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Preparation method of basic nickel carbonate with low fluidity and high solubility

A high-solubility, low-fluidity technology, applied in nickel carbonate and other directions, can solve the problems of flying dust and easy material leakage, and achieve the effect of obvious material leakage, less equipment corrosion, and reducing the total feeding time.

Pending Publication Date: 2020-11-03
JINGMEN GEM NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing basic nickel carbonate product has too good fluidity, and the material is easy to leak at the connection of the transportation equipment, resulting in the flying of dust in the environment. Therefore, a basic nickel carbonate product with low fluidity and faster solubility is needed. This can enable factories to significantly increase production efficiency

Method used

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  • Preparation method of basic nickel carbonate with low fluidity and high solubility
  • Preparation method of basic nickel carbonate with low fluidity and high solubility

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preparation example Construction

[0017] A kind of low fluidity of the present invention, the preparation method of the basic nickel carbonate of high solubility comprises the following steps:

[0018] (1) Preparation of nickel salt solution: nickel sulfate crystals are dropped into water to obtain nickel salt solution; the nickel salt in the nickel salt solution is one or more of nickel chloride, nickel sulfate, nickel nitrate; nickel in the nickel salt solution The ion concentration is 105g / L-110g / L.

[0019] (2) Prepare carbonate solution: put sodium carbonate solid into water to prepare carbonate solution; the concentration of carbonate in the carbonate solution is 210g / L-220g / L. Preferably, the carbonate solution is sodium carbonate solution.

[0020] (3) The nickel salt solution in step (1) and the carbonate solution in step (2) are accurately added to the reaction kettle with the bottom liquid through the metering pump in parallel flow to carry out the co-precipitation reaction. Liquid is the nickel s...

Embodiment 1

[0025] Add the nickel salt solution with a nickel ion concentration of 105g / L and the sodium carbonate solution with a concentration of 210g / L into the 6m 3 Co-precipitation reaction was carried out in the reaction kettle to obtain basic nickel carbonate slurry, the bottom liquid was nickel salt solution diluted with water, and the addition amount of the bottom liquid was 1.2m 3 , the diameter of the stirring blade of the reactor is 600mm; the reactor is single-layer stirring, and the feeding pipe of the reactor is flush with the single-layer stirring blade. The concentration of nickel ions in the bottom liquid is 21g / L; the feed flow rate of nickel salt solution added to the reactor is 350kg / h, and the feed rate of sodium carbonate solution added to the reactor is adjusted to 455kg according to the actual pH value of the reactor / h-500kg / h, the technological conditions of the co-precipitation reaction are: the reaction pH is 8.05-8.25, the reaction temperature is 53°C, the re...

Embodiment 2

[0029] Add a nickel salt solution with a nickel ion concentration of 110g / L and a sodium carbonate solution with a concentration of 220g / L into the 6m 3 Co-precipitation reaction was carried out in the reaction kettle to obtain basic nickel carbonate slurry, the bottom liquid was nickel salt solution diluted with water, and the addition amount of the bottom liquid was 1.2m 3 , The diameter of the stirring blade of the reactor is 620mm; the reactor is a single-layer stirring, and the feeding pipe of the reactor is flush with the single-layer stirring blade. The concentration of nickel ions in the bottom liquid is 22g / L; the feed flow rate of nickel salt solution added to the reactor is 350kg / h, and the feed rate of sodium carbonate solution added to the reactor is adjusted to 500kg according to the actual pH value of the reactor / h-600kg / h, the technological conditions of the co-precipitation reaction are: the reaction pH is 8.15-8.35, the reaction temperature is 53°C, the reac...

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Abstract

The preparation method of the basic nickel carbonate with low fluidity and high solubility comprises the following steps: (1) adding nickel sulfate crystals into water to obtain a nickel salt solution; (2) adding the sodium carbonate solid into water to prepare a carbonate solution; (3) adding the nickel salt solution obtained in the step (1) and the carbonate solution obtained in the step (2) into a reaction kettle with a base solution in a parallel flow manner, and carrying out a coprecipitation reaction to obtain basic nickel carbonate slurry; (4) pumping the basic nickel carbonate slurry into a filter press for filter pressing and washing to obtain a basic nickel carbonate wet material; and (5) carrying out flash evaporation drying on the basic nickel carbonate wet material to obtain the basic nickel carbonate with low fluidity and high solubility. The method disclosed by the invention has obvious effects of improving the phenomena of material leakage and material leakage at the joint of the equipment and controlling dust flying.

Description

technical field [0001] The invention relates to the technical field of preparation of basic nickel carbonate, in particular to a method for preparing basic nickel carbonate with low fluidity and high solubility. Background technique [0002] Basic nickel carbonate is an important inorganic chemical product, which is widely used in electroplating, industrial catalysts, pigments and other industries. High-quality basic nickel carbonate can also be used as an intermediate in the production of nickel oxide, nickel powder and other organic nickel salts. The existing basic nickel carbonate product has too good fluidity, and the material is easy to leak at the connection of the transportation equipment, resulting in the flying of dust in the environment. Therefore, a basic nickel carbonate product with low fluidity and faster solubility is needed. This can allow factories to significantly increase production efficiency. Contents of the invention [0003] Aiming at the problems i...

Claims

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Application Information

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IPC IPC(8): C01G53/06
CPCC01G53/06C01P2006/80C01P2006/10C01P2004/61
Inventor 许开华唐洲龙小林李涛白亮
Owner JINGMEN GEM NEW MATERIAL
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