EP 1114193 A1 20010711 - METHOD FOR HEAT-TREATING RECYCLINGS CONTAINING OIL AND IRON OXIDE
Title (en)
METHOD FOR HEAT-TREATING RECYCLINGS CONTAINING OIL AND IRON OXIDE
Title (de)
VERFAHREN ZUR THERMISCHEN BEHANDLUNG ÖL- UND EISENOXIDHALTIGER RESTSTOFFE
Title (fr)
PROCEDE DE TRAITEMENT THERMIQUE DE RESIDUS CONTENANT DE L'HUILE ET DES OXYDES DE FER
Publication
Application
Priority
- EP 9906382 W 19990830
- LU 90282 A 19980902
Abstract (en)
[origin: WO0014286A1] The invention relates to a method for heat-treating recyclings containing oil and iron oxide in a multiple hearth furnace. Said oven has several superposed tiers. The recyclings containing oil and iron oxide are mixed with a solid reducing agent and continuously fed into the multiple hearth furnace, placed on the top tier and then gradually transferred to the lower tiers. The recyclings are dried on the uppermost tier. The oil is then evaporated and pyrolysed and the reducing agents react with the iron oxide to form directly reduced iron. The directly reduced iron is then discharged together with residues of the reducing agents in the area of the lowest tier of the multiple hearth furnace.
IPC 1-7
IPC 8 full level
C02F 11/06 (2006.01); C21B 11/00 (2006.01); C21B 13/06 (2006.01); C21B 13/10 (2006.01); C22B 1/248 (2006.01); C22B 7/00 (2006.01); C22B 7/02 (2006.01); F23G 5/027 (2006.01); F23G 5/16 (2006.01); F23G 7/04 (2006.01); F27D 7/02 (2006.01); F27D 17/00 (2006.01)
CPC (source: EP KR US)
C21B 3/04 (2013.01 - KR); C21B 13/10 (2013.01 - EP US); C22B 7/001 (2013.01 - EP US); Y02P 10/122 (2015.11 - EP US); Y02P 10/134 (2015.11 - EP US); Y02P 10/20 (2015.11 - EP US); Y02W 10/40 (2015.05 - EP US); Y10S 75/962 (2013.01 - US)
Citation (search report)
See references of WO 0014286A1
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 0014286 A1 20000316; AU 6079599 A 20000327; AU 747819 B2 20020523; BR 9913608 A 20010605; CA 2339014 A1 20000316; CN 1312863 A 20010912; CZ 2001755 A3 20020213; EP 1114193 A1 20010711; JP 2004538122 A 20041224; KR 20010073025 A 20010731; LU 90282 B1 20000303; PL 346336 A1 20020211; SK 2792001 A3 20011008; TR 200101428 T2 20010921; TW 452598 B 20010901; US 6391088 B1 20020521; ZA 200100948 B 20020502
DOCDB simple family (application)
EP 9906382 W 19990830; AU 6079599 A 19990830; BR 9913608 A 19990830; CA 2339014 A 19990830; CN 99809734 A 19990830; CZ 2001755 A 19990830; EP 99947271 A 19990830; JP 2000569026 A 19990830; KR 20017002502 A 20010227; LU 90282 A 19980902; PL 34633699 A 19990830; SK 2792001 A 19990830; TR 200101428 T 19990830; TW 88100505 A 19990114; US 78627201 A 20010302; ZA 200100948 A 20010202