Title:
【発明の名称】冶金炉を加熱するための方法及び装置
Document Type and Number:
Japanese Patent JPH05500847
Kind Code:
A
Abstract:
Described is a process for heating a metallurgical furnace, in particular an arc furnace charged with scrap metal or a similar solid material. Oxygen and fuel are fed in through the furnace wall by at least one burner located above the melt, the fuel being supplied in a carrier-gas stream which completely surrounds the oxygen feed line. The process is particularly cost-effective owing to the fact that 4-15 kg/t of coal dust of particle size <200 $g(m)m in an inert-to-slightly reducing carrier gas is used as the fuel, being fed in at a speed of at least 45 m/s, at least while the charge is melting, and being burnt in a diffuse flame in stoichiometric to slightly greater than stoichiometric proportions in oxygen emerging from the burner at about the speed of sound and at a pressure of at least about 1 bar. Also described is a burner particularly suitable for use in this process.
Inventors:
Hoster, thomas
Humberg, Heinz
Humberg, Heinz
Application Number:
JP50902890A
Publication Date:
February 18, 1993
Filing Date:
June 25, 1990
Export Citation:
Assignee:
Mannesmann Actien Gezelshaft
International Classes:
C21C5/52; F23D1/00; F23K3/02; F27B3/08; F27B3/20; (IPC1-7): C21C5/52; F23D1/00; F27B3/08; F27B3/20
Attorney, Agent or Firm:
Okuyama Nao