EP 0317935 A2 19890531 - Method and apparatus for fine grinding.
Title (en)
Method and apparatus for fine grinding.
Title (de)
Verfahren und Vorrichtung zur Feinzerkleinerung.
Title (fr)
Procédé et appareil pour le broyage fin.
Publication
Application
Priority
US 12563887 A 19871125
Abstract (en)
A method and apparatus for fine grinding materials normally difficult to grind at ambient temperature, e.g. plastic and elastomeric materials and foodstuffs in a fluid classification type impact mill utilizing liquid cryogen to pre-cool the material to be ground, to cool the material and the mill during grinding and to recycle vaporized cryogen from the mill back into the mill as the medium for conveying material to be ground into the mill.
IPC 1-7
IPC 8 full level
B02C 13/14 (2006.01); B02C 19/18 (2006.01); B02C 23/30 (2006.01)
CPC (source: EP KR)
B02C 13/14 (2013.01 - EP); B02C 19/186 (2013.01 - EP); B02C 23/18 (2013.01 - KR)
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0317935 A2 19890531; EP 0317935 A3 19900103; EP 0317935 B1 19920429; BR 8806087 A 19890808; CA 1328862 C 19940426; DE 3870587 D1 19920604; JP H01168361 A 19890703; KR 890007796 A 19890705; KR 910006231 B1 19910817; PT 89070 A 19890914; ZA 888809 B 19900725
DOCDB simple family (application)
EP 88119353 A 19881121; BR 8806087 A 19881121; CA 583552 A 19881118; DE 3870587 T 19881121; JP 29590688 A 19881122; KR 880015558 A 19881125; PT 8907088 A 19881124; ZA 888809 A 19881124