EP 0465778 B1 19971001 - Process for reclaiming used foundry sand
Title (en)
Process for reclaiming used foundry sand
Title (de)
Verfahren zum Regenerieren von Giesserei-Altsanden
Title (fr)
Procédé de récupération de sable décoché
Publication
Application
Priority
- DE 4020576 A 19900628
- DE 4100520 A 19910110
Abstract (en)
[origin: US5233765A] Although an elevated process temperature is used for reprocessing used sands having high clay-like portions, the upper limit thereof is fixed such that chamottization of the sand and combustion of organic binder components do not occur. The air-gas mixture is circulated in a drier and a mechanical reprocessing step arranged downstream thereof and heated to process temperature by utilizing thermal energy obtained by branching off and burning part of the air-gas mixture from the circulation.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
B22C 5/18 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0465778 A2 19920115; EP 0465778 A3 19930414; EP 0465778 B1 19971001; AT E158731 T1 19971015; JP H0596340 A 19930420; US 5233765 A 19930810
DOCDB simple family (application)
EP 91106513 A 19910423; AT 91106513 T 19910423; JP 14725191 A 19910619; US 69871991 A 19910510