A spray drying tower for building ceramics and a method for preparing powder particles

Abstract

The invention provides a spray drying tower for building ceramic and a method for preparing powder particles. The spray drying tower comprises a tower body, an air inlet device arranged at the top of the tower body, an air draft device arranged at the lower end of the side wall of the tower body, a discharging opening formed in the bottom of the tower body, and sizing agent spraying devices distributed on the portion, between the air inlet device and the air draft device, in the center of the tower body in an array mode. The spray drying tower further comprises coating liquid spraying devices arranged between the air inlet device and the sizing agent spraying devices. The spray drying tower has the advantages of reducing the preparing working procedure, being easy and convenient to operate, high in palletizing and forming speed and good in palletizing quality, and saving cost. The prepared ceramic powder particles form a coating layer with the smooth surface, the coating effect is good, the surface is smooth, mobility is improved, burr damage is reduced, and preparing benefits are high. The situations that the ceramic powder particles are uneven in quality or are distributed chaotically are improved, the surface effect of manufactured ceramic tiles is ideal, and a green body does not deform or crack easily.

Description

technical field [0001] The invention relates to the technical field of architectural ceramics, in particular to a spray drying tower for architectural ceramics and a method for preparing powder particles. Background technique [0002] The spray drying tower is the equipment required for the preparation of ceramic powder particles in the production process of building ceramics. The slurry is sprayed out by the 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, the way in which the slurry droplets and hot air form a mixed flow. The slurry droplets form a spherical shape due to the effect of surface tension, and their water evaporates and dries rapidly at high temperatures, and finally dry spherical ceramic powder particles are obtained. [0003] In the existing technology, in order to improve the granulation effect and improve the overall quality of the ceramic tiles a...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, in order to improve the granulation effect and improve the overall quality of the ceramic tiles after stamping and pressing the powder, usually the binder and the slurry added according to the mass ratio are mixed, stirred and ground first. Then the prepared slurry is dried in a spray drying tower, but often due to the need for a large amount of binder, the preparation cost is high, the preparation process is complicated, and the preparation efficiency is low; and there are ceramic powders after drying due to insufficient stirring. The bonding medium covered by the material particles is not uniform, the surface is rough, and the fluidity is poor. In addition, when pressing into bricks, the burrs on the surface of the dried ceramic powder particles cause secondary powder hair, resulting in material waste and preparation. The benefit is low; and because the quality of the ceramic powder particles is different and the distribution is disorderly, the surface effect of the prepared tiles is not ideal, and the green body is prone to deformation and cracking

Images