Interfacial Adsorption Mechanism of Diethyldithiocarbamate in High-Sulfur Residue Flotation
- 点击次数：
- 影响因子：2.8
- DOI码：10.3390/pr11051568
- 发表刊物：PROCESSES
- 关键字：Flotation；
High-sulfur residue；
Diethyldithiocarbamate；
DFTCo-adsorption model
- 摘要：Diethyldithiocarbamate (DDTC) has been employed in the sulfide ore flotation process, due to its excellent collection performance. Herein, we investigated the interfacial adsorption behavior of DDTC on four mineral phases of high-sulfur residue - sulfur, pyrite, sphalerite and lead sulfate. The adsorption behavior - adsorption structure and energy and electron localization function cross section - of DDTC and H2O were explored using density function theory calculation. The result was helpful to construct a co-adsorption model of DDTC and H2O, which was validated by the pure minerals flotation operation and the characterization of fourier transform infrared spectra. The co-adsorption model indicated that the DDTC adsorption on the sulfur, sphalerite and lead sulfate was weak with physical bonding, while its adsorption on the pyrite was strong with chemical bonding. Practical bench-scale operation of high-sulfur residue flotation was performed, whose result was different from that obtained from the pure mineral flotation. To explain the difference, our developed model predictions and the mineral fugacity pattern analysis on the high-sulfur residue flotation were synergistically used. Overall, this work first proposed the co-adsorption model of DDTC and H2O and provided important insights into the interfacial adsorption in the high-sulfur residue flotation.
- 论文类型：期刊论文
- 论文编号：1568
- 学科门类：工学
- 一级学科：冶金工程
- 文献类型：J
- 卷号：11
- 期号：5
- 是否译文：否
- 发表时间：2023-05-21
- 收录刊物：SCI、EI、SSCI
