Spiral-hemisphere branch combination type intelligent silicon nitride dry granulation integrated device

Abstract

The invention discloses a spiral-hemisphere branch combination type intelligent silicon nitride dry granulation integrated device. The spiral-hemisphere branch combination type intelligent silicon nitride dry granulation integrated device comprises a support system, a stirring and granulation system, a feeding system, an atomization system and an intelligent control system. Due to the adoption ofa dual-granulation structure of a spiral-circular ring combined granulation structure and a semi-spherical branch combined granulation structure, the movement path of a powder body is expanded, the defect of the single movement path of the powder body is avoided, and the granulation effect is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of powder granulation, in particular to a silicon nitride powder granulation device. Background technique [0002] Silicon nitride ceramics are widely used in aerospace and military fields due to their excellent properties such as corrosion resistance, high temperature resistance, and good impact resistance. The silicon nitride granulation device is to prepare ultrafine silicon nitride powder into silicon nitride particles with a certain particle size distribution through granulation technology, so that it can be prepared with better performance during molding. The green body, so as to meet the production requirements of silicon nitride products, so that it has more mechanical properties. [0003] Existing silicon nitride ceramic granulation devices are mainly divided into wet granulation devices and dry granulation devices. In the wet granulation device, the granulation process is mainly divided into slur...

AI Technical Summary

Problems solved by technology

[0004] In the silicon nitride ceramic dry granulation device currently used, the geometric parameters and spatial parameters of the granulation structure are important factors affecting the granulation effect of the granulation equipment. The existing silicon nitride ceramic dry granulation device mainly uses vibration and stirring Type granulation devices and strong countercurrent mixing preparation devices mostly adopt a single vertical stirring granulation structure, and the granulation space structure is single. During the granulation process of this granulation structure, the three-dimensional movement path of the powder is single, and the main Drive the silicon nitride powder to move radially, but the axial movement of the powder is small, resulting in poor granulation effect of the granulation device

In addition, the existing silicon nitride ceramic dry granulation device, the driving motor is mostly fixed speed, the granulation effect of the device is single, and it cannot be changed in response to changes in the preparation requirements.

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