EP 0767019 B1 19981111 - Process and apparatus for regenerating foundry sand
Title (en)
Process and apparatus for regenerating foundry sand
Title (de)
Verfahren und Vorrichtung zur Regenerierung von Giesserei-Altsand
Title (fr)
Procédé et dispositif pour la régénération de sable de fonderie
Publication
Application
Priority
CH 279895 A 19951004
Abstract (en)
[origin: EP0767019A1] Process for regenerating used foundry sand with a proportion of bentonite-bound sand, whereby the sand grains are repeatedly accelerated and braked in a treatment chamber and scrubbed by combined impact and shear with subsequent grain on grain scouring, thereby being freed of adhering usable and spent binder and additive coatings (scoured off fine particles being separated from the sand). The sand to be treated is divided into two falling streams, the first stream being accelerated and impelled into the second stream. Process equipment is also claimed.
IPC 1-7
IPC 8 full level
B22C 5/10 (2006.01)
CPC (source: EP US)
B22C 5/10 (2013.01 - EP US); Y10S 241/10 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0767019 A1 19970409; EP 0767019 B1 19981111; BR 9603996 A 19980609; CH 690322 A5 20000731; DE 59600805 D1 19981217; HU 9602729 D0 19961128; HU P9602729 A2 19981228; HU P9602729 A3 20020828; US 5836369 A 19981117
DOCDB simple family (application)
EP 96114427 A 19960910; BR 9603996 A 19961004; CH 279895 A 19951004; DE 59600805 T 19960910; HU P9602729 A 19961004; US 72512696 A 19961002