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Spherical cobalt oxalate powder and production method thereof

A technology of cobalt oxalate powder and manufacturing method, which is applied in the field of metallurgy and chemical industry, and achieves the effects of good shape, uniform distribution, and controllable shape and structure

Active Publication Date: 2009-11-04
GEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although dendritic cobalt oxalate has fewer impurities and mature reaction control in production, it is inferior to spherical particles in terms of good fluidity, high packing density, and large specific surface area.

Method used

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  • Spherical cobalt oxalate powder and production method thereof
  • Spherical cobalt oxalate powder and production method thereof
  • Spherical cobalt oxalate powder and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Produced 0.5MCoCl 2 solution and 0.5M K 2 C 2 o 4 solution, before the reaction, equimolar amounts of each solution were preheated to 25°C, and K 2 C 2 o 4 Join CoCl 2 In the solution, adjust the pH value to 6-7, stir at constant temperature, react for 15-30 minutes, separate and filter the precipitated powder from the solution, wash with clean water, and dry at 100-150°C for 4 hours to obtain spherical cobalt oxalate with a particle size of about 7um , suitable for general powder metallurgy industry, battery industry, etc.

Embodiment 2

[0033]Produced 0.5MCoCl 2 solution and 0.5M K 2 C 2 o 4 solution, before the reaction, equimolar amounts of each solution were preheated to 40°C, and K 2 C 2 o 4 Join CoCl 2 In the solution, adjust the pH value to 6-7, stir at constant temperature, react for 15-30 minutes, separate and filter the precipitated powder from the solution, wash with clean water, and dry at 100-150°C for 4 hours to obtain spherical cobalt oxalate with a particle size of 6um , suitable for general powder metallurgy industry, battery industry, etc.

Embodiment 3

[0035] 1MCoCl 2 solution and 1M K 2 C 2 o 4 solution, before the reaction, equimolar amounts of each solution were preheated to 25°C, and K 2 C 2 o 4 Join CoCl 2 In the solution, adjust the pH value to 6-7, stir at constant temperature, react for 15-30 minutes, separate and filter the precipitated powder from the solution, wash with clean water, and dry at 100-150°C for 4 hours to obtain spherical oxalic acid with a particle size of about 10um Cobalt, suitable for general powder metallurgy industry, battery industry, etc.

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Abstract

The invention relates to a spherical cobalt oxalate powder and a production method thereof. The average Riley sphericity value of the cobalt oxalate powder is above 0.9, the average grain diameter of the cobalt oxalate powder is 0.5-20mum, and the spherical cobalt oxalate powder is prepared by the liquid phase deposition of potassium oxalate and water soluble cobalt salt in a solution with the pH value over 1.5-8. The spherical cobalt oxalate powder prepared by the producing method has fewer impurities and better appearance, and can be prepared by a simple and efficient production method.

Description

technical field [0001] The invention relates to the field of metallurgy and chemical industry, more specifically, the invention relates to a metal powder and a manufacturing method thereof. Background technique [0002] Cobalt powder and its oxide powder are important raw materials for the production of battery electrodes, high hardness alloys, diamond tools, catalyst carriers and other products, and are widely used in the field of metallurgy and chemical industry. The cobalt salt containing carbonic acid radicals is an important precursor for the production of cobalt powder and its oxide powder, and these precursors include cobalt oxalate and cobalt carbonate. In addition, in the field of metallurgy, cobalt oxalate has other uses. [0003] The traditional industrial production method of cobalt oxalate is to adopt (NH 4 ) 2 C 2 o 4 and CoCl 2 As a raw material, it is prepared by solution mixing and precipitation methods. The precipitation reaction of the traditional p...

Claims

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Application Information

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IPC IPC(8): C07C55/07C07C51/41
Inventor 何显达许开华
Owner GEM CO LTD
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