According to financial news on August 21, 2024, Tianyancha intellectual property information showed that Shaanxi Baoguang Ceramics Technology Co., Ltd. obtained a project called "a 7-13um particle size calcined alpha alumina powder and high-density ceramics" "Preparation Method", the authorization announcement number is CN116675520B, and the application date is June 2023.
The patent abstract shows that the invention discloses a method for preparing calcined alpha alumina powder with a particle size of 7-13um and high-density ceramics, which includes the following process: adding calcined alpha alumina powder with a particle size of 1.5-2.5um After sintering additives, a tape casting process is used to make 0.5-1mm green porcelain sheets; the green porcelain sheets are debonded and sintered into thin ceramic sheets, and then ground to obtain calcined alpha alumina powder with a particle size of 7-13um. Wet-mix the calcined alpha alumina powders of 7-13um and 1.5-2.5um particle size according to the mass ratio of (2-8): (2-8) to obtain a mixed slurry; the prepared mixed slurry is produced. Granulate to form granulated material; use isostatic pressing to press the granulated material into a solid blank; keep the solid blank at 1650±10℃ for 2 hours and sinter to obtain insulating ceramics. Calcined alpha alumina powder with a particle size of 7-13um can be prepared conveniently and quickly to obtain high-density ceramics.
Source: Financial Industry
