Sand reclamation

Details Sand reclamation Sand reclamation

1981-05-29

1983-11-22

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 3835, 241DIG10, C04B 1904

Patent

active

044166940

ABSTRACT:
A foundry sand composition which comprises particulate sand, aqueous sodium silicate as binder and an alkylene carbonate as hardener and which after use for moulds and/or cores in metal casting can be reclaimed for reuse by an attrition process contains before use no more than 11% by weight of alkylene carbonate based on the weight of aqueous sodium silicate and during the reclamation process has a residual moisture content of less than 0.8% by weight as determined by loss on ignition on 550.degree. C.

REFERENCES:
patent: 3137046 (1964-06-01), Barlow et al.
patent: 3542299 (1970-11-01), Sholl
patent: 4205796 (1980-06-01), Evans
patent: 4213785 (1980-07-01), Blanc et al.
patent: 4233076 (1980-11-01), Blanc et al.

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