Method and apparatus for protecting an injection device disposed

Details Method and apparatus for protecting an injection device disposed Method and apparatus for protecting an injection device disposed

1993-06-29

1995-04-04

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

266 46, 266189, 266270, 75465, C21B 716

Patent

active

054033780

ABSTRACT:
To prevent burn-back at a coal dust injection lance which projects into a hot blast conduit of a blast furnace, cooling is effected using atomized coolant. Water is preferred as the coolant. The carrier gas used for the atomized water is either air or the oxygen which is injected through the lance for complete combustion of the coal dust.

REFERENCES:
patent: 1518854 (1924-12-01), Kirby
patent: 4700930 (1987-10-01), de Lassat de Pressigny et al.
patent: 4887800 (1989-12-01), Hotta et al.
patent: 5018458 (1991-05-01), McIntyre et al.
"Investigation Pulverized Coal Injection with Oxygen at NKK", Steel Times, Feb. 1990, pp. 83-865.

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