Gellable binders

Details Gellable binders Gellable binders

C - Chemistry, Metallurgy

04

B

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C04B 9/00 (2006.01) C04B 35/04 (2006.01) C04B 35/48 (2006.01) C04B 35/63 (2006.01) C04B 35/632 (2006.01) C04B 35/634 (2006.01)

Patent

CA 1044705

TITLE "IMPROVED GELLABLE BINDERS" A B S T R A C T The invention concerns the binding of refractory powders into self-supporting "green" shapes which are fired to provide refractory objects. In accordance with the invention the binders are based on zirconium salts and include a dispersion of calcined magnesia in a mixture of water and a polyhydric alcohol. The magnesia reacts with the zirconium salt to form zirconium oxide/hydroxide which gells hard. In order to control the speed of gelling a separate gell time delaying agent is also optionally included. -1-

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