C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/128
C04B 33/14 (2006.01) C04B 33/32 (2006.01) C04B 35/26 (2006.01) F27B 5/04 (2006.01)
Patent
CA 1117746
ABSTRACT OF DISCLOSURE The present invention relates to a process for the production of coloured, fired, shaped clay products which comprises firing shaped, dried clay objects in a kiln, effecting carbon deposition on and into the resulting fired clay objects by heat treating the said fired objects in a carburizing atmosphere to produce a coloured, fired, shaped clay product and thereafter cooling said coloured product in an atmosphere of nitrogen.
293538
Kirby Eades Gale Baker
Ravenhead Brick Company Limited
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