EP 1204773 A1 20020515 - METHOD FOR THE PREPARATION OF FINE GRAIN ORES
Title (en)
METHOD FOR THE PREPARATION OF FINE GRAIN ORES
Title (de)
VERFAHREN ZUM AUFBEREITEN VON FEINKÖRNIGEM ERZ
Title (fr)
PROCEDE DE TRAITEMENT DE MINERAI A GRAINS FINS
Publication
Application
Priority
- AT 130099 A 19990727
- EP 0005565 W 20000616
Abstract (en)
[origin: WO0107670A1] The invention concerns a method for the preparation of fine-grain ore (2) in which the ore (2) is subjected to wind screening using a gas. Two fractions are formed (6, 8): a crude fraction (6) and a primary fine fraction (8), whereby the crude fraction (6) is ejected (6) and the primary fine fraction (8) is carried along by the gas, then deposited out of the gas and at least the majority thereof this is processed together with the crude fraction (6). The primary fine fraction is subjected again to a wind screening (8) using a gas which results in the deposition of a secondary fine fraction (18) and is processed together with the crude fraction (6). An ultrafine fraction (19) is carried along with the gas and then deposited out of the gas. In the subsequent processing steps which the fine grain ore (2) is subjected to, caking and sticking which can be caused by the ultra-fine fraction (19), can be avoided.
IPC 1-7
IPC 8 full level
B07B 9/00 (2006.01); B01D 45/08 (2006.01); B01D 45/12 (2006.01); B03C 3/28 (2006.01); B07B 4/08 (2006.01); B07B 7/08 (2006.01); B07B 9/02 (2006.01); C21B 13/00 (2006.01); C22B 1/00 (2006.01); C22B 1/24 (2006.01); C22B 7/00 (2006.01)
CPC (source: EP KR)
C21B 13/0033 (2013.01 - EP); C22B 1/00 (2013.01 - EP KR); C22B 1/2406 (2013.01 - EP); C22B 7/005 (2013.01 - EP); Y02P 10/20 (2015.11 - EP)
Citation (search report)
See references of WO 0107670A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0107670 A1 20010201; AT 407346 B 20010226; AT A130099 A 20000715; AU 5682600 A 20010213; CA 2378956 A1 20010201; EP 1204773 A1 20020515; JP 2003505240 A 20030212; KR 20020016918 A 20020306; MX PA02000629 A 20020830
DOCDB simple family (application)
EP 0005565 W 20000616; AT 130099 A 19990727; AU 5682600 A 20000616; CA 2378956 A 20000616; EP 00942084 A 20000616; JP 2001512935 A 20000616; KR 20027001091 A 20020125; MX PA02000629 A 20000616