METHOD FOR MANUFACTURING HIGH PURITY SYNTHETIC QUARTZ POWDER

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing high purity synthetic quartz powder by which high purity synthetic quartz powder extremely low in titanium content can be obtained even when inexpensive water glass is used as a starting material. SOLUTION: This method for manufacturing high purity synthetic quartz powder comprises the first step to subject the water glass to alkali removing treatment to obtain a silica aqueous solution, the second step to add an oxidizing agent and an acid to the silica aqueous solution obtained at the first step, which is then made to pass through a hydrogen type cation exchange resin, the third step to gelate the silica aqueous solution obtained at the second step to obtain silica particles, the fourth step to wash the gelated silica and the fifth step to sinter the washed silica.