학술논문
高純度富鋁紅柱石粉末之製造 / Synthesis of High Purity Mullite Powders
Document Type
Article
Author
Source
鑛冶：中國鑛冶工程學會會刊 / Mining ＆ Metallurgy：The Bulletin of the Chinese Institute of Mining ＆ Metallurgical Engineers. Vol. 31 Issue 4, p95-104. 10 p.
Subject
Language
繁體中文
ISSN
0451-0011
Abstract
High purity mullite powders can be obtained under low temperature environment through the calcination of the sol-gel products of the Al_2O_3-SiO_2 system. The quantity and crystal size of mullite thus formed depend strongly on the crystal type and crystallinity of the Al_2O_3-SiO_2 xerogels. According to present study, the best conditions for the synthesis of mullite from sol-gel of Al_2O_3-SiO_2 system will be: 1. Al_2O_3 contents in the solution: 74~75 wt% 2. reaction temperature: 25°C 3. reaction pH: 8.8~9.5 4. calcination temperature (mullitization): 1300°C The mullite powder product can be made with purity ＞93 wt%, and particle size 30 nm.