High-temperature NMR study of Al dissolution in cryolitic melts

被引：9

作者：

Nuta, L ^{[1
]}

Bessada, C ^{[1
]}

Veron, E ^{[1
]}

Matzen, G ^{[1
]}

机构：

[1] CNRS, CRMHT, F-45071 Orleans 2, France

来源：

COMPTES RENDUS CHIMIE | 2004年 / 7卷 / 3-4期

关键词：

Al-27; Na-23; F-19; high-temperature NMR; aluminium electrolysis; NaF-AlF3-Al;

D O I：

10.1016/j.crci.2003.12.015

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The dissolution of aluminium in cryolitic melts is the major cause of the loss in current efficiency during the industrial process of aluminium electrolysis. These melts are corrosive and not easy to handle experimentally. Using the laser-heated device, associated with a tightly closed crucible, we have studied different compositions of the NaF-AIF(3)-Al system by Al-27, Na-23 and F-19 in situ NMR at 1030 degreesC. The samples were also characterized after rapid cooling at room temperature by MAS NMR, X-rays diffraction and microscopy in order to describe the structure of the solidified phases. (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.

引用

页码：395 / 400

页数：6

共 50 条

[1] Alumina dissolution in cryolitic melts: A literature review
Wang, X
LIGHT METALS 2000 METAUX LEGERS, PROCEEDINGS, 2000, : 41 - 54
[2] Al3+ coordination in cryolitic melts:: A computer simulation study
Castiglione, MJ
Ribeiro, MCC
Wilson, M
Madden, PA
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 1999, 54 (10-11): : 605 - 610
[3] Liquidus Temperature Depression in Cryolitic Melts
Solheim, Asbjorn
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2012, 43 (04): : 995 - 1000
[4] Liquidus Temperature Depression in Cryolitic Melts
Asbjørn Solheim
Metallurgical and Materials Transactions B, 2012, 43 : 995 - 1000
[5] DIFFUSIVE MOTION IN ALKALI SILICATE MELTS - AN NMR-STUDY AT HIGH-TEMPERATURE
LIU, SB
STEBBINS, JF
SCHNEIDER, E
PINES, A
GEOCHIMICA ET COSMOCHIMICA ACTA, 1988, 52 (02) : 527 - 538
[6] Structure of high-temperature NaF-AlF3-Al2O3 melts:: A multinuclear NMR study
Lacassagne, V
Bessada, C
Florian, P
Bouvet, S
Ollivier, B
Coutures, JP
Massiot, D
JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (08): : 1862 - 1868
[7] Structure and dynamics of magnesium in silicate melts:: A high-temperature 25Mg NMR study
George, AM
Stebbins, JF
AMERICAN MINERALOGIST, 1998, 83 (9-10) : 1022 - 1029
[8] Dissolution behavior of palladium and rhodium in glass melts: Implications for the viscosity and electrical conductivity of high-temperature melts
Zhao, Xing
Wang, Yi
Lin, Peng
Li, Lili
Jiao, Limin
Wu, Zhihao
Guo, Zifang
Luo, Guangnan
Lin, Mingzhang
PROGRESS IN NUCLEAR ENERGY, 2023, 164
[9] Study of NaF-AIF3 melts by high-temperature 27Al NMR spectroscopy:: Comparison with results from Raman spectroscopy
Robert, E
Lacassagne, V
Bessada, C
Massiot, D
Gilbert, B
Coutures, JP
INORGANIC CHEMISTRY, 1999, 38 (02) : 214 - 217
[10] NMR-STUDY OF PLATINUM AT HIGH-TEMPERATURE
SHAHAM, M
ELHANANY, U
ZAMIR, D
PHYSICAL REVIEW B, 1978, 17 (09): : 3513 - 3517

← 1 2 3 4 5 →