Apparatus for direct reduction of iron ore

Details Apparatus for direct reduction of iron ore Apparatus for direct reduction of iron ore

1976-09-09

1978-07-04

Dost, Gerald A.

Metallurgical apparatus

With means treating or handling gases exhausted by treating...

By means recycling exhaust gas

266186, C21B 1100

Patent

active

040984966

ABSTRACT:
The stack gas from a shaft furnace in which iron ore is directly reduced is cooled and filtered and then subjected to steam so as to convert its carbon monoxide into carbon dioxide and water. The carbon dioxide and water are then scrubbed out of this stack gas so as to leave virtually pure hydrogen which is heated to a temperature between 400.degree. and 600.degree. C and added to the output of an oxygen reactor that transforms coal and oxygen into a synthetic gas having a carbon-monoxide/hydrogen volume ratio of at least 1.5:1. The addition of this hydrogen to the output of the reactor lowers the volume ratio to 1:1 at most so that this mixture can be reintroduced into the shaft furnace at a temperature of around 1000.degree. C as a reducing gas.

REFERENCES:
patent: 1638684 (1927-08-01), Edwin
patent: 2740706 (1956-04-01), Paull et al.
patent: 2865732 (1958-12-01), Jensen
patent: 3844766 (1974-10-01), Beggs
patent: 3909446 (1975-09-01), Miyashita et al.
patent: 3954444 (1976-05-01), Wenzel et al.

Affiliated with

Also associated with

Rating

Apparatus for direct reduction of iron ore does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for direct reduction of iron ore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for direct reduction of iron ore will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-275047