The Synthesis of the Cordierite-mullite Composite with Mg-Rich Montmorillonite Peng Changqi;Ren Guohao;Wang Cuangdong (Assco. Prof.,Dept. of Mineral Resources & Enviroment Protection Engineering,WUT,Wuhan 430070,China.)The cordierite-mullite composite were prepared by the starting materials of natureal montmorillonite and chemical pure aids,MgCO3 and Al(OH)3. This composite has the felsitic texture and is composed of the spherulite and cementing material. They represent two types of formation mechanics respectively. The porosity of the composite decreases with the increase of temperature and tends towards a constant as the increase of soak time. The linear thermal expanding coeffient and re factory tempreture decrease with the increase of the cotent of cordierite in the composite.:Mg-rich montmorillonite;cordierite-mullite composite;felsitic texture