文献类型：期刊文献

英文题名：Froth stability and entrainment evaluation of a novel frother for KCl/NaCl flotation

作者：Wang, Linjian[1,2];Xu, Yanxia[3,4];Song, Xingfu[1,2,5]

机构：[1]East China Univ Sci & Technol, Engn Res Ctr Resources Proc Engn, Minist Educ Resource, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake Re, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai, Peoples R China;[4]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Engn Res Ctr Resources Proc Engn, Minist Educ Resource, Shanghai 200237, Peoples R China

年份：2023

卷号：69

期号：6

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20230613552840);WOS:【SCI-EXPANDED(收录号:WOS:000920813100001)】；

基金：ACKNOWLEDGMENTS The research study was supported by the National Basic Research Program of China (Grant No. 2018YFC0604800) and the Program of Shanghai Academic/Technology Research Leader (Grant No. 18XD1424600).

语种：英文

外文关键词：dipropylene glycol butyl ether; flotation technology; froth properties; froth stabilizing mechanism; KCl/NaCl flotation

摘要：The rate of KCl recovery by froth flotation using low-grade carnallite is 70%-85%. Herein, a novel frother, dipropylene glycol butyl ether (DPNB), was prepared to increase the flotation efficiency of KCl recovery systems. DPNB could be applied at only half the dosage of the conventional frother methyl isobutyl carbinol (MIBC) and achieve a KCl recovery rate of 94.8%-98.6% with a high KCl grade (63.2%-66.5%). To date, these results are the best reported for pneumatic flotation. DPNB had a 10% higher maximum dynamic stability factor compared with MIBC; moreover, the apparent entrainment velocity of DPNB was half that of MIBC. The molecular structure of DPNB had hydroxyl and ether groups, which promoted interactions with water, thereby contributing to its excellent froth stability. DPNB is environment friendly owing to its low volatility and, thus, a promising frother for the green and highly efficient flotation of KCl/NaCl.