Manufacturing method for ceramic powdery granule with coating and granule structure of ceramic powdery granule

Abstract

The invention provides a manufacturing method for a ceramic powdery granule with a coating and a granule structure of the ceramic powdery granule. According to the manufacturing method for the ceramic powdery granule, a coating solution is sprayed in the process of formation of slurry into powder in widely-known spraying and granulation process, and after drying, the ceramic powdery granule with the coating is obtained. The manufacturing method provided by the invention enables coating particles on the surface of the ceramic granule to have good coating effect and has the characteristics of reduction in manufacturing procedures and in cost and high in manufacture benefits. The ceramic powdery granule with the coating protects burrs on the surface of the core of the slurry, overcomes the problem of low manufacture benefits, has a smooth surface, improved fluidity, and uniform quality and distribution; so the problem that the ceramic powdery granule has nonuniform quality and disorder distribution in compaction into a brick is overcome, little burr damage occurs, and a green body is not prone to deformation and cracking; and a prepared tile has more ideal surface effect.

Description

technical field [0001] The invention relates to the technical field of architectural ceramics, in particular to a method for manufacturing ceramic powder particles with a coating layer and the particle structure thereof. Background technique [0002] In the existing manufacturing technology of ceramic powder particles, the slurry is usually sprayed by a spray device and dehydrated and dried under the action of hot air to form ceramic powder particles with a certain moisture content and particle size, that is, slurry mist. Droplets and hot air form a mixed flow. The slurry droplets form a spherical shape due to surface tension, and their water evaporates and dries quickly at high temperatures, and finally dry spherical ceramic powder particles are obtained. [0003] At present, in order to make the granulation effect better and improve the overall quality of ceramic tiles after stamping the powder in the later stage, it is necessary to optimize the quality of ceramic powder p...

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Problems solved by technology

[0003] At present, in order to make the granulation effect better and improve the overall quality of ceramic tiles after stamping the powder in the later stage, it is necessary to optimize the quality of ceramic powder particles, and usually first through the binder and slurry added according to the mass ratio. The materials are mixed, stirred and ground, and then the prepared slurry is dried in a spray drying tower, but often due to the need for a large amount of binder, the manufacturing cost is high, the manufacturing process is complicated, and the manufacturing efficiency is low; The bonding medium covered by the dried ceramic powder particles is not uniform, the surface is rough, and the fluidity is poor; in addition, when pressing into bricks, the secondary powder is caused by the burr damage on the surface of the dried ceramic powder particles. , resulting in waste of materials and low manufacturing efficiency, which eventually lead to uneven quality and chaotic distribution of the produced ceramic powder particles, which makes the surface effect of the tiles unsatisfactory, and the green body has the problem of easy deformation and cracking

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