Patent ID: 8683691

Claim:
A process of preparing a disk roll comprising: forming ring-shaped disks out of a base material comprising 5-40% by mass based on a total amount of the base material of biosoluble inorganic fibers having a crystallization temperature of 800-900Â° C. and a solubility in physiological saline of at least 1%, a filler, and a sinterable clay in an amount of 5 to 55% by mass, wherein the inorganic fiber contains 75 to 80% by mass of SiO 2 , 19 to 25% by mass of CaO+MgO and 1 to 3% by mass of Al 2 O 3 , when a disk roll is formed from the base material, the disk roll has a compression deformation of 0.05-0.3 mm when a load of 10 kgf/cm is imposed on a disk roll surface of 800Â° C., and inserting the ring-shaped disks on a shaft to form a disk roll.