par Berkol, I.;Derie, René 
;Ghodsi, Mehdi
Référence International Journal of Refractory Metals and Hard Materials, 4, 1, page (43-47)
Publication Publié, 1985-03
;Ghodsi, Mehdi Référence International Journal of Refractory Metals and Hard Materials, 4, 1, page (43-47)
Publication Publié, 1985-03
Article révisé par les pairs
| Résumé : | Anthoinite (tungsten aluminate hydrate) is a minor constituent of the ferberite deposits of Central Africa. At the present time, the poor anthoinite concentrates (30% WO//3) produced by the ore treatment plants are hardly marketable. The paper shows that, in hydrothermal conditions, moderately concentrated ammonia and ammonium carbonate solutions extract tungsten from anthoinite without dissolving any element of the gangue. Chemical treatment becomes therefore much simpler, since an ammonium tungstate solution is obtained directly. |
