公开(公告)号：US07140201B2

公开(公告)日：2006-11-28

申请号：US10169191

申请日：2000-12-28

申请人： Kunio Sugiyama ,  Shuichi Tada ,  Jinichi Omi ,  Tadahiro Nakada ,  Hiroshi Morita ,  Masaki Kusuhara ,  Hiroyuki Watanabe ,  Hirofumi Uehara ,  Keiko Sanpei

发明人： Kunio Sugiyama ,  Shuichi Tada ,  Jinichi Omi ,  Tadahiro Nakada ,  Hiroshi Morita ,  Masaki Kusuhara ,  Hiroyuki Watanabe ,  Hirofumi Uehara ,  Keiko Sanpei

IPC分类号： C03B8/02 ,  C01B33/113

CPC分类号： C03B19/1065 ,  C01B33/16 ,  C03B2201/03 ,  C03B2201/04 ,  C03C1/006

摘要： A hydrous silica gel is dehydrated by freezing, thawing, and removing water separated by thawing, thereby yielding silica particles. In addition, the silica particles thus formed is washed and fired, thereby producing a synthetic quartz glass power.A water glass is dealkalized, an oxidizing agent and an acid are added, the mixture thus formed is passed through a hydrogen type cation exchange resin, the aqueous silica solution thus formed is then gelled, and the gelled material is then washed and fired, thereby producing a synthetic quartz powder.Silica is sequentially held for a predetermined time at each temperature range of 150 to 400° C., 500 to 700° C., and 1,100 to 1,300° C., thereby producing a quartz glass.

摘要翻译： 通过冷冻，解冻和除去通过解冻分离的水来脱水水合硅胶，从而产生二氧化硅颗粒。 此外，将由此形成的二氧化硅颗粒进行洗涤和烧制，从而产生合成石英玻璃粉末。 将水玻璃脱碱，加入氧化剂和酸，使形成的混合物通过氢型阳离子交换树脂，然后将由此形成的二氧化硅水溶液凝胶化，然后将凝胶材料洗涤并烧制，由此 生产合成石英粉。 在150〜400℃，500〜700℃，1100〜1300℃的各温度范围内依次保持二氧化硅预定时间，生成石英玻璃。