Recovery of tungsten by liquid-liquid extraction from a wolframite concentrate after fusion with sodium hydroxide

被引：51

作者：

Paulino, Jessica Frontino ^{[1
]}

Afonso, Julio Carlos ^{[1
]}

Mantovano, Jose Luiz ^{[2
]}

Vianna, Claudio Augusto ^{[2
]}

Silva Dias da Cunha, Jose Waldemar ^{[2
]}

机构：

[1] Univ Fed Rio de Janeiro, BR-21941909 Rio De Janeiro, Brazil

[2] Inst Nucl Engn, BR-21941906 Rio De Janeiro, Brazil

来源：

HYDROMETALLURGY | 2012年 / 127卷

关键词：

Tungsten; Wolframite; Alkali fusion; Liquid-liquid extraction; SOLVENT-EXTRACTION; SCHEELITE CONCENTRATE; MOLYBDENUM VI; ALLOY SCRAP; DIISODODECYLAMINE; DEHPA;

D O I：

10.1016/j.hydromet.2012.07.018

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

This work presents the results of the tungsten recovery from a wolframite concentrate (61.5% WO3) from Igarape Manteiga (Rondonia - Brazil) after fusion with NaOH followed by leaching with water. The optimum fusion conditions required temperatures above 550 degrees C to avoid partial manganese leaching. 98.6% of tungsten was leached as Na2WO4 after fusion at 650 degrees C for 1 h. More than 99% of the element was extracted in one stage with Aliquat 336 or Alamine 336 (5-10 vol.% in kerosene, A/O=1 (v/v), 25 degrees C). Stripping was easily performed in one stage (>99.9%) with 2 mol L-1 NH3(aq.) (A/O=1 v/v, 25 degrees C) when Alamine 336 was the extractant. Tungsten was recovered as ammonium paratungstate (APT). (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：121 / 124

页数：4

共 23 条

[1]

Cano T.M., 2010, TUNGSTENIO SUMARIO M, P32

[2]

Carvalho R.A.G., 1991, HYDROMETALLURGY, V26, P137

[3] SOLVENT-EXTRACTION OF MOLYBDENUM AND TUNGSTEN BY ALAMINE-336 AND DEHPA [J].

COCA, J ;

DIEZ, FV ;

MORIS, MA .

HYDROMETALLURGY, 1990, 25 (02) :125-135

[4] Solvent extraction of molybdenum (VI), tungsten (VI) and rhenium (VII) by diisododecylamine from leach liquors [J].

Gerhardt, NI ;

Palant, AA ;

Petrova, VA ;

Tagirov, RK .

HYDROMETALLURGY, 2001, 60 (01) :1-5

[5]

Goddard J.B., 1982, United States Patent, Patent No. 4346061

[6] Studies on the preparation of pure ammonium para tungstate from tungsten alloy scrap [J].

Hairunnisha, S. ;

Sendil, G. K. ;

Rethinaraj, J. Prabhakar ;

Srinivasan, G. N. ;

Adaikkalam, P. ;

Kulandaisamy, S. .

HYDROMETALLURGY, 2007, 85 (2-4) :67-71

[7] Processing mineral raw materials in Siberia: ores of molybdenum, tungsten, lead and gold [J].

Kholmogorov, AG ;

Kononova, ON .

HYDROMETALLURGY, 2005, 76 (1-2) :37-54

[8] A review of tungsten: From environmental obscurity to scrutiny [J].

Koutsospyros, A. ;

Braida, W. ;

Christodoulatos, C. ;

Dermatas, D. ;

Strigul, N. .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 136 (01) :1-19

[9] FROM TUNGSTEN CONCENTRATES AND SCRAP TO HIGHLY PURE AMMONIUM PARATUNGSTATE (APT) [J].

LASSNER, E .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 1995, 13 (1-3) :35-44

[10] A novel process for recovery of tungsten and vanadium from a leach solution of tungsten alloy scrap [J].

Luo, L ;

Miyazaki, T ;

Shibayama, A ;

Yen, W ;

Fujita, T .

MINERALS ENGINEERING, 2003, 16 (07) :665-670

← 1 2 3 →