Method and system for producing metallic iron nuggets
Abstract
A method and system for producing metallic iron nuggets may include providing multiple layers of agglomerates, such as briquettes, balls and extrusions, of a reducible mixture of reducing material (such as carbonaceous material) and of a reducible iron bearing material (such as iron oxide) on a hearth material layer (such as carbonaceous material) and providing a coarse overlayer of carbonaceous material over at least some of the agglomerates. Heating the agglomerates of reducible mixture to 1425.degree. C. or 1400.degree. C. or 1375.degree. C. results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15.
- Inventors:
- Issue Date:
- Research Org.:
- Nu-Iron Technology, LLC, Charlotte, NC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1082345
- Patent Number(s):
- 8333823
- Application Number:
- 12/847,591
- Assignee:
- Nu-Iron Technology, LLC (Charlotte, NC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C21 - METALLURGY OF IRON C21B - MANUFACTURE OF IRON OR STEEL
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
- DOE Contract Number:
- FG36-05GO15185
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE
Citation Formats
Iwasaki, Iwao, Kiesel, Richard F., Englund, David J, and Hendrickson, Dave. Method and system for producing metallic iron nuggets. United States: N. p., 2012.
Web.
Iwasaki, Iwao, Kiesel, Richard F., Englund, David J, & Hendrickson, Dave. Method and system for producing metallic iron nuggets. United States.
Iwasaki, Iwao, Kiesel, Richard F., Englund, David J, and Hendrickson, Dave. Tue .
"Method and system for producing metallic iron nuggets". United States. https://www.osti.gov/servlets/purl/1082345.
@article{osti_1082345,
title = {Method and system for producing metallic iron nuggets},
author = {Iwasaki, Iwao and Kiesel, Richard F. and Englund, David J and Hendrickson, Dave},
abstractNote = {A method and system for producing metallic iron nuggets may include providing multiple layers of agglomerates, such as briquettes, balls and extrusions, of a reducible mixture of reducing material (such as carbonaceous material) and of a reducible iron bearing material (such as iron oxide) on a hearth material layer (such as carbonaceous material) and providing a coarse overlayer of carbonaceous material over at least some of the agglomerates. Heating the agglomerates of reducible mixture to 1425.degree. C. or 1400.degree. C. or 1375.degree. C. results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 18 00:00:00 EST 2012},
month = {Tue Dec 18 00:00:00 EST 2012}
}