Title:
METHOD FOR PRODUCING A MOULDING SAND THAT IS IN PARTICULAR RECIRCULATED, FOR FOUNDRY PURPOSES
Document Type and Number:
WIPO Patent Application WO2003066253
Kind Code:
B1
Abstract:
The invention relates to a method for producing a moulding sand that is in particular recirculated, for foundry purposes. According to the invention, 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 comprises cavities with a specific surface area of more than 10 m<2>/g, in particular more than 50 m<2>/g and preferably more than 100 m<2>/g, for improving the characteristics of the moulding sand and/or for reducing the emission of harmful and/or odorous substances.
Inventors:
GREFHORST CORNELIS (NL)
KOCH KARL (DE)
KOCH KARL (DE)
Application Number:
PCT/EP2003/001226
Publication Date:
May 27, 2004
Filing Date:
February 07, 2003
Export Citation:
Assignee:
IKO MINERALS GMBH (DE)
GREFHORST CORNELIS (NL)
KOCH KARL (DE)
GREFHORST CORNELIS (NL)
KOCH KARL (DE)
International Classes:
B22C1/00; B22C1/02; B22C1/18; (IPC1-7): B22C1/02; B22C1/18
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