Patent ID: 8592021

Claim:
A disk roll which comprises a shaft and, fitted thereon by insertion, ring-shaped disks cut 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 800-900° 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, whereby a peripheral surface of the disks serves as a conveying surface and 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 at 800° C., 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 .