• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Flotation Symposium >Selective Flotation of Quartz and Feldspar Using Non-Ionic Surfactant
【24h】

Selective Flotation of Quartz and Feldspar Using Non-Ionic Surfactant

机译：使用非离子表面活性剂的石英和长石的选择性浮选

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to develop the HF-free flotation reagent system, the main objective of this investigation was to study the possibility of separation of quartz from feldspar using non-ionic surfactants as the collector. The non-ionic surfactants used were polyoxyethyl cethyl ether (PECE) and polyethylene glycol monocethyl ether (PGME). The flotation behaviour of quartz and microcline with PECE and PGME was investigated. Each surfactant was a good selective collector for quartz with its recovery being influenced by pH and surfactant concentration. Quartz is floated favourably by both types of polyoxyethylene non-ionic surfactant whereas microcline was not so much. The floatability of quartz increases as the oxyethylene length of surfactants increases. Zeta potential measurements in the system of PGME /mineral were also carried out. It was determined that in the absence of PGME the points of zero charge for quartz and microcline should be approximately at pH 2.5 and 1.8, respectively. The addition of PGME to the system causes both minerals to become less negatively charged. Differences in the zeta potential value between quartz and microcline, in the presence of PGME, were detected. It can be suggested that the interaction of the oxyethylene group to the microcline surface should not be as strong as that to the quartz surface. In the mixed surfactant system of PGME and dodecylamine acetate (DAA), a small addition of DAA causes drastic enhancement of quartz flotation in the wide pH range of 1 ~ 10. In the mixed surfactant system selective flotation of quartz from microcline would be anticipated at pH <3.0. The quartz floatability is thought to be as a result of the hydrophobic interaction between the adsorbed surfactant chains at the mineral-water interface.
机译：为了开发无氟氯丙浮选试剂系统，本研究的主要目的是研究使用非离子表面活性剂作为收集器将石英分离的可能性。所用的非离子表面活性剂是聚氧乙基乙醚（PECE）和聚乙二醇单甲醚（PGME）。研究了石英和微皮带与PECE和PGME的浮选行为。每个表面活性剂是用于石英的良好选择性收集器，其恢复受到pH和表面活性剂浓度的影响。通过两种类型的聚氧乙烯非离子表面活性剂，石英浮动，而微量线不是如此。随着表面活性剂的氧乙烯长度增加，石英的可浮动性增加。还进行了PGME /矿物系统中的Zeta电位测量。确定在没有PGME的情况下，石英和微量线的零电荷点分别应分别在pH 2.5和1.8处。向系统添加PGME导致矿物质均可减少带负电。检测在PGME存在下石英和微电量之间Zeta电位值之间的差异。可以表明氧乙烯基对微管表面的相互作用不应与石英表面一样强。在PGME和十二烷基胺（DAA）的混合表面活性剂体系中，少量添加DAA在1〜10的宽pH范围内导致石英浮选的急剧增强。在MicroClin的混合表面活性剂系统中，可以预期石英的系统选择性浮选。 pH <3.0。将石英浮动性被认为是矿泉水界面在吸附表面活性链之间的疏水相互作用的结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号