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2022 | OriginalPaper | Buchkapitel

Recovery of Iron from High-Iron Bayer Red Mud by Melting Reduction with Spent Cathode Carbon Block

verfasst von : Xiaofei Li, Ting’an Zhang, Kun Wang, Guozhi Lyu, Xin Chen

Erschienen in: Light Metals 2022

Verlag: Springer International Publishing

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Abstract

Red mud and waste cathode carbon block are two major solid wastes of the aluminum industry. In this study, an innovative method has been proposed for co-treatment of red mud and spent cathode carbon block to reuse carbon and recover iron by melting reduction. The effects of parameters such as temperature, alkalinity, reaction time, and the CaF₂ addition on the process were investigated. According to the experiment, the suitable reaction conditions were the reduction temperature of 1350 ℃, the alkalinity of 1.0, the reaction time of 30 min, and the optimal CaF₂ addition was 10 g. The Fe recovery rate was 91.60% which can be directly used for electric furnace steelmaking. This work should help to improve the future large-scale, high-value, and zero waste utilization of red mud. It was also of great significance for the harmless treatment of spent cathode carbon blocks and alleviating the shortage of iron ore resources in China.

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Vorheriges Kapitel Removal of Fluorine, Chlorine, and Nitrogen from Aluminum Dross by Wet Process

Nächstes Kapitel Effect of Thermal Activation on Phase Transformation and Pre-desiliconization of Low-Grade Bauxite

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Titel: Recovery of Iron from High-Iron Bayer Red Mud by Melting Reduction with Spent Cathode Carbon Block
verfasst von: Xiaofei Li
Ting’an Zhang
Kun Wang
Guozhi Lyu
Xin Chen
Verlag: Springer International Publishing
Buch: Light Metals 2022
Print ISBN: 978-3-030-92528-4

Electronic ISBN: 978-3-030-92529-1

Copyright-Jahr: 2022
DOI: https://doi.org/10.1007/978-3-030-92529-1_8

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