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Title: System and method for producing metallic iron nodules

Abstract

A method for producing metallic iron nodules by assembling a shielding entry system to introduce coarse carbonaceous material greater than 6 mesh in to the furnace atmosphere at location(s) where the temperature of the furnace atmosphere adjacent at least partially reduced reducible iron bearing material is between about 2200 and 2650.degree. F. (1200 and 1450.degree. C.), the shielding entry system adapted to inhibit emission of infrared radiation from the furnace atmosphere and seal the furnace atmosphere from exterior atmosphere while introducing coarse carbonaceous material greater than 6 mesh into the furnace to be distributed over the at least partially reduced reducible iron bearing material, and heating the covered at least partially reduced reducible iron bearing material in a fusion atmosphere to assist in fusion and inhibit reoxidation of the reduced material during fusion to assist in fusion and inhibit reoxidation of the reduced material in forming metallic iron nodules.

Inventors:
 [1];  [2];  [1];  [1];  [3]
  1. Grand Rapids, MN
  2. Bovey, MN
  3. Hibbing, MN
Issue Date:
Research Org.:
Nu-Iron Technology, LLC (Charlotte, NC); Univesity of Minnesota
Sponsoring Org.:
USDOE
OSTI Identifier:
1027246
Patent Number(s):
8021460
Application Number:
12/569,176
Assignee:
Nu-Iron Technology, LLC (Charlotte, NC)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F27 - FURNACES F27B - FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
C - CHEMISTRY C21 - METALLURGY OF IRON C21B - MANUFACTURE OF IRON OR STEEL
DOE Contract Number:  
FG36-05GO15185
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Bleifuss, Rodney L, Englund, David J, Iwasaki, Iwao, Lindgren, Andrew J, and Kiesel, Richard F. System and method for producing metallic iron nodules. United States: N. p., 2011. Web.
Bleifuss, Rodney L, Englund, David J, Iwasaki, Iwao, Lindgren, Andrew J, & Kiesel, Richard F. System and method for producing metallic iron nodules. United States.
Bleifuss, Rodney L, Englund, David J, Iwasaki, Iwao, Lindgren, Andrew J, and Kiesel, Richard F. Tue . "System and method for producing metallic iron nodules". United States. https://www.osti.gov/servlets/purl/1027246.
@article{osti_1027246,
title = {System and method for producing metallic iron nodules},
author = {Bleifuss, Rodney L and Englund, David J and Iwasaki, Iwao and Lindgren, Andrew J and Kiesel, Richard F},
abstractNote = {A method for producing metallic iron nodules by assembling a shielding entry system to introduce coarse carbonaceous material greater than 6 mesh in to the furnace atmosphere at location(s) where the temperature of the furnace atmosphere adjacent at least partially reduced reducible iron bearing material is between about 2200 and 2650.degree. F. (1200 and 1450.degree. C.), the shielding entry system adapted to inhibit emission of infrared radiation from the furnace atmosphere and seal the furnace atmosphere from exterior atmosphere while introducing coarse carbonaceous material greater than 6 mesh into the furnace to be distributed over the at least partially reduced reducible iron bearing material, and heating the covered at least partially reduced reducible iron bearing material in a fusion atmosphere to assist in fusion and inhibit reoxidation of the reduced material during fusion to assist in fusion and inhibit reoxidation of the reduced material in forming metallic iron nodules.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {9}
}

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