Preparation method of low-impurity and high-solubility basic nickel carbonate

A high solubility, nickel carbonate technology, applied in nickel carbonate and other directions, can solve the problems of poor solubility of molybdenum oxide/phosphoric acid, high solubility, low crystallinity, etc., to improve product uniformity, good stability, and low product impurities. Effect

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

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Problems solved by technology

For the current demand for basic nickel carbonate with low impurities and good solubility of molybdenum oxide / phosphoric acid, a product with small particles, low crystallinity, low impurities and high solubility is required. Currently, the products on the market generally have impurities Na, S Taller and lumpier, resulting in poor molybdenum oxide / phosphoric acid solubility issues

Method used

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  • Preparation method of low-impurity and high-solubility basic nickel carbonate
  • Preparation method of low-impurity and high-solubility basic nickel carbonate
  • Preparation method of low-impurity and high-solubility basic nickel carbonate

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preparation example Construction

[0018] A kind of preparation method of the basic nickel carbonate of low impurity, high solubility of the present invention, comprises the following steps:

[0019] (1) preparation contains the salt solution of nickel ion; The nickel salt in the salt solution containing nickel ion is one or more in nickel chloride, nickel sulfate, nickel nitrate; Concentration of nickel ion in the salt solution containing nickel ion It is 120g / L-130g / L.

[0020] (2) prepare salt solution containing carbonate; the concentration of carbonate in the salt solution containing carbonate is 200g / L-220g / L. Preferably, the salt solution containing carbonate is sodium carbonate solution.

[0021] (3) The salt solution containing nickel ions in step (1) and the salt solution containing carbonate in step (2) are respectively passed through a large centrifugal pump to adopt a parallel flow mode large flow rate, and quickly add to the reaction kettle for coprecipitation Reaction, reaction temperature, sti...

Embodiment 1

[0026] Add nickel ion-containing salt solution with a nickel ion concentration of 120g / L and carbonate-containing salt solution with a carbonate concentration of 220g / L to the 6m 3 Co-precipitation reaction was carried out in the reactor to obtain the mixture, and the diameter of the stirring blade of the reactor was 660mm; the reactor was double-layer stirred, and the feed pipe of the reactor was located at the top of the reactor. The feed flow rate of the salt solution containing nickel ions added to the reactor is 300kg / h, the feed rate of the salt solution containing carbonate radicals added to the reactor is 420kg / h, and the process conditions of the co-precipitation reaction are: The pH is 8.2-8.4, the reaction temperature is 50° C., the reaction time is 7 minutes, and the reaction speed is 170 r / min. Put the mixture into a filter press for two filter press washes to obtain a basic nickel carbonate wet material; the water temperature for the filter press wash is 50°C, an...

Embodiment 2

[0030] Add nickel ion-containing salt solution with a nickel ion concentration of 130g / L and carbonate-containing salt solution with a carbonate concentration of 200g / L to the 6m 3 Co-precipitation reaction is carried out in the reactor to obtain the mixture, the diameter of the stirring blade of the reactor is 680 mm; the reactor is double-layer stirring, and the feed pipe of the reactor is located at the top of the reactor. The feed flow rate of the salt solution containing nickel ions added to the reactor is 300kg / h, the feed rate of the salt solution containing carbonate radicals added to the reactor is 480kg / h, and the process conditions of the co-precipitation reaction are: The pH is 8.2-8.35, the reaction temperature is 53° C., the reaction time is 8 minutes, and the reaction speed is 190 r / min. Put the mixture into a filter press for two filter press washes to obtain a basic nickel carbonate wet material; the water temperature for the filter press wash is 55°C, and the...

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Abstract

The invention relates to a preparation method of low-impurity and high-solubility basic nickel carbonate. The preparation method comprises the following steps: preparing a salt solution containing nickel ions; preparing a salt solution containing carbonate; adding the salt solution containing the nickel ions and the salt solution containing the carbonate radicals into a reaction kettle in a parallel flow manner for coprecipitation reaction to obtain a mixture, wherein the process conditions of the coprecipitation reaction are as follows: the pH value of the reaction is 8.2-8.5, the reaction temperature is 50 DEG C to 53 DEG C, the reaction time is 7 minutes to 8 minutes, and the reaction rotating speed is 170 r/min to 190 r/min; and carrying out filter pressing washing and flash evaporation drying on the mixture to obtain low-impurity and high-solubility basic nickel carbonate. The content of Na and the content of S in the product prepared through the method are both smaller than 100 ppm, primary particles of the product are small, caking is avoided, and the solubility of molybdenum oxide and phosphoric acid is good.

Description

technical field [0001] The invention relates to the technical field of basic nickel carbonate preparation, in particular to a method for preparing basic nickel carbonate with low impurity and high solubility. Background technique [0002] Basic nickel carbonate is an important inorganic chemical product, which is widely used in electroplating, catalyst, pigment 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. For the current demand for basic nickel carbonate with low impurities and good solubility of molybdenum oxide / phosphoric acid, a product with small particles, low crystallinity, low impurities and high solubility is required. Currently, the products on the market generally have impurities Na, S Higher and lumpier, resulting in poor solubility of molybdenum oxide / phosphoric acid. Contents of the invention [0003] For the problems in the prior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/06
CPCC01G53/06C01P2002/72C01P2006/80
Inventor 许开华唐洲龙小林李涛白亮
Owner JINGMEN GEM NEW MATERIAL
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