A Review on Characteristics and Alumina Extraction of Coal Gangue in China

ZENG Peng; XIE Haiyun; JIN Yanling; ZHANG Pei; LIU Yanhao; CHEN Jialing

doi:10.13779/j.cnki.issn1001-0076.2022.06.003

2022 Vol. 42, No. 6

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(6): 21-29

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ZENG Peng, XIE Haiyun, JIN Yanling, ZHANG Pei, LIU Yanhao, CHEN Jialing. A Review on Characteristics and Alumina Extraction of Coal Gangue in China[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 21-29. doi: 10.13779/j.cnki.issn1001-0076.2022.06.003

Citation:

ZENG Peng, XIE Haiyun, JIN Yanling, ZHANG Pei, LIU Yanhao, CHEN Jialing. A Review on Characteristics and Alumina Extraction of Coal Gangue in China[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 21-29. doi: 10.13779/j.cnki.issn1001-0076.2022.06.003

A Review on Characteristics and Alumina Extraction of Coal Gangue in China

1.
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
2.
Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources, Kunming 650093, Yunnan, China

More Information

Corresponding author: XIE Haiyun, xie-haiyun@163.com

Received Date: 23 May 2022

Publish Date: 26 December 2022

Abstract

Abstract

Coal gangue is a solid waste produced in the process of coal production and processing, with a large accumulation. Under the background of national dual-carbon strategy, the comprehensive utilization of coal gangue attracts worldwide attention. The characteristics of the resources, composition and aluminum-containing components of gangue in China were analyzed. Furthermore, the technological progress of extracting alumina from coal gangue was summarized including the principle, technological process, and industrialization process of acid and alkali extraction of alumina, and the key problems constraining its industrialization were pointed out. It was proposed to accelerate the research and improve the environmental protection and efficient alumina extraction technology from coal gangue to promote the high-value utilization of coal gangue.
- coal gangue /
- alumina /
- process flow /
- acid hydrolysis

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References

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