Electronic ceramics are ceramic electronic components in the electronics and semiconductor industries. The main materials of electronic ceramics include aluminum oxide, aluminum nitride, silicon carbide, zirconium oxide, silicon nitride, etc. The precision and quality requirements for electronic ceramic structural components and functional ceramics are relatively high, and the sintering process of electronic ceramics is an important part of ensuring ceramic quality. Sintering electronic ceramics not only requires special kiln equipment, but also excellent isolation materials for assistance. High purity 99.8-99.9% white aluminum oxide powder F80-F220 are used as prelay sand in the ceramic green body sintering process.