Suspension hydrogen reduction of iron ore concentrate

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Publication Type dissertation
School or College College of Mines & Earth Sciences
Department Metallurgical Engineering
Author Choi, Moo Eob
Title Suspension hydrogen reduction of iron ore concentrate
Date 2010-08
Description A new ironmaking technology is under development at the University of Utah. This process produces iron directly from fine iron ore concentrate by a gas-solid suspension reduction, utilizing hydrogen as the main reducing agent for high reactivity and for the elimination of carbon dioxide emissions during ironmaking operation and also pursuing the direct use of concentrate to bypass the problematic pelletization/sintering and cokemaking steps in the steel industry. The technology is aimed at producing iron as a feed to the steelmaking process, eventually replacing the blast furnace. The purpose of this research was to perform the feasibility tests of the proposed process in terms of the material and energy balances and the kinetics of concentrate particle reduction by hydrogen, together with preliminary scale-up tests. The material and energy balance calculations have shown that the process would drastically reduce energy consumption compared with that required by the blast furnace and lower environmental pollution, especially CO2 emission, from the steel industry. The kinetic feasibility tests have also verified that the reduction rate of concentrate particles by hydrogen is sufficiently fast for a suspension reduction process and forms the most important basis for the new technology. Finally, the preliminary scale-up tests have shown that the scale-up of the proposed process is plausible if a proper method of heat supply is applied.
Type Text
Publisher University of Utah
Subject Suspension hydrogen reduction; Iron ore concentrate
Dissertation Institution University of Utah
Dissertation Name Doctor of Philosophy
Language eng
Rights Management Copyright © Moo Eob Choi 2010
Format Medium application/pdf
Format Extent 4,997,569 bytes
Source Original in Marriott LIbrary Special Collections, TN7.5 2010 .C46
ARK ark:/87278/s66q2c0x
Setname ir_etd
Date Created 2012-04-24
Date Modified 2017-06-14
ID 194605
Reference URL