EXTRACTION OF CRITICAL ELECTRONIC MATERIALS FROM STEELMAKING WASTES
The stable domestic supply of gallium, indium, and germanium has been identified as a critical need for the United States. Electric arc furnace dusts, processed to recover zinc, produce a residue that could be a potential source of these critical materials. An industrial zinc leach residue was characterized to determine its particle size, chemical composition, and predominant mineral phases. Heated, atmospheric, agitated leaching using sulfuric acid and hydrochloric acid was examined to determine the extractions of gallium, indium, and germanium as a function of concentration and temperature. Extractions of gallium were found to be similar to iron in all experiments. The maximum percentage of Ga, Ge, and In leached into solution were 71%, 63%, and 48%, respectively.
W. C. Hartzell and M. S. Moats, "EXTRACTION OF CRITICAL ELECTRONIC MATERIALS FROM STEELMAKING WASTES," SME Annual Conference and Expo 2023, Springer, Jan 2023.
The definitive version is available at https://doi.org/10.1007/s42461-023-00819-w
Materials Science and Engineering
International Standard Book Number (ISBN)
Article - Conference proceedings
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01 Jan 2023