METHOD FOR MANUFACTURING HIGH PURITY SILICA GLASS WITH ADDITIVE DOPED

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing high purity silica glass low in shrinkage percentage when dried and low in the possibility to generate cracks owing to pores while doping an additive uniformly. SOLUTION: This method for manufacturing silica glass with the additive doped comprises a powder preparation step 100 to prepare silica powder with the additive doped by dispersing 110 silica particles in a dispersion medium, adding 120 an additive-containing gas to the silica-dispersed medium, drying 130, heating 140 and pulverizing 150 it and a silica glass manufacturing step 200 to manufacture silica glass with the additive doped by using as a starting material the silica powder prepared at the powder preparation step.