High strength porcelains for use in insulators and...

Details High strength porcelains for use in insulators and... High strength porcelains for use in insulators and...

C - Chemistry, Metallurgy

04

B

261/13

C04B 33/24 (2006.01) C04B 33/26 (2006.01) C04B 35/18 (2006.01) H01B 3/08 (2006.01) H01B 3/12 (2006.01)

Patent

CA 1288782

HIGH STRENGTH PORCELAINS FOR USE IN INSULATORS AND PRODUCTION THEREOF ABSTRACT OF THE DISCLOSURE High strength alumina porcelains for use in insulators are disclosed herein, in which the maximum particle diameter of quartz grains remaining in the porcelains is not more than 40 µm. A process for producing such high strength alumina porcelains for use in insulators comprises the steps of mixing the alumina of a controlled grain size which is decomposed in a single crystalline state and in which the 50% average particle diameter is in a range from 4 to 14 µm, raw materials ground finely which are selected from the group consisting essentially of feldspar, silica sand, and china stone, and clay together, forming the thus obtained mixture, and drying and firing the formed body.

560568

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