Traditional preparation technology of far infrared ceramics

Far infrared ceramic materials can be divided into infrared laser materials, infrared transmission materials and infrared radiation materials. Its core technology is the selection of raw materials, the proportion of formula and the sintering of ceramics.

The traditional manufacturing process of far-infrared ceramic materials is formed by using different infrared spectral characteristics of inorganic nonmetallic micropowder with far-infrared radiation performance (also known as far-infrared radiation ceramic powder) through certain molding and sintering processes.

There are two traditional preparation methods of far-infrared ceramic powder: liquid phase precipitation method and solid phase synthesis method. The basic process is as follows: liquid phase precipitation method: batching → dissolution → adding surfactant → precipitation → filtering and washing → dehydration → drying → airflow crushing → performance test → standby. Solid-phase synthesis process: batching and weighing → ball milling and mixing → high temperature synthesis → grinding → screening → performance testing → standby. Sintering mainly adopts conventional sintering or hot pressing sintering.

If Yingshi, feldspar and hard kaolin are used as the main raw materials, the preparation process includes: pulverizing and sieving the raw materials respectively, and mixing gray phyllite, black tourmaline, Yingshi, etc. Adding binder, granulating, drying, and firing to obtain ceramsite; Sintering rare earth and the like into ceramsite according to the above steps; Respectively calcining timely, feldspar and talc into mature materials; Far-infrared ceramics are made by mixing ceramic powder and clinker.