EP 0654308 B1 19970924 - Method and device for grain size analysis in the fine and very fine ranges
Title (en)
Method and device for grain size analysis in the fine and very fine ranges
Title (de)
Verfahren und Vorrichtung zur Korngrössenanalyse im Fein- und Feinstkornbereich
Title (fr)
Procédé et dispositif pour l'analyse granulométrique dans les domaines fins et très fins
Publication
Application
Priority
DE 4339834 A 19931123
Abstract (en)
[origin: EP0654308A1] In order to provide a method for grain-size analysis in the fine and very fine range by means of a gas-jet screen, the screening material being delivered onto the screen fabric, a gas jet being blown through the screen fabric and the screening material by means of a slit nozzle (2) rotating underneath the screen fabric, fine fractions being entrained by the gas stream and being transported by the latter in the opposite direction through the screen fabric to a discharge orifice located underneath the screen fabric, the said method allowing exact and accurately reproducible measured values, it is proposed that the gas stream be recorded quantitatively and be kept constant over the course of the screening operation. <IMAGE>
IPC 1-7
IPC 8 full level
G01N 15/02 (2006.01); B07B 1/46 (2006.01); B07B 1/55 (2006.01); B07B 4/08 (2006.01); B07B 11/04 (2006.01); B07B 13/18 (2006.01)
CPC (source: EP)
B07B 1/46 (2013.01); B07B 1/55 (2013.01); B07B 4/08 (2013.01); B07B 11/04 (2013.01); B07B 13/18 (2013.01)
Designated contracting state (EPC)
AT BE DE FR GB NL
DOCDB simple family (publication)
EP 0654308 A1 19950524; EP 0654308 B1 19970924; AT E158519 T1 19971015; DE 4339834 A1 19950524; DE 59404158 D1 19971030; JP 2787656 B2 19980820; JP H07198581 A 19950801
DOCDB simple family (application)
EP 94113026 A 19940820; AT 94113026 T 19940820; DE 4339834 A 19931123; DE 59404158 T 19940820; JP 31898294 A 19941117