Preparation method for powder granules of ceramic product by applying wet mixing granulator

Abstract

The invention provides a preparation method for powder granules of a ceramic product by applying a wet mixing granulator. The method comprises the following steps: subjecting to-be-processed fine powder to measuring and weighing according to requirements of equipment, then adding the powder into a granulator, adding water or an adhesive solution according to a required proportion, carrying out granulating under stirring, and then adding a bit of powder in the later period of granulating to polish the granules so as to complete molding of the granules in the granulator. According to the invention, during preparation, the fine powder agglomerates since the surface of the fine powder is wetted by a solution, and through complete mixing and stirring by a granulating knife, granule sizes gradually form and grow up, thereby forming uniform wet granules; granulating efficiency of the powder is greatly improved; powder stacking density per unit volume is increased; and a green body and a product press-molded from the powder are improved in performances and can be convenient to produce.

Description

technical field [0001] The invention belongs to the field of electric porcelain material production, and relates to a method for preparing powder particles of ceramic products by using a wet mixing granulator. Background technique [0002] The electric ceramic material in the electrical ceramic insulating material is mainly prepared by mixing aluminosilicate such as clay, feldspar, quartz (or alumina raw material), processed into a certain shape, and fired at a higher temperature. [0003] There are many varieties of electric porcelain products, and their shapes and sizes are also very different, which prompts the formation of different process methods in the manufacturing process of the industry. The traditional process method, and the dry isostatic pressing process adopted in recent years has become a new process manufacturing method for the manufacture of high-sized and difficult products. In the process of isostatic pressing, in the main process of powder preparation, b...

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Problems solved by technology

[0004] At present, the preparation of powder materials for the production of electric porcelain is carried out by spray drying tower equipment. Most of them work in the reverse-cocurrent flow of pressure atomizer or parallel flow of atomization wheel. The equipment is complicated and expensive. The powder particles are in the state of hollow spheres, and the particle packing density per unit volume is not high, which in turn affects the dry strength of the green body and the electromechanical and thermal properties of the product.