无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2023, Vol. 55 ›› Issue (5): 39-44.doi: 10.19964/j.issn.1006-4990.2022-0481

• 研究与开发 • 上一篇    下一篇

氯化钾浮选中通气量和温度对二丙二醇丁醚起泡性能的影响

王林涧1(), 常黎明2, 陈杭1, 宋兴福1()   

  1. 1.华东理工大学,上海 200237
    2.青海盐湖元品化工有限责任公司,青海格尔木 816000
  • 收稿日期:2022-08-15 出版日期:2023-05-10 发布日期:2023-05-15
  • 通讯作者: 宋兴福(1970— ),男,教授,主要研究方向为资源高效循环利用(资源化学工程)与废弃物资源化处理(环境化学工程)的相关理论研究与技术开发;E-mail:xfsong@ecust.edu.cn
  • 作者简介:王林涧(1993— ),女,博士,主要研究方向为KCl浮选;E-mail:443790775@qq.com
  • 基金资助:
    国家重点研发项目(2016YFC0401203)

Effect of air flow and temperature on DPNB froth properties in KCl flotation

WANG Linjian1(), CHANG Liming2, CHEN Hang1, SONG Xingfu1()   

  1. 1. East China University of Science and Technology,Shanghai 200237,China
    2. Qinghai Yanhu Yuanpin Chemical Industry Co. Ltd., Geermu 816000,China
  • Received:2022-08-15 Published:2023-05-10 Online:2023-05-15

摘要:

在氯化钾浮选过程中,起泡剂的起泡性能对浮选有重要的影响。为了考察起泡剂二丙二醇丁醚(DPNB)在饱和卤水中的起泡性能,利用动态泡沫分析仪研究通气量和温度对DPNB泡沫稳定性和泡沫排液过程的影响。结果表明,随着通气量的增加,泡沫动态稳定性先增加后降低,而表观夹带液速(Je)逐渐增加;当通气量为0.3 L/min时,泡沫稳定性最好;当通气量从0.2 L/min增加到0.5 L/min时,Je增加了12.64 mm/s。随着温度的升高,泡沫动态稳定性先增加后降低,在298 K时达到最大值,而Je逐渐降低。因此,DPNB用于氯化钾浮选时,在通气量为0.3 L/min、温度为298 K条件下可产生稳定的泡沫,并可有效降低水回收率,有利于确保更好的浮选回收率和精矿品位。

关键词: 氯化钾, 浮选, 二丙二醇丁醚, 起泡性能, 泡沫夹带

Abstract:

In KCl flotation,the froth properties of frother have an important impact on the flotation.In order to investigate the froth properties of dipropylene glycol butyl ether(DPNB) in saturated brine,dynamic foam analyzer DFA-100 was used to study the effects of air flow and temperature on froth stability and froth entrainment process of DPNB.The results showed that with the increase of air flow,the dynamic stability of froth was increased firstly and then decreased,while the superficial liquid entrainment velocity(Je) was increased gradually.When the air flow was 0.3 L/min,DPNB could produce enough froth with best stability.The Je was increased by 12.64 mm/s with the air flow increasing from 0.2 L/min to 0.5 L/min.Besides,with the increase of temperature,the dynamic stability of froth was increased firstly and then decreased,getting to maximum at 298 K,while the entrainment rate was decreased gradually.Therefore,when DPNB was used for KCl flotation,it could produce stable foam under the condition of 0.3 L/min air flow and 298 K,and could effectively reduce the water recovery rate,which was conducive to ensuring better flotation recovery rate and concentrate grade.

Key words: KCl, flotation, dipropylene glycol butyl ether, froth properties, froth entrainment

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