EP 0135078 B2 19911009 - ROTARY DRUM FURNACE AND ITS USE
Title (en)
ROTARY DRUM FURNACE AND ITS USE
Publication
Application
Priority
DE 3328709 A 19830809
Abstract (en)
[origin: US4629500A] In a rotary tubular kiln for carrying out gas-solids reactions, comprising an indirectly heated, rotatable reaction tube with inner baffles which is provided with charging and removing devices for solid and gas inlet and outlet lines, the improvement which comprises forming the baffles as a central tube which is sealed on both sides and runs along the total length of the kiln, and a spiral which is tightly connected to the central tube and also to the outer rotatable tube. Lifting blades are uniformly distributed along the inner periphery of the rotatable tube. The kiln is suitable for carrying out oxidation, reduction, chlorination, roasting, decomposition, catalytic, annealing and/or cooling processes, e.g. the conversion of hematite to magnetite or goethite to iron.
IPC 1-7
IPC 8 full level
B01J 8/10 (2006.01); C01G 49/08 (2006.01); C21B 15/00 (2006.01); F26B 11/04 (2006.01); F27B 7/06 (2006.01); F27B 7/08 (2006.01); F27B 7/10 (2006.01); F27B 7/16 (2006.01)
CPC (source: EP KR US)
F26B 11/0477 (2013.01 - EP US); F27B 7/08 (2013.01 - EP US); F27B 7/16 (2013.01 - KR); F27B 7/161 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0135078 A2 19850327; EP 0135078 A3 19860319; EP 0135078 B1 19880601; EP 0135078 B2 19911009; DE 3328709 A1 19850228; DE 3471738 D1 19880707; JP H0526116 B2 19930415; JP S6053775 A 19850327; KR 850001994 A 19850410; KR 920001099 B1 19920201; US 4629500 A 19861216; US 4781580 A 19881101
DOCDB simple family (application)
EP 84108997 A 19840730; DE 3328709 A 19830809; DE 3471738 T 19840730; JP 16390484 A 19840806; KR 840004689 A 19840808; US 5119187 A 19870514; US 63746984 A 19840803