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U.S. Department of Energy
Office of Scientific and Technical Information

Silicate treatment of impure silica sands

Patent ·
OSTI ID:6141016
A process is provided for treating impure silica-containing sands to make them more suitable for foundry use. The sands are treated with aqueous alkali metal silicate solutions and the resulting mixture is heated before the sands are coated with a resin binder. Foundry cores and molds prepared with these treated sands show improved hot and cold tensile strengths.
Assignee:
Acme Resin Corporation
Patent Number(s):
US 4469517
OSTI ID:
6141016
Country of Publication:
United States
Language:
English