Abstract:

Porous cordierite was prepared with powder of light-burned magnesia，waste nozzle and silica fume as raw materials.The paper analyzed the effects of magnesium oxide on bulk density,crystialline composition and microstructure of the porous cordierite，which were characterized by XRD and SEM.The result shows that the porous cordierite material with cordierite as major crystal phase can be prepared by high\|temperature solid\|phase sintering method.But excessive addition of light\|burned magnesite will reduce the porosity and increase the boltonite phase.