Solubility of Chromium(III) Oxide in the Molten Cryolite System

被引：3
|
作者：
Sulekova, Dasa [1 ]
Danielik, Vladimir [1 ]
Fellner, Pavel [1 ]
Thonstad, Jomar [2 ]
机构：
[1] Slovak Univ Technol Bratislava, Inst Inorgan Chem Technol & Mat, Fac Chem & Food Technol, Bratislava 81237, Slovakia
[2] Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2013年 / 44卷 / 02期
关键词：
CeO2; Boron Nitride; Cryolite; AlF3; Chromium Oxide;
D O I：
10.1007/s11663-012-9788-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The solubility of Cr(III) species originating from dissolution of Cr2O3 in cryolite-based melts was studied in the temperature range 1173 K to 1293 K (900 A degrees C to 1020 A degrees C). The molar ratio n(NaF)/n(AlF3) was in the range of 1.4 to 2.6. It was found that the solubility depends markedly on the molar ratio n(NaF)/n(AlF3), high ratios resulting in higher solubility. A semi-empirical model describing the solubility of Cr2O3 was developed. The standard deviation between calculated and experimental data is 10 pm (ca 2.4 pct).
引用
收藏
页码：328 / 331
页数：4
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