Method for producing a molding sand that is in particular...

Metal founding – Process – Shaping a forming surface

Reexamination Certificate

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C164S520000

Reexamination Certificate

active

10503780

ABSTRACT:
A method is for producing a moulding sand that is in particular recirculated, for foundry purposes. A mixture of a granular substance and aggregates, such as a binding agent and water, are added to a material that is not capable of swelling in water. The latter material has cavities with a specific surface area of more than 10 m2/g, in particular more than 50 m2/g and preferably more than 100 m2/g, for improving the characteristics of the moulding sand and/or for reducing the emission of harmful and/or odorous substances.

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patent: WO 98/17417 (1998-04-01), None

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