Title

Carbon Dioxide Sequestration with Steelmaking Slag: Process Feasibility and Reactor Design

Abstract

The goal of this research is to develop a functional sequestration process using steelmaking slag for permanent capture of carbon dioxide emitted from steelmaking offgas. A parallel benefit of this process is rapid chemical stabilization of the slag minerals with reduced swelling or leaching potential. This paper summarizes the results of the project including mineralogical features of carbonate formation in steelmaking slag, study of the reaction mechanisms, thermogravimetric analysis of the reaction between solid-state slag and CO2, design and testing of a two-stage lab scale reactor system, METSIM modeling of possible reactor designs, and exploration of the economic feasibility of the process based on operating costs, metals recovery and credit for CO2 sequestration.

Department(s)

Materials Science and Engineering

Sponsor(s)

American Iron and Steel Institute
United States. Department of Energy

Keywords and Phrases

CO2; Metal Recovery; Metallurgy; Reactor

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2008 Association for Iron & Steel Technology (AIST), All rights reserved.

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