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Production method for submicron-grade high-purity nickel protoxide powder

A nickel oxide powder, sub-micron-level technology, applied in the direction of nickel oxide/nickel hydroxide, etc., can solve the problems of poor particle dispersion, unreachable fineness, and low purity of nickel oxide, and achieve particle dispersion Good, high-purity effect

Inactive Publication Date: 2015-10-28
安鹏九
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical centrifugal nozzle cannot atomize the solution into a sub-micron level. After spray pyrolysis, the nickel oxide produced is not high in purity, the particle dispersion is not good, and the fineness cannot meet the requirements of high-end manufacturing industries.

Method used

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  • Production method for submicron-grade high-purity nickel protoxide powder
  • Production method for submicron-grade high-purity nickel protoxide powder
  • Production method for submicron-grade high-purity nickel protoxide powder

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Embodiment 1

[0027] The concrete steps of the production method of submicron order high-purity nickelous oxide powder of the present invention are as follows:

[0028] (1) first prepare nickel chloride precursor solution;

[0029] (2) Add the precursor solution prepared in step (1) into an ultrasonic atomization device, and use the cavitation effect of ultrasonic waves to atomize the solution into a gaseous smoke state to form droplets of a submicron solution;

[0030] (3) The mist that step (2) produces is pumped into the high-temperature atmosphere with a blower fan to carry out spray pyrolysis to produce high-purity, sub-micron nickel oxide powder;

[0031] (4) Utilize the superfine powder recovery device to obtain the finished product by the nickelous oxide powder that step (3) produces;

[0032] (5) Utilize the absorption tower to absorb the hydrogen chloride gas to obtain a hydrochloric acid solution, which is used in step (1) to prepare the nickel chloride precursor.

[0033] In s...

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Abstract

The invention discloses a production method for submicron-grade high-purity nickel protoxide powder. The production method comprises the following steps of: (1) firstly preparing a nickel chloride precursor solution; (2) adding the precursor solution prepared in the step (1) into an ultrasonic atomization apparatus, atomizing the solution into smoke by utilizing an ultrasonic cavitation effect, and forming submicron-grade solution fogdrops; (3) sucking the fogdrops generated in the step (2) into a high-temperature atmosphere by using a fan for spray pyrolysis, and generating the submicron-grade high-purity nickel protoxide powder; (4) recovering the nickel protoxide powder generated in the step (3) by utilizing an ultrafine powder recovery apparatus, and obtaining a finished product; and (5) absorbing hydrogen chloride by utilizing an absorption tower, and obtaining a hydrochloric acid solution for preparing a nickel chloride precursor in the step (1). Nickel protoxide produced with the method is high in purity and good in particle dispersity, and the product fineness meets the submicron-grade requirement.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal powders, in particular to a production method of submicron high-purity nickelous oxide powder. Background technique [0002] Nickel oxide (NiO) appearance: light green or dark green powdery solid, properties: the specific gravity of this product is 6.6-6.8; the bulk density is 0.5-1.5; the tap density is 1.5-2.0; the Fischer particle size is 2-5 ; Insoluble in water, soluble in sulfuric acid, hydrochloric acid, nitric acid, ammonia. Uses: Used as an adhesive and colorant for enamel in the porcelain industry. The ceramic industry is used as a raw material for pigments. It is used as the raw material of nickel-zinc ferrite in the production of magnetic materials. In the glass industry, it is used as a colorant for brown glass and picture tube glass bulb. It is also a material for the manufacture of nickel salts, nickel catalysts and secondary batteries. [0003] At present, the domesti...

Claims

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Application Information

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IPC IPC(8): C01G53/04
Inventor 安鹏九田维荣
Owner 安鹏九
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