Volume 42, Issue 5 pp. 1011-1017
Research Article

Colorimetric Methods for Determining Fe, V, and Ni Contents in Coke and Anodes

Hang Sun

Hang Sun

University of Quebec at Chicoutimi, UQAC Research Chair on Industrial Materials (CHIMI), 555, boul. de l'Université, G7H 2B1 Chicoutimi (Quebec), Canada

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Duygu Kocaefe

Corresponding Author

Duygu Kocaefe

University of Quebec at Chicoutimi, UQAC Research Chair on Industrial Materials (CHIMI), 555, boul. de l'Université, G7H 2B1 Chicoutimi (Quebec), Canada

Correspondence: Duygu Kocaefe ([email protected]), University of Quebec at Chicoutimi, UQAC Research Chair on Industrial Materials (CHIMI), 555, boul. de l'Université, Chicoutimi (Quebec) G7H 2B1, Canada.Search for more papers by this author
Dipankar Bhattacharyay

Dipankar Bhattacharyay

University of Quebec at Chicoutimi, UQAC Research Chair on Industrial Materials (CHIMI), 555, boul. de l'Université, G7H 2B1 Chicoutimi (Quebec), Canada

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Yasar Kocaefe

Yasar Kocaefe

University of Quebec at Chicoutimi, UQAC Research Chair on Industrial Materials (CHIMI), 555, boul. de l'Université, G7H 2B1 Chicoutimi (Quebec), Canada

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Jules Côté

Jules Côté

University of Quebec at Chicoutimi, UQAC Research Chair on Industrial Materials (CHIMI), 555, boul. de l'Université, G7H 2B1 Chicoutimi (Quebec), Canada

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Patrick Coulombe

Patrick Coulombe

University of Quebec at Chicoutimi, UQAC Research Chair on Industrial Materials (CHIMI), 555, boul. de l'Université, G7H 2B1 Chicoutimi (Quebec), Canada

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First published: 13 February 2019
Citations: 2

Abstract

Prebaked carbon anodes are used in the electrolytic production of aluminum. They are made of petroleum coke, butts, recycled anodes, and coal tar pitch. The anode quality, which depends on the raw material quality and the production conditions, has an important impact on the cell performance. Metallic impurities (V, Ni, and Fe) found in cokes and anodes increase the carbon consumption by catalyzing the air and CO2 reactivities. In turn, this increases the production cost, energy consumption, and the emission of greenhouse gases. The current methods for detecting the metallic impurities in carbon are time consuming and require intensive sample preparation, skilled personnel, and costly reagents. In this work, simple, rapid, and effective tools were developed using colorimetric methods.

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