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Title: Cyclone reduction of taconite. Final report

Abstract

A cyclone reactor system for the partial reduction and melting of taconite concentrate fines has been engineered, designed and operated. A non-transferred arc plasma torch was employed as a heat source. Taconite fines, carbon monoxide, and carbon dioxide were fed axially into the reactor, while the plasma gas was introduced tangentially into the cyclone. The average reactor temperature was maintained at above 1400{degrees}C, and reduction experiments were performed under various conditions. The influence of the following parameters on the reduction of taconite was investigated experimentally; carbon monoxide to carbon dioxide inlet feed ratio, carbon monoxide inlet partial pressure, and average reactor temperature. The interactions of the graphite lining with carbon dioxide and taconite were also studied. An attempt was made to characterize the flow behavior of the molten product within the cyclone. The results suggest that the system may approach a plug flow reactor, with little back mixing. Finally, a fundamental mathematical model was developed. The model describes the flow dynamics of gases and solid particles in a cyclone reactor, energy exchange, mass transfer, and the chemical kinetics associated with cyclone smelting of taconite concentrate fines. The influence of the various parameters on the reduction and melting of taconite particlesmore » was evaluated theoretically.« less

Authors:
; ; ; ;  [1]
  1. College of Mines and Earth Resources, University of Idaho, Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
167222
Report Number(s):
INEL-95/0258
ON: DE96003556
DOE Contract Number:
AC07-94ID13223
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: May 1995
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; IRON ORES; REDUCTION; CYCLONE COMBUSTORS; PYROMETALLURGY; SMELTERS; SMELTING; FLUID FLOW; COMBUSTION PROPERTIES; CHEMICAL REACTIONS; IMPURITIES; FLOW MODELS; FLUID MECHANICS; PROGRESS REPORT

Citation Formats

Taylor, P.R., Bartlett, R.W., Abdel-latif, M.A., Hou, X., and Kumar, P. Cyclone reduction of taconite. Final report. United States: N. p., 1995. Web. doi:10.2172/167222.
Taylor, P.R., Bartlett, R.W., Abdel-latif, M.A., Hou, X., & Kumar, P. Cyclone reduction of taconite. Final report. United States. doi:10.2172/167222.
Taylor, P.R., Bartlett, R.W., Abdel-latif, M.A., Hou, X., and Kumar, P. Mon . "Cyclone reduction of taconite. Final report". United States. doi:10.2172/167222. https://www.osti.gov/servlets/purl/167222.
@article{osti_167222,
title = {Cyclone reduction of taconite. Final report},
author = {Taylor, P.R. and Bartlett, R.W. and Abdel-latif, M.A. and Hou, X. and Kumar, P.},
abstractNote = {A cyclone reactor system for the partial reduction and melting of taconite concentrate fines has been engineered, designed and operated. A non-transferred arc plasma torch was employed as a heat source. Taconite fines, carbon monoxide, and carbon dioxide were fed axially into the reactor, while the plasma gas was introduced tangentially into the cyclone. The average reactor temperature was maintained at above 1400{degrees}C, and reduction experiments were performed under various conditions. The influence of the following parameters on the reduction of taconite was investigated experimentally; carbon monoxide to carbon dioxide inlet feed ratio, carbon monoxide inlet partial pressure, and average reactor temperature. The interactions of the graphite lining with carbon dioxide and taconite were also studied. An attempt was made to characterize the flow behavior of the molten product within the cyclone. The results suggest that the system may approach a plug flow reactor, with little back mixing. Finally, a fundamental mathematical model was developed. The model describes the flow dynamics of gases and solid particles in a cyclone reactor, energy exchange, mass transfer, and the chemical kinetics associated with cyclone smelting of taconite concentrate fines. The influence of the various parameters on the reduction and melting of taconite particles was evaluated theoretically.},
doi = {10.2172/167222},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon May 01 00:00:00 EDT 1995},
month = {Mon May 01 00:00:00 EDT 1995}
}

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