Niobium, tantalum, and titanium fluoride solutions

被引：13

作者：

Nikolaev, A. I. ^{[1
]}

Kirichenko, N. V. ^{[1
]}

Maiorov, V. G. ^{[1
]}

机构：

[1] Russian Acad Sci, Kola Sci Ctr, Inst Chem & Technol Rare Elements & Mineral Raw M, Apatity 184209, Murmansk Oblast, Russia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2009年 / 54卷 / 04期

关键词：

EXTRACTION;

D O I：

10.1134/S0036023609040032

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Parameters for the preparation of concentrated tantalum, niobium, and titanium fluoride solutions by dissolution of their oxides or hydroxides in hydrofluoric acid were studied. Anatase titania, niobium oxide, and tantalum oxide calcined to 900A degrees C were found to have high dissolution rates. Solid phases separated upon the dissolution of niobium, tantalum, and titanium oxides in hydrofluoric acid were identified as NbO2F, TaO2F, Ta3O7F, and TiOF2. Niobium hydroxide dissolution in an autoclave at the atmospheric pressure gave various complex salts: NH4NbOF4 and (NH4)(3)Nb2OF11.

引用

页码：505 / 511

页数：7

共 13 条

[1]

Babkin A G., 1988, The Extraction of Niobium, Tantalum and other Elements from Fluoride Solutions

[2]

BABKIN AG, 1981, Patent No. 891567

[3]

Bhattacharyya SN., 1984, Solvent Extr Ion Exch, V2, P699, DOI [10.1080/07366298408918471, DOI 10.1080/07366298408918471]

[4] INVESTIGATION OF NB(V) AND TA(V) STATE IN FLUORIDE SOLUTIONS [J].

BUSLAEV, YA ;

NIKOLAEV, AI ;

ILYIN, EG ;

MAIOROV, VG .

JOURNAL OF FLUORINE CHEMISTRY, 1985, 29 (1-2) :51-51

[5]

Goroshchenko Ya. G., 1965, CHEM NIOBIUM TANTALU

[6]

GOROSHCHENKO YG, 1967, CHEM TITANIUM

[7]

He J., 1998, Tantalum-Niobium Int. Study Centre Bull, V93, P1

[8]

*INT CTR DIFFR DAT, 1989, POWD DIFFR FIL IN PH

[9]

MAIOROV VG, 2003, RUSS METALL+, P71

[10] Solvent extraction of niobium(V) and tantalum(V) from fluorometallate acid solutions [J].

Mayorov, VG ;

Nikolaev, AI .

HYDROMETALLURGY, 1996, 41 (01) :71-78

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