| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 213432 | Hydrometallurgy | 2008 | 6 Pages |
Abstract
The preparation of manganese(IV) oxide from a Moroccan pyrolusite mine waste was studied. A sample of mine waste containing about 35% Mn was leached with 6.36 M HCl at 70 °C for 1 h with 98% leaching efficiency. The resulting solution was conditioned at pH 5 and sodium hypochlorite was added to obtain various oxide phases (Mn2O3, MnO2). Finally the oxides were transmuted by addition of nitric acid to obtain the α-MnO2, nH2O phase with 97% purity.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Y. Darmane, M. Cherkaoui, S. Kitane, A. Alaoui, A. Sebban, M. Ebn Touhami,