| 摘要 |
<P>PROBLEM TO BE SOLVED: To inexpensively manufacture a porous ceramic with light weight and high porosity. <P>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 CaCO<SB>3</SB>richly and the kira contains SiO<SB>2</SB>richly. When the both components are mixed and sintered, CaOSiO<SB>2</SB>(wallastonite) is formed by the sintering of CaCO<SB>3</SB>and SiO<SB>2</SB>and CO<SB>2</SB>is simultaneously discharged. Pores are formed by CO<SB>2</SB>(porous processing) and weight reduction is simultaneously performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
