Preparation method of nickel oxide powder

A technology of nickel oxide powder and nickel chloride, which is applied in the direction of nickel oxide/nickel hydroxide, etc., to achieve the effects of uniform powder particle size distribution, significant economic and social benefits, and excellent electrochemical performance

Inactive Publication Date: 2011-07-06
LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

At present, the industrial preparation of oxides by spray pyrolysis, especially the application of nickel oxide powder materials, has not been reported yet.

Method used

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  • Preparation method of nickel oxide powder
  • Preparation method of nickel oxide powder
  • Preparation method of nickel oxide powder

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preparation example Construction

[0016] A method for preparing nickelous oxide powder. In the preparation process, nickel salt solution is atomized, and then thermally decomposed at high temperature to obtain nickelous oxide powder material; the steps of the preparation process include:

[0017] 1) Ingredients: Nickel salt solution (nickel chloride, nickel nitrate, nickel sulfate) is prepared according to the nickel concentration of 10-240g / L.

[0018] 2) Atomization: Atomize the solution in ingredient 1) into droplets of 0.5-100 μm.

[0019] 3) Pyrolysis: pyrolyze the liquid droplets obtained in 2) for 1-30 minutes at 300-1200°C and oxygen partial pressure of 1kPa-8kPa.

Embodiment 1

[0021] Add a nickel chloride solution with a nickel concentration of 10g / L into the liquid storage tank and atomize it through an atomizer; heat the atomized droplets for 10 minutes at a temperature of 650°C and an oxygen partial pressure of 2kPa. The resulting nickel oxide has a uniform particle size distribution, a D50 of 2 μm, and a bulk density of 0.9 g / cm 3 .

Embodiment 2

[0023] Add a nickel chloride solution with a nickel concentration of 100g / L into the liquid storage tank and atomize it through an atomizer; heat the atomized droplets for 10 minutes at a temperature of 650°C and an oxygen partial pressure of 3kPa. The resulting nickel oxide has a uniform particle size distribution, a D50 of 3 μm, and a bulk density of 1.0 g / cm 3 .

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Abstract

The invention provides a preparation method of nickel oxide powder, and relates to a preparation method of nickel oxide powder in the fields of battery material, catalyst, magnetic material, electronic material, ceramic and the like. The preparation method is characterized by atomizing nickel salt solution, and thermally decomposing the atomized nickel salt solution under high temperate to obtain the nickel oxide powder. The preparation method comprises the steps of: taking the nickel salt solution as a raw material, atomizing the nickel salt solution under high temperate, thermally decomposing the atomized raw material to generate NiO under controllable atmosphere, and absorbing the generated tail gas to generate regenerated acid. The method can further continuously realize the preparation process from the solution to the NiO, the granularity of the NiO powder obtained by the method is controlled within the range from 0.2 to 20 micrometers, the granularity of the powder is even in distribution, and the performance of the powder is good. The preparation method is energy-saving, environment-friendly, low in preparation cost, and good in economic benefit and social benefit.

Description

technical field [0001] A method for preparing nickelous oxide powder relates to a method for preparing nickelous oxide powder materials used in the fields of lithium-ion battery cathode materials, fuel cells, catalysts, magnetic materials, electronics, ceramics and the like. Background technique [0002] Nickel oxide powder materials are widely used in battery materials, catalyst materials, magnetic materials, electronic materials, ceramics, glass and other fields. The current industrial production method of nickelous oxide is mainly obtained by calcining nickel carbonate or hydroxide. The resulting product has problems such as large particle size, difficult to control shape, and easy sintering of the product. [0003] The high-temperature pyrolysis pulverization process is an advanced topic in the field of powder production at home and abroad. At present, the industrial preparation of oxides by spray pyrolysis, especially the application of nickel oxide powder materials, ...

Claims

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Application Information

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IPC IPC(8): C01G53/04
Inventor 闫忠强郭幸王红忠郭丹马玉芳贾跃花何艳刘世红敬春梅路维华
Owner LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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