EP 3655164 A1 20200527 - TWO-STAGE GRINDING CIRCUIT AND METHOD FOR PRODUCING A GROUND PRODUCT BY MEANS OF A TWO-STAGE GRINDING PROCESS
Title (en)
TWO-STAGE GRINDING CIRCUIT AND METHOD FOR PRODUCING A GROUND PRODUCT BY MEANS OF A TWO-STAGE GRINDING PROCESS
Title (de)
ZWEISTUFIGER MAHLKREISLAUF UND VERFAHREN ZUR HERSTELLUNG EINES GEMAHLENEN PRODUKTS MITTELS EINER ZWEISTUFIGEN MAHLUNG
Title (fr)
CIRCUIT DE BROYAGE À DEUX NIVEAUX ET PROCÉDÉ POUR LA FABRICATION D'UN PRODUIT BROYÉ AU MOYEN D'UN BROYAGE À DEUX NIVEAUX
Publication
Application
Priority
- DE 102017115994 A 20170717
- EP 2018068654 W 20180710
Abstract (en)
[origin: WO2019016031A1] The invention relates to a two-stage grinding circuit consisting mainly of a first grinding stage (1), which comprises a vertical roller mill (10) having a grinding disk (11), at least one grinding roller (12) interacting with the grinding disk (11) and a first dynamic separator (13), the first dynamic separator (13) comprising a fine material outlet (15) for discharging fine material (5) and a grit return (16) for returning grits (8) to the grinding disk (11), and a second grinding stage (2), which has a second mill (20), which is formed by a stirred ball mill or a ball mill, the second mill (20) comprising an inlet (21) and an outlet (22). Furthermore, a grit extraction device (18) is provided for extracting part of the grits (8), the grit extraction device being connected to the grit return (16) and being connected to the inlet (21) of the second mill (20).
IPC 8 full level
B02C 15/00 (2006.01); B02C 21/00 (2006.01); B02C 23/12 (2006.01)
CPC (source: EP)
B02C 21/00 (2013.01); B02C 21/002 (2013.01); B02C 23/12 (2013.01); B02C 2015/002 (2013.01)
Citation (search report)
See references of WO 2019016031A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102017115994 A1 20190117; CN 110869131 A 20200306; EP 3655164 A1 20200527; WO 2019016031 A1 20190124
DOCDB simple family (application)
DE 102017115994 A 20170717; CN 201880046594 A 20180710; EP 18740781 A 20180710; EP 2018068654 W 20180710