EP 0648539 B1 19990707 - Closed circuit grinding plant
Title (en)
Closed circuit grinding plant
Title (de)
Umlaufmahlanlage
Title (fr)
Installation de broyage en circuit fermé
Publication
Application
Priority
DE 4334904 A 19931013
Abstract (en)
[origin: EP0648539A2] In order to create a closed-circuit grinding plant (circulation grinding plant), characterised by a low specific energy requirement, with the use of a material-bed high-pressure comminuting roller-press system which is capable of being very variable with regard to the product quality, for example in order to be able to produce simultaneously at least two different fine finished products of the same material, such as cement, without high material-circulation rates and the use of tube mills or other fine comminuting mills being necessary, it is proposed according to the invention to connect in series at least two grinding circuits, each containing a high-pressure roller press and a sifter, in such a way that the fine-material/medium-material discharge line (19) leads from the sifter (11) of the first grinding circuit if need be together with the sifting air to the sifter (13) of the second grinding circuit, from which its grit (23) [medium material] leads to the second high-pressure roller press (12) and its fine material is discharged as fine finished product (A), in which arrangement a less fine finished product (B) can be delivered from the first grinding circuit, and both finished products (A and B) can be mixed to form an end product of desired product quality. <IMAGE>
IPC 1-7
IPC 8 full level
B02C 21/00 (2006.01); B02C 23/12 (2006.01)
CPC (source: EP)
B02C 21/00 (2013.01)
Designated contracting state (EPC)
DE DK FR
DOCDB simple family (publication)
EP 0648539 A2 19950419; EP 0648539 A3 19951011; EP 0648539 B1 19990707; DE 4334904 A1 19950420; DE 59408467 D1 19990812; DK 0648539 T3 20000117
DOCDB simple family (application)
EP 94114845 A 19940921; DE 4334904 A 19931013; DE 59408467 T 19940921; DK 94114845 T 19940921