METHOD FOR MANUFACTURING POROUS CERAMIC, POROUS CERAMIC AND TILE

摘要

PROBLEM TO BE SOLVED: To inexpensively manufacture a porous ceramic with light weight and high porosity.;SOLUTION: A composition whose essential 2 components are limestone sludge and kira (silt), where the rate of one component in the essential 2 components is not lower than 42% and where the total blending rate of the essential 2 components is 90% or more is sintered. The limestone sludge contains CaCO₃ richly and the kira contains SiO₂ richly. When the both components are mixed and sintered, CaOSiO₂ (wallastonite) is formed by the sintering of CaCO₃ and SiO₂ and CO₂ is simultaneously discharged. Pores are formed by CO₂ (porous processing) and weight reduction is simultaneously performed.;COPYRIGHT: (C)2006,JPO&NCIPI