GLAZED PRODUCT, PRODUCTION METHOD THEREOF AND SILVER DETECTING METHOD AND SILVER RECOVERY METHOD

摘要

PROBLEM TO BE SOLVED: To provide a glazed product wherein silver is condensed near a blazed layer outermost surface and a production method thereof, a method of easily detecting the silver in the glazed layer and a method of easily recovering the silver from the glazed layer. SOLUTION: A silica film precursor capable of forming water glass or silica coating film is stuck on the surface of the glazed layer of a glazed product base material having the glazed layer containing silver, formed on the surface of the base material, and fired at 300-800°C to form an alkali silicate containing layer. The alkali silicate containing layer having high silver concentration is obtained by the movement of silver in the glazed layer and is colored yellow. COPYRIGHT: (C)2011,JPO&INPIT