Method for producing amido nickel sulphonic acid

A technology of nickel sulfamate and sulfamic acid, applied in the direction of sulfamic acid, nitrogen and non-metallic compounds, etc., can solve the problems of difficult washing of sodium sulfate, low main grade of products, high cost, etc., and achieve easy washing and reduce Effects of production cost and productivity increase

Active Publication Date: 2008-06-11
JINCHUAN GROUP LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above process has the following disadvantages: 1. The use of hydrogen peroxide oxidation, the method of dissolving nickel powder with sulfamic acid and the method of dissolving nickel flakes with nitric acid all require metal nickel powder or nickel flakes as raw materials, and the cost is relatively high; 2. Dissolution and transformation are also required. The process is long 3. The nickel salt solution is directly converted to alkali. The problem is that the sodium sulfate in nickel carbonate and nickel hydroxide is difficult to wash, and the main grade of the product is low.

Method used

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  • Method for producing amido nickel sulphonic acid

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Effect test

Embodiment 1

[0032] 1. Use nickel sulfate or nickel chloride solution with a concentration of 80g / L, add saturated ammonia water at a temperature below 50°C, stop ammonia flow when the ammonia content of the complex solution generated in the reaction solution is 25-35g / L gas, to obtain blue nickel-ammonia complex solution ①;

[0033] 2. According to process flow chart 1, get nickel-ammonia complex solution 1. and sodium hydroxide solution, the ratio of the two is nickel: the mol ratio of sodium hydroxide is 1: 2, under the temperature condition below 80 ℃, constantly stir and mix , to obtain nickel hydroxide slurry ①, filter cake ① and filtrate ① are obtained after filtering and washing, and filter cake ① is slurried with pure water to obtain slurry ②; sulfamic acid is prepared into 2mol / The sulfamic acid solution of L; Filtrate 1. returns to reclaim ammonia, reuses;

[0034] 3. Put the slurry obtained in process 2 ② and 2mol / L sulfamic acid solution in a molar ratio of 1:1, and slowly a...

Embodiment 2

[0037] Adopt purified nickel sulfate solution (80g / L), saturated ammonia and industrial sodium hydroxide (120g / L), for subsequent use;

[0038] 1. Get above-mentioned nickel sulfate solution 1L (80g / L), add saturated ammonia water at 50 ℃, when the ammonia content of complexing solution generated in the reaction solution is 25-35g / L, stop flowing ammonia gas, obtain blue color Nickel-ammonia complex solution ①, the time of adding ammonia water is 2 minutes at this time, the volume is increased to 1.5 times, and the nickel ion concentration is 52.6g / L.

[0039] 2. Take 1.5L of nickel-ammonia complex solution, add about 0.9L of industrial sodium hydroxide (120g / L) at an even speed, the solution gradually becomes green suspension, stir constantly, stop adding alkali when the pH reaches 8-8.5, and filter to obtain Nickel hydroxide slurry, the filtrate is treated separately to recover nickel, the filter cake is washed with pure water, and then the obtained filter cake is slurried w...

Embodiment 3

[0043]1. Use the nickel sulfate or nickel chloride solution that concentration is 80g / L, add saturated ammoniacal liquor at the temperature condition of 40 ℃, stop feeding ammonia when the ammonia content of complex solution generated in the reaction solution is 30g / L, obtain Blue nickel ammonium complex solution ①;

[0044] 2. According to process flow chart 1, get nickel-ammonia complex solution 1. and sodium hydroxide solution, the ratio of the two is nickel: the mol ratio of sodium hydroxide is 1: 2, under the temperature condition below 80 ℃, constantly stir and mix , to obtain nickel hydroxide slurry ①, after filtering and washing, filter cake ① and filtrate ① are obtained, and the filter cake ① is slurried with pure water to obtain slurry ②; sulfamic acid is prepared into 2mol / The sulfamic acid solution of L; Filtrate 1. returns to reclaim ammonia, reuses; Its reaction process is:

[0045] 3. Put the slurry obtained in process 2 ② and 2mol / L sulfamic acid solution in ...

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Abstract

The invention relates to a process for producing nickel sulfamic acid, which is characterized in that the preparation process comprises (1) nickel sulfate or nickel chloride is carried on nickel ammonia complex reaction with ammonia to obtain nickel ammonia complex solution, (2) nickel hydroxide is prepared by the reaction of the produced nickel ammonia complex solution and sodium hydrate, (3) the produced nickel hydroxide solution is washed and filtered, (4) nickel sulfamic acid solution is produced by the reaction of the filtered nickel hydroxide solution and sulfamic acid, and (5) nickel sulfamic acid is prepared by condensing and crystallizing nickel sulfamic acid solution. The process of the invention has the advantages that the cost is reduced by producing through combining with nickel sulfate, the product purity is high, the process condition is simple and the reaction endpoint is clear.

Description

Background technique [0001] The invention relates to a method for producing nickel sulfamate. Background technique [0002] Nickel sulfamic acid, the scientific name Nickel sulfamic acid, the molecular formula is Ni(NH 2 SO 3 ) 2 4H 2 O, the molecular weight is 322.81. It is green crystal or light blue granular powder, the solution is dark green, easy to deliquescence and soluble in water. It is an organic nickel salt, which is a mixed crystal of nickel, sulfamate and water. Its active ingredient is nickel sulfamate, and its quality is nickel or Ni(NH 2 SO 3 )2·4H 2 The content of O is indicated. There are several production processes at present: one is hydrogen peroxide oxidation, and the sulfamic acid dissolves nickel powder process, which is called the hydrogen peroxide method; the other is that nitric acid dissolves nickel flakes and transforms them into nickel carbonate or nickel hydroxide, and reacts with sulfamic acid The method process is called the nitric a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/096
Inventor 蔺国盛陈彩霞郭小英
Owner JINCHUAN GROUP LIMITED
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