Silica Behavior in the Alumina Carbothermic Reduction-chlorination Process

被引：1

作者：

Zhu, Fulong ^{[1
,2
,3
]}

Yang, Bin ^{[1
,2
]}

Yuan, Haibin ^{[1
,2
,3
]}

Yu, Qingchun ^{[1
,2
]}

Xu, Baoqiang ^{[1
,2
]}

Dai, Yongnian ^{[1
,2
]}

机构：

[1] Kunming Univ Sci & Technol, Natl Engn Lab Vacuum Met, Kunming 650093, Peoples R China

[2] Kunming Univ Sci & Technol, Key Lab Nonferrous Met Vacuum Met Yunnan Prov, Kunming 650093, Peoples R China

[3] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Peoples R China

来源：

JOM | 2011年 / 63卷 / 08期

基金：

高等学校博士学科点专项科研基金;

关键词：

Compendex;

D O I：

10.1007/s11837-011-0122-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The behavior of silica was investigated experimentally in an alumina carbothermic reduction process and chlorination process in vacuum. The results showed that, first, SiC was produced by SiO2 and C, and then Al4SiC4 was produced by Al4C3, Al4O4C, C, and SiC during the alumina carbothermic reduction process at about 1,763 K. C, Al3C4 and Al4O4C decreased and Al4SiC4 increased as content of SiO2 increased. The following chlorination process was blocked, and the recovery rate of aluminum decreased quickly compared with that without silica. It was inferred that silica might be unfavorable for aluminum extracted from alumina by carbothermic reduction-chlorination process in vacuum at about 1763 K.

引用

页码：119 / 122

页数：4

共 14 条

[1] High temperature sintering of SiC with oxide additives:: I.: Analysis in the SiC-Al2O3 and SiC-Al2O3-Y2O3 systems [J].

Baud, S ;

Thévenot, F ;

Pisch, A ;

Chatillon, C .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (01) :1-8

[2]

Fang Q. X., 2000, LIGHT MET, P8

[3] Thermodynamic calculation of the ternary system Al-Si-C [J].

Grobner, J ;

Lukas, HL ;

Aldinger, F .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 1996, 20 (02) :247-254

[4]

Huang X. M., 2008, ANAL METHODS MAT, P54

[5] Synthesis of Al4SiC4 [J].

Inoue, K ;

Yamaguchi, A .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2003, 86 (06) :1028-1030

[6] Silicon assistant carbothermal reduction for SiC powders [J].

Li, Kezhi ;

Wei, Jian ;

Li, Hejun ;

Wang, Chuang ;

Jiao, Gengsheng .

JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, 2008, 15 (04) :484-488

[7]

Li Qiu-xia, 2008, Chinese Journal of Nonferrous Metals, V18, P1550

[8]

[李秋霞 Li Qiuxia], 2009, [真空科学与技术学报, Journal of Vacuum Science and Technology], V29, P35

[9]

Liu Z., 2001, LIGHT METALS, V5, P7

[10]

Wang, 2006, CHINESE J VACUUM SCI, V26, P377

← 1 2 →