Process for utilising iron-containing wastes or residues

Details Process for utilising iron-containing wastes or residues Process for utilising iron-containing wastes or residues

1994-05-03

1995-07-25

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75468, 75549, C22B 702, C21B 1314

Patent

active

054358329

ABSTRACT:
In order to utilise wastes or residues containing iron in the oxide form and/or iron in the metallic form and/or containing carbon (38,25,34), a process is used with which molten pig iron (16) or steel preliminary products can be produced, iron ore (4) being reduced to sponge iron in a direct reduction zone (2), the sponge iron being melted in a melting-gasification zone (15) with the supply of carbon-containing material (29) with gasification of the carbon-containing material (29) to reducing gas, and the reducing gas is fed into the direct reduction zone (2), reacted there and drawn off as top gas.
In order to be able to utilise the wastes or residues completely and in an energy-saving manner, the wastes or residues (38, 25, 34) are collected separately in three groups depending on their chemical composition, namely a first group contains chiefly substances containing iron in the oxide form (38), a second group chiefly substances containing iron in the metallic form (25) and a third group chiefly carbon-containing substances (34), and the first group is charged into the direct reduction zone (2) and the second group and the third group are charged directly into the melting-gasification zone (15).

REFERENCES:
patent: 2373244 (1945-04-01), Holz
patent: 2836487 (1958-05-01), Fastje
patent: 2894831 (1959-07-01), Old
patent: 3494763 (1970-02-01), Kato
patent: 4328030 (1982-05-01), Tozaki
patent: 4854946 (1989-08-01), Heijwegen
patent: 5139567 (1992-08-01), Matsuoka

Affiliated with

Also associated with

Rating

Process for utilising iron-containing wastes or residues does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for utilising iron-containing wastes or residues, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for utilising iron-containing wastes or residues will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-737275