Removing and stabilizing as from copper refining circuits by hydrothermal processing

Authors
Monhemius, AJ Swash, PM
Citation
Aj. Monhemius et Pm. Swash, Removing and stabilizing as from copper refining circuits by hydrothermal processing, JOM-J MIN, 51(9), 1999, pp. 30-33
Citations number
9
Categorie Soggetti
Metallurgy
Journal title
JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY
ISSN journal
10474838 → ACNP
Volume
51
Issue
9
Year of publication
1999
Pages
30 - 33
Database
ISI
SICI code
1047-4838(199909)51:9<30:RASAFC>2.0.ZU;2-F
Abstract
Experimental testwork has shown that arsenic can be removed from arsenic-be aring solutions by hydrothermal precipitation at temperatures in th 170-200 degrees C range. The presence of Fe(III) is required for combination with As(V) to form the crystalline hydrated ferric arsenate known as scorodite ( FeAsO4. 2H(2)O). The contained arsenic is effectively immobilized by incorp oration into a crystalline, low-solubility compound. Process options are su ggested for disposing of arsenic in copper electrorefinery bleed liquors.