with 6g / L sulfamic acid, the ratio of O / A is 3:1, and put the loaded organic phase into the high-level storage tank after washing;

[0051] 6) Put the solid sulfamic acid into the extraction reactor, put 3L pure water into the organic clarifier, and the nickel-loaded organic phase obtained in step 5 is also put into the organic clarifier thr...

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Abstract

The invention discloses a method for preparing nickel aminosulfonate with solid sulfamic acid, comprising the following steps: carrying out P204 extraction on a nickel-containing solution to obtain a nickel-containing loaded organic phase; directly carrying out back extraction on the nickel-containing loaded organic phase with solid sulfamic acid to convert the nickel-containing loaded organic phase to a high concentration of a nickel aminosulfonate solution, evaporating, crystallizing, centrifuging, drying and screening to obtain a nickel aminosulfonate product. The invention has beneficial effects as follows: as resources are fully utilized and solid sulfamic acid is directly used in the reaction, an acid dissolution process is reduced, cost is saved and labor intensity of operators is also minimized; due to over-dose of sulfamic acid during the back extraction, the prepared nickel aminosulfonate solution has a high concentration (150g/L-200g/L), evaporation time is short, steam consumption is reduced, and production cycle is shortened.

Description

technical field [0001] The invention belongs to the field of nickel-containing chemical production, and relates to a preparation method of nickel sulfamate. Background technique [0002] The application potential of nickel sulfamate is huge, especially it has greater advantages in electroplating, and the demand is increasing. At present, the nickel raw materials for preparing nickel sulfamate are all high-purity nickel matte or high-purity nickel carbonate as raw materials, and the cost is relatively high. And when using sulfamic acid solution to back-extract nickel-containing loaded organically to prepare nickel sulfamic acid, solid sulfamic acid will be dissolved into an aqueous solution, which increases the production process and increases water consumption; the nickel sulfamic acid obtained simultaneously The nickel content in the solution is low (about 50g / L), which prolongs the evaporation time in the evaporation process, resulting in waste of steam. Contents of the...

Claims

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Application Information

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IPC IPC(8): C01B21/096
Inventor 杨志强赵德李宝平明键伟秦雪萍于红
Owner JINCHUAN GROUP LIMITED
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