Electrochemical hydrometallurgy for sustainable ironmaking
OwnerHao SHEN, Changao Zhou +2inventors
InventorsHao SHEN, Changao Zhou, Yulin Liu, Chao Wang
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Abstract
Disclosed herein is a system and method for ironmaking using a comproportionation system and an electrowinning system coupled with a direct air capture system comprising an electro-synthesizer system, a carbon dioxide capture system, and a carbonation system for sequestering carbon. The system and method enables the robust processing of various iron ores, while improving the energy efficiency of iron reduction, reducing environmental impact of mining and metallurgy, and mitigating emissions associated with the whole ironmaking process.
Claims20
An electrochemical hydrometallurgical for sustainable ironmaking (EHSI) system comprising:
- one or more flow electro-synthesizer systems configured to produce an acid solution and a hydroxide base solution;
- one or more carbon dioxide capturing systems that is in fluid communication with the one or more flow electro-synthesizer systems and that are configured to capture a carbon dioxide from a gas source by converting the carbon dioxide to a carbonate-containing solution;
- one or more acid leaching systems that are optionally in fluid communication with the one or more flow electro-synthesizer systems and that are configured to receive an iron-containing material comprising iron and produce a leachate comprising at least one of Fe3+ and Fe2+;
- one or more comproportionation systems that are in fluid communication with the one or more acid leaching systems and that are configured to reduce Fe3+ in the leachate to Fe2+ and produce a Fe3+-free leachate;
- one or more electrowinning systems that is in fluid communication with the one or more comproportionation systems and that are configured to convert the Fe2+ in the Fe3+-free leachate to Fe0;
- and
- one or more carbonation systems that are in fluid communication with the one or more electrowinning systems and with the one or more carbon dioxide capturing systems and that are configured to sequester carbon from the carbonate-containing solution.
Dependencies are inferred from the claim text.