C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 35/10 (2006.01)
Patent
CA 2136158
Amorphous boric oxide - containing product having about 85 to 92% by weight B2O3 is produced by heating boric acid at an elevated temperature of up to about 275°C to dehydrate the boric acid and form a molten glass which is cooled to a solid glassy product. This solid glass can be comminuted to produce a particulate product. Preferably the boric acid is heated at 220° to 275°C, with about 250° to 270°C being most preferred. The process is readily adapted to a continuous process in which the boric acid is placed on a moving continuous steel belt and conveyed through a heating zone. The molten glassy product is cooled to form a solid glassy product which is removed from the belt and comminuted to a desirable particle size range.
Fisher Richard P.
Jacobs Paul F.
Mu Jacob J.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
U.s. Borax Inc.
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