Method for preparing superfine spherical cobalt powder

Abstract

The invention relates to a method for preparing ultrafine spherical cobalt powder. The method adopts the cobalt ore as the raw material and the homogeneous precipitation-thermal reduction method to continuously prepare the mono-disperse ultra-fine spherical cobalt powder, processes the tail liquid generated during the synthesis process, and returns the tail liquid to the production system for recycling, thereby reducing the wastewater discharge, saving the production water supply and realizing the environment-friendly industrialized mass production of the ultrafine spherical cobalt powder. The prepared product of the ultrafine cobalt powder is in the shape of spherical particle with uniform particle size and intensive distribution. The method has the advantages of simple process, low production cost, high production efficiency, no environmental pollution and suitability for industrialized mass production.

Description

technical field

[0001] The invention relates to the preparation of cobalt powder, in particular to a preparation method of ultrafine spherical cobalt powder. Background technique

[0002] Ultrafine cobalt powder has been widely used in cemented carbide, diamond tools and battery industries. The basic requirements of cemented carbide for cobalt powder are high purity, fine particle size, close to spherical particle shape, and low degree of agglomeration. This is because spherical cobalt powder has good fluidity, high packing density, lowest porosity and relative sliding friction coefficient, has excellent expansibility and extensibility, and shows good miscibility when mixed with other substances, Make the cemented carbide structure more uniform and dense. In addition, in the diamond products and battery industries, spherical cobalt powder is conducive to the uniformity of mixing materials and better product consistency.

[0003] At present, the main methods for preparing ...

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