Fabrication of nano-layer-structure alumina powders from an alumina concentrate through an intensified Bayer process

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成果类型：

期刊论文

作者：

Gao, Feng;Li, Hui;Zhang, Jihao;Zhu, Yuanyi;Wang, Youbin;...

通讯作者：

Gao, F

作者机构：

[Fujita, Toyohisa; Gao, F; Wang, Youbin; Zhang, Jihao; Zhu, Yuanyi; Li, Hui; Gao, Feng; Wang, Kaituo] Guangxi Univ, Guangxi Key Lab Proc Nonferrous Met & Featured Ma, MOE Key Lab New Proc Technol Nonferrous Met & Mat, Nanning 530004, Peoples R China.

[Fujita, Toyohisa; Wang, Youbin; Zhang, Jihao; Zhu, Yuanyi; Li, Hui; Gao, Feng; Wang, Kaituo] Guangxi Univ, Sch Resources Environm & Mat, Nanning 530004, Peoples R China.

[Wei, Yuezhou] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.

通讯机构：

[Gao, F ] G

Guangxi Univ, Guangxi Key Lab Proc Nonferrous Met & Featured Ma, MOE Key Lab New Proc Technol Nonferrous Met & Mat, Nanning 530004, Peoples R China.

语种：

英文

关键词：

Al2O3 concentrate;Thermodynamic analysis;Kinetic analysis;Orthogonal experiments;Al2O3 powders

期刊：

Chemical Engineering and Processing - Process Intensification

ISSN：

0255-2701

年：

2022

卷：

175

页码：

108907

DOI：

10.1016/j.cep.2022.108907

基金类别：

CRediT authorship contribution statement Feng Gao: Investigation, Supervision, Project administration, acquisition, Writing – review & editing. Hui Li: Investigation, Writing – original draft. Jihao Zhang: Investigation, Formal analysis. Yuanyi Zhu: Methodology, Formal analysis. Youbin Wang: Supervision. Kaituo Wang: Visualization, Supervision. Yuezhou Wei: Supervision. Toyohisa Fujita: Supervision.

机构署名：

本校为其他机构

院系归属：

核科学技术学院

摘要：

An intensified Bayer process (high temperature, high pressure, and high alkalinity) was used to recover Al2O3 to prepare nano-layer-structure Al2O3 powders using Al2O3 concentrate separated from large-scale pyrite tailings as the raw material. This process consisted of four main steps: pretreatment of the concentrate, leaching of the Al2O3, decomposition of the sodium aluminate solution, and sintering of the decomposed product at a high temperature. The results of the orthogonal leaching experiment revealed that the relative leaching efficiency...

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Fabrication of nano-layer-structure alumina powders from an alumina concentrate through an intensified Bayer process

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