EP 0521201 B1 19970402 - Process for reclaiming used foundry sand
Title (en)
Process for reclaiming used foundry sand
Title (de)
Verfahren zum Regenerieren von Giesserei-Altsand
Title (fr)
Procédé pour la régéneration de sable de fonderie decoché
Publication
Application
Priority
EP 91250173 A 19910629
Abstract (en)
[origin: EP0521201A1] The invention relates to a process for reclaiming used foundry sand, whose original foundry sand contained, as forming material, inorganic binders such as, for example and especially, bentonite (= "inorganic spent sand") or/and organic binders such as, for example and especially, phenolic resins or/and furan resins (= "organic spent sand"), wherein the spent sand to be reprocessed is impregnated with water and then transferred in the moist state into a heated fluidised bed. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
B22C 5/08 (2013.01); B22C 5/185 (2013.01)
Designated contracting state (EPC)
BE DE ES FR GB IT LU NL
DOCDB simple family (publication)
EP 0521201 A1 19930107; EP 0521201 B1 19970402; DE 59108648 D1 19970507; ES 2100205 T3 19970616
DOCDB simple family (application)
EP 91250173 A 19910629; DE 59108648 T 19910629; ES 91250173 T 19910629