Crystallization of sodium perrhenate from NaReO4-H2O-C2H5OH solutions at 298 K

被引：16

作者：

Casas, Jesus M. ^{[1
]}

Sepulveda, Elizabeth ^{[1
]}

Bravo, Loreto ^{[1
]}

Cifuentes, Luis ^{[1
]}

机构：

[1] Univ Chile, Dept Ingn Minas, Santiago, Chile

来源：

HYDROMETALLURGY | 2012年 / 113卷

关键词：

Rhenium; Sodium perrhenate; Crystallization; Drowning-out; Ethanol;

D O I：

10.1016/j.hydromet.2011.12.022

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Crystallization of sodium perrhenate (NaReO4) from aqueous solution was studied by means of laboratory scale experiments at 298 K. NaReO4 has a very high solubility in aqueous solution (>1130 g/L at 298 K) so crystallization was induced by the addition of ethanol (drowning-out crystallization process). This resulted in well crystalline NaReO4 particles which required less energy and water than the conventional evaporative crystallization industrial process. The crystallization of NaReO4 took 5-10 min and could be achieved in 1 or 2 stages by controlling the solution super-saturation by the addition of ethanol in the 25-75 vol.% range. The ethanol in solution could be recovered by distillation and recycled. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：192 / 194

页数：3

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