EP 0362525 A3 19910116 - COLD-GRINDING METHOD AND APPARATUS
Title (en)
COLD-GRINDING METHOD AND APPARATUS
Publication
Application
Priority
DE 3833830 A 19881005
Abstract (en)
[origin: JPH02227148A] PURPOSE: To increase the fine milling and treatment quantity of products by cooling the coarse particles flowing back from a classifying device within a fluidized-bed counter-jet mill by a cryogenic cooling medium. CONSTITUTION: The fluidized-bed counter-jet mill is provided with a grinding chamber 2 to be loaded by a jet gaseous flow, a device 7 for supplying the grinding stock, the classifying device 5 for classifying the coarse particles 11 and fine particulates 10 and a bottom 3 arranged below the grinding chamber 2 for the fed grinding stock and the coarse particles 11 flowing back from the classifying device 5. The coarse particles 11 flowing back from the classifying device 5 are cooled by the cryogenic cooling medium supplied from a supplying device 13 within the fluidized-bed counter-jet mill. Consequently, only the slight energy and cooling medium are necessitated and the fine milling and treatment quantity of the products may be increased.
IPC 1-7
IPC 8 full level
B02C 19/06 (2006.01); B02C 19/18 (2006.01); B02C 23/12 (2006.01)
CPC (source: EP US)
B02C 19/06 (2013.01 - EP US); Y10S 241/37 (2013.01 - EP US)
Citation (search report)
- [Y] EP 0139279 A2 19850502 - ALPINE AG [DE]
- [A] US 3897010 A 19750729 - WEISHAUPT JOSEF, et al
- [A] EP 0135244 A2 19850327 - HOWDEN JAMES & CO LTD [GB]
- [A] WO 8605717 A1 19861009 - MAGYAR ALUMINIUM [HU]
- [Y] SOVIET INVENTIONS ILLUSTRATED, Woche 8431, 12. September 1984, Sektion J/M, Klasse J02/M22, Nr. 84-194530/31, Derwent Publications Ltd, London, GB; & SU-A-1 060 199 (UKR SPEC. STEELFERR) 15-12-1983
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0362525 A2 19900411; EP 0362525 A3 19910116; EP 0362525 B1 19940323; AT E103208 T1 19940415; DE 3833830 A1 19900412; DE 3833830 C2 19911107; DE 58907281 D1 19940428; ES 2052845 T3 19940716; JP H02227148 A 19900910; US 4962893 A 19901016; ZA 897535 B 19900627
DOCDB simple family (application)
EP 89115154 A 19890817; AT 89115154 T 19890817; DE 3833830 A 19881005; DE 58907281 T 19890817; ES 89115154 T 19890817; JP 25897289 A 19891005; US 41588489 A 19891002; ZA 897535 A 19891004