Methods and systems for recovering products from iron and steel slag

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United States of America Patent

PATENT NO 11162158
APP PUB NO 20180245182A1
SERIAL NO

15759938

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Abstract

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Systems and methods for processing slag produced by iron and steel making processes are disclosed. The slag is treated produce a series of valued industrial products, such as metal oxides, metal carbonates, rare-earth metals, and water glass. The systems and methods also integrate slag processing with CO2 sequestration and flue gas desulphurization. Processing slag minimizes the land use for stockpiling or landfilling wastes produced from iron and steel making processes and protects the ground water underneath. Overall, the solid and gaseous emissions of an energy-intensive and highly polluted industrial process have been largely reduced, recycled and valorized in order to achieve a near zero-emission goal.

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Patent Owner(s)

Patent OwnerAddress
UNIV COLUMBIA412 LOW MEMORIAL LIBRARY 535 WEST 116TH STREET NEW YORK NY 10027 UNITED STATES OF AMERICA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Park, Ah-Hyung Alissa New York, US 16 33
Zhou, Xiaozhou New York, US 12 43

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