Patent ID: 6033730
Filing Date: 2000-03-07
Classification: A23L,B01D,B01J,C02F

Abstract:
A process for manufacturing a weathered reef-building coral material, comprising the steps of;immersing weathered reef-building coral in an aqueous 0.1N to 6N alkali solution under reduced pressure to carry out alkali washing to make the aqueous alkali solution penetrate into the weathered reef-building coral throughout its fine structure inside the porous tissue; andwashing it with water until a washing from the inside of the porous tissue is neutralized, wherein said alkali washing is carried out by forcibly passing the aqueous alkali solution through the weathered reef-building coral immersed in the aqueous alkali solution or is carried out by agitating the weathered reef-building coral in said aqueous alkali solution and wherein the aqueous alkali solution is heated.