Process for producing synthetic quartz glass powder

摘要

PCT No. PCT/JP95/02666 Sec. 371 Date Nov. 4, 1997 Sec. 102(e) Date Nov. 4, 1997 PCT Filed Dec. 25, 1995 PCT Pub. No. WO96/20128 PCT Pub. Date Jul. 4, 1996A process for producing synthetic quartz powder which comprises calcining silica gel powder to produce a synthetic quartz glass powder, wherein dry air is used in the calcining process at least in the process of cooling from 800 DEG C. to 200 DEG C. This process enables efficient production of synthetic quartz glass powder on an industrial scale.