化工进展 ›› 2016, Vol. 35 ›› Issue (05): 1321-1325.DOI: 10.16085/j.issn.1000-6613.2016.05.009

• 化工过程与装备 • 上一篇    下一篇

面向氯化钾浮选分离过程的超声强化

成怀刚, 张晓曦, 程芳琴   

  1. 山西大学资源与环境工程研究所, 国家环境保护煤炭废弃物资源化高效利用技术重点实验室, 山西 太原 030006
  • 收稿日期:2015-11-10 修回日期:2015-12-02 出版日期:2016-05-05 发布日期:2016-05-05
  • 通讯作者: 程芳琴,教授,博士生导师。E-mail cfangqin@sxu.edu.cn。
  • 作者简介:成怀刚(1978-),男,副教授,硕士生导师,主要从事低品位资源综合利用与环境工程的研究。E-mail chenghg@sxu.edu.cn。
  • 基金资助:
    国家自然科学基金项目(21376144,51104097)。

Strengthening flotation of potassium chloride using the ultrasonic pretreatment

CHENG Huaigang, ZHANG Xiaoxi, CHENG Fangqin   

  1. Institute of Resources and Environment Engineering, State Environment Protection Key Laboratory of Efficient Utilization of Coal Waste Resources, Shanxi University, Taiyuan 030006, Shanxi, China
  • Received:2015-11-10 Revised:2015-12-02 Online:2016-05-05 Published:2016-05-05

摘要: 研究了超声波对氯化钾颗粒和十八胺盐酸盐的形貌及分散性的影响规律,并用于强化钾盐浮选分离过程,提高钾盐的捕收率。通过扫描电子显微镜观察到经超声处理后的氯化钾颗粒表面更为粗糙,形状多呈现椭球形。将超声处理不同时间的氯化钾颗粒进行系列浮选实验,结果表明,随着超声时间的增加氯化钾的捕收率稳定上升,超声40min的颗粒的捕收率可从14.32%增加到46.66%。此外,通过显微镜观察到,经处理后的捕收剂十八胺盐酸盐在氯化钾饱和液中有更好的分散性,从而使浮选氯化钾的捕收率增加。结果显示捕收剂经超声处理20min后,可使氯化钾的捕收率由20.84%增加到94.24%。因此,超声波预处理是强化钾盐浮选的一种有效手段。

关键词: 分离, 浮选, 表面活性剂, 氯化钾, 超声波

Abstract: The objective of this paper is to improve the recovery of soluble potassium chloride flotation by ultrasonic pretreatment. Particles treated by ultrasonic wave had rough surfaces and were ellipsoid shaped, verified by the scanning electron microscope. The flotation results of ultrasonic wave treated potassium chloride particles revealed that the potassium chloride particles recovery increased from 14.32% to 46.66% after treated for 40min. Besides, the ultrasonic wave treated collector, i.e., octadecylamine hydrochloride, had better dispersity in the saturated potassium chloride solutions than the untreated one, resulting in a higher flotation recovery. The potassium chloride particles recovery increased from 20.84% to 94.24% when the octadecylamine hydrochloride was treated for 20min using ultrasonic wave. Therefore, the ultrasonic pretreatment was proven to be one of the effective methods to strengthen the flotation of potassium chloride.

Key words: separation, flotation, surfactants, potassium chloride, ultrasonic wave

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