EP 0921860 B1 20010919 - PROCESS FOR CONTROLLING A SAND AND GRAVEL SORTING AND SIZING DEVICE
Title (en)
PROCESS FOR CONTROLLING A SAND AND GRAVEL SORTING AND SIZING DEVICE
Title (de)
VERFAHREN ZUR STEUERUNG EINER SORTIER- UND KLASSIERVORRICHTUNG FÜR SAND UND KIES
Title (fr)
PROCEDE PERMETTANT DE COMMANDER UN DISPOSITIF DE TRIAGE ET DE CALIBRAGE POUR LE SABLE ET LE GRAVIER
Publication
Application
Priority
- DE 9701568 W 19970719
- DE 19630085 A 19960726
Abstract (en)
[origin: DE19630085A1] A process is disclosed for controlling the composition of a product from a device for sizing and sorting mineral raw materials, in particular sand and gravel, which must keep a predetermined finest sand concentration in the sand product quantity. For that purpose, an additional sizing separation of the sand product quantity into a sand fraction (mPr) and into a finest sand fraction (mFSS) to be discharged through the overflow is carried out in the chamber above the level (hFS) of the fluidised bed contained in the chamber. In order to set a predetermined finest sand concentration (C<Prsoll) in the sand product quantity, the level (hFS) of the fluidised bed is regulated in such a way that the proportion of finest sand (m<A) in the loaded amount of raw material can be divided by the fluidised bed into a finest sand proportion permissible as a function of the predetermined concentration (C<Prsoll) to be discharged into the sand product quantity (mPr) and into a finest sand proportion (mFSS) to be discharged through the overflow.
IPC 1-7
IPC 8 full level
B03B 5/52 (2006.01); B03B 5/62 (2006.01); B03B 5/66 (2006.01); B03B 13/00 (2006.01)
IPC 8 main group level
B03B (2006.01)
CPC (source: EP US)
B03B 5/62 (2013.01 - EP US); B03B 5/623 (2013.01 - EP US); B03B 13/00 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
DE 19630085 A1 19980129; DE 19630085 C2 20010308; AU 3846897 A 19980220; DE 59704686 D1 20011025; EP 0921860 A1 19990616; EP 0921860 B1 20010919; PL 185287 B1 20030430; PL 331485 A1 19990719; US 6142311 A 20001107; WO 9804353 A1 19980205; ZA 976636 B 19980901
DOCDB simple family (application)
DE 19630085 A 19960726; AU 3846897 A 19970719; DE 59704686 T 19970719; DE 9701568 W 19970719; EP 97935480 A 19970719; PL 33148597 A 19970719; US 23059699 A 19990330; ZA 976636 A 19970725