| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5347969 | Applied Surface Science | 2017 | 8 Pages |
Abstract
The activation mechanism of ammonium ions on the sulfidation of malachite (â201) was determined by density functional theory (DFT) calculations. Results of DFT calculations indicated that interlayer sulfidation occurs during the sulfidation process of malachite (â201). The absorption of both the ammonium ion and sulfide ion on the malachite (â201) surface is stronger than that of sulfur ion. After sulfidation was activated with ammonium ion, the Cu 3d orbital peak is closer to the Fermi level and characterized by a stronger peak value. Therefore, the addition of ammonium ions activated the sulfidation of malachite (â201), thereby improving the flotation performance.
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Authors
Dandan Wu, Yingbo Mao, Jiushuai Deng, Shuming Wen,