... support and cover catalyst in the reactor ,inert alumina ball can buffer gas or liquids flush on catalyst so as ... ,high chemical stability,and excellent heat endurance ,inert alumina ball can resist high temperature,high pressure ,acid,alkali,salt ... Heat628-837 j/kgq******Thermal Shock Stability, 500 °C then water cooling10 times******Max. Operating Temperature1050 °C1922 °FSpecific Density2,300 ...