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US 3,979,215 AGranted
Refractory articles and methods of producing same
AssigneeZirconal Processes Limited
InventorsHarold Garton Emblem, Leslie Edward Shiel
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Abstract
A gel is prepared through the intermediary of an acid hydrolysate. The hydrolysate is produced by the hydrolysis of an organic silicate with the metal salt whose oxide it is desired to gell.
Claims21
A process for producing a shaped refractory article comprising:
- a. forming a gelable binding solution by hydrolyzing together under acidic conditions (1) an organic silicate and (2) a salt of a metal selected from the group consisting of calcium, magnesium, zinc, aluminum, zirconium and chromium, said hydrolyzing being carried out in an aqueous solvent for the silicate and the salt;
- b. mixing with the binding solution so formed a refractory powder and an alkaline gelation accelerator to form a slurry;
- c. forming a self-supporting body by molding the slurry into a desired shape and allowing the binding solution to gel;
- and
- d. firing the resulting body.
2 more elements
Dependencies are inferred from the claim text.