C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
49/77
C03B 19/10 (2006.01)
Patent
CA 1040859
TITLE: PROCESS FOR FORMING HOLLOW GLASS MICRO-SPHERES FROM ADMIXED HIGH AND LOW TEMPERATURE GLASS FORMERS Abstract of the Disclosure A process for forming hollow glass micro-spheres with walls of controllably variable thickness in a size range of 50 to 5,000 microns, embodying (1) preparation of a water slurry of finely particulated, high temperature and low temperature glass formers; (2) prilling the slurry in a vertical spray drying tower; (3) separating and supporting the individual prilled feed material; (4) heating the feed material to glassification of the high temperature glass former while maintaining appropriate geometry and shell thickness and (5) cooling the finished product. The high temperature glass former is preferably a naturally occurring soda feldspar. The process is particularly adapted to form thicker walled micro-spheres of larger size and high quality.
199158
Carson Richard W.
Matthews William R.
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