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Froth stability and entrainment evaluation of a novel frother for KCl/NaCl flotation
  • Linjian Wang,
  • Yanxia Xu
Linjian Wang
East China University of Science and Technology

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Yanxia Xu
East China University of Science and Technology
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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 of 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.
31 Aug 2022Submitted to AIChE Journal
01 Sep 2022Submission Checks Completed
01 Sep 2022Assigned to Editor
05 Sep 2022Reviewer(s) Assigned
14 Oct 2022Review(s) Completed, Editorial Evaluation Pending
16 Oct 2022Editorial Decision: Revise Major
14 Nov 20221st Revision Received
20 Nov 2022Submission Checks Completed
20 Nov 2022Assigned to Editor
20 Nov 2022Review(s) Completed, Editorial Evaluation Pending
25 Nov 2022Reviewer(s) Assigned
11 Jan 2023Editorial Decision: Accept