Dissolution behavior of alumina in molten aluminum electrolyte

Author

Yang, Youjian ; Wang, Zhaowen ; Fu, Weiqin ; Gao, Bingliang ; Hu, Xianwei ; Yu, Yaxin ; Liu, Yingle

Author_Institution

Sch. of Mater. & Metall., Northeastern Univ., Shenyang, China

fYear

2010

fDate

5-7 Nov. 2010

Firstpage

1

Lastpage

6

Abstract

Alumina is the raw material in the aluminum electrolysis industry. The dissolution property of alumina is an important index. Generally, faster dissolution rate and higher solubility are required. In this paper, the dissolution behavior of six types of industrial alumina samples in cryolite-based melts was studied by using a quartz transparent cell. Furthermore, the influencing factors on the dissolution rate and solubility of alumina are analyzed and discussed. It is found that the dissolution phenomena of the fluorinated alumina is quite different from the other industrial alumina, and the dissolution rate and solubility of the fluorinated alumina are approximately twice that of the other industrial alumina.

Keywords

alumina; aluminium manufacture; dissolving; electrolytes; liquid metals; alumina dissolution behavior; aluminum electrolysis industry; cryolite-based melts; molten aluminum electrolyte; Aluminum; Electrochemical processes; Furnaces; Raw materials; Temperature control; Wind power generation; X-ray scattering; α-Al2O3; dissolution behavior; dissolution rate; fluorinated alumina; manufactured alumina; quartz transparent cell; solubility;

fLanguage

English

Publisher

ieee

Conference_Titel

World Non-Grid-Connected Wind Power and Energy Conference (WNWEC), 2010

Conference_Location

Nanjing

Print_ISBN

978-1-4244-8920-6

Electronic_ISBN

978-1-4244-8921-3

Type

conf

DOI

10.1109/WNWEC.2010.5673290

Filename

5673290