Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1636633 | Transactions of Nonferrous Metals Society of China | 2013 | 10 Pages |
Abstract
A novel process for sulfidation of ZnO by co-grinding with sulfur and reductive additives (P, Fe, Al, and Mg) was developed. The sulfidation extent of ZnO with the addition of P, Fe, Al or Mg can reach 85.2%, 81.6%, 96.7% and 92.6% after grinding for 4, 6, 1 and 1 h, respectively. Based on the chemical phase composition analysis and morphological characteristics of sulfidized products by XRD, SEM and TEM, a possible reaction mechanism, mechanically induced self-propagating reaction (MSR), was proposed to explain the sulfidization reaction. In addition, the floatability of sulfidized products was investigated for the recovery of metal sulfide and ZnS can be concentrated with a high concentration ratio and concentrate grade. By using the sulfidizing process, it is expected that the recovery of zinc from the wastes or purification of heavy-metal-containing hazardous residues is technically feasible.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Li-yuan CHAI, Yan-jie LIANG, Yong KE, Xiao-bo MIN, Chong-jian TANG, Hai-jing ZHANG, Xian-de XIE, Cui-yu YUAN,