EP 0170566 B1 19871125 - METHOD OF HEATING THE BLAST GAS OF A BLAST FURNACE WITH A PLASMA GENERATOR
Title (en)
METHOD OF HEATING THE BLAST GAS OF A BLAST FURNACE WITH A PLASMA GENERATOR
Publication
Application
Priority
FR 8410467 A 19840702
Abstract (en)
[origin: US4670048A] Method for heating the reducing gas of a blast furnace by means of a plasma generator. The reducing gas flows through a pipe into which issues the nozzle of the plasma generator. The pipe leads towards a tuyere of injection into the blast furnace, and the axis of said nozzle converging towards that of the pipe. The method is characterized in that the acute angle A between the axis of the nozzle and the axis of the pipe is at the most equal to 50 DEG , in that the distance 1 separating the point of intersection of the axis of the pipe with the axis of the nozzle from the center of the outlet orifice of the nozzle is at the most equal to D/2sinA, D being the inner diameter of the reducing gas inlet pipe, and in that the ratio D/d, in which d is the inner diameter of the outlet orifice of the nozzle is at least equal to 1.5. The object of the method is to eliminate wear of the reducing gas pipe by means of the jet of plasma.
IPC 1-7
IPC 8 full level
C21B 5/00 (2006.01); C21B 7/16 (2006.01); C22B 5/12 (2006.01); C22B 9/05 (2006.01); H05H 1/24 (2006.01); H05H 1/32 (2006.01)
CPC (source: EP US)
C21B 5/002 (2013.01 - EP US); C22B 5/12 (2013.01 - EP US); C22B 9/05 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI NL SE
DOCDB simple family (publication)
EP 0170566 A1 19860205; EP 0170566 B1 19871125; AT E31079 T1 19871215; AU 4384185 A 19860109; AU 566991 B2 19871105; BR 8503232 A 19860325; CA 1232133 A 19880202; DE 3561069 D1 19880107; FR 2566802 A1 19860103; FR 2566802 B1 19861205; JP S6119710 A 19860128; JP S648043 B2 19890213; US 4670048 A 19870602; ZA 854623 B 19860226
DOCDB simple family (application)
EP 85401313 A 19850628; AT 85401313 T 19850628; AU 4384185 A 19850619; BR 8503232 A 19850627; CA 486078 A 19850628; DE 3561069 T 19850628; FR 8410467 A 19840702; JP 14566285 A 19850701; US 74782585 A 19850624; ZA 854623 A 19850619