06071487 is referenced by 8 patents and cites 10 patents.

In the method, a suspension of silica particles in water is provided, the suspension is gelled, the resulting gel is dried under microwaves, the dried gel is fractioned into silica granules having a diameter lying in the range 10 .mu.m to 1000 .mu.m, having an apparent density of about 0.5 g/cm.sup.3 to 0.6 g/cm.sup.3, and a porosity of less than 20%, and the granules are screened in the range 100 .mu.m to 500 .mu.m. The suspension in water of silica particles is made by mixing silica soots having a size of less than 0.1 .mu.m and silica grains having a size greater than 1 .mu.m. Its maximum concentration in total weight is greater than that of a suspension of synthetic soots on their own, thereby making it possible to increase the production capacity of the method. Advantageously, the out-of-range granules rejected by the screening are recycled as silica grains for the aqueous suspension, thereby making it possible to increase the accumulated production efficiency of the method.

Title
Method of manufacturing a silica powder
Application Number
9/116337
Publication Number
6071487
Application Date
July 16, 1998
Publication Date
June 6, 2000
Inventor
Christelle Lavallade
Courdimanche
FR
Jean Francois Chariot
Marly le Roi
FR
Jacques Goudeau
Hickory
NC, US
Jean Florent Campion
Bois Colombes
FR
Agent
Sughrue Mion Zinn Macpeak & Seas PLLC
Assignee
Alcatel
FR
IPC
C01B 33/12
C01B 33/157
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