• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Cleaner Production >Improving coal flotation using the mixture of candle soot and hydrocarbon oil as a novel flotation collector
【24h】

Improving coal flotation using the mixture of candle soot and hydrocarbon oil as a novel flotation collector

机译：烛煤和碳氢油混合物作为新型浮选捕收剂改善煤炭浮选

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An effective flotation collector determines the flotation performance and efficiency of fine coal particles. Generally, hydrocarbon oils, such as diesel and kerosene are widely applied in the flotation circuit in coal preparation plants. However, hydrocarbon oils are not effective enough for difficult-to-float coals, such as low rank coal and difficult to float coking coal. In this study, the mixture of candle soot and hydrocarbon oil (dodecane) was used as a novel flotation collector in the flotation of coking coal and low rank coal. X-ray photoelectron spectroscopy (XPS) and contact angle measurements were used to indicate the surface properties of candle soot. Scanning electron microscopy with energy dispersive spectrometer (SEM/EDS) and attachment time measurer were used to show the adsorption of candle soot on coal particle surface. XPS and contact angle results showed that the candle soot was very hydrophobic. SEM/EDS results showed the candle soot consisted of plenty of carbon nanoparticles which could attach and adsorb on the coal particle surface and hence shortens the attachment time of coal particle and bubble. The flotation recovery of both coking and low rank coals using the mixture of candle soot and dodecane as a collector were higher than that using solo dodecane as collector. The adsorption of candle soot and other ultra-fine particles on coal particle surface enhanced the surface hydrophobicity and floatability of coking and low rank coal particles. (C) 2018 Elsevier Ltd. All rights reserved.
机译：有效的浮选收集器决定了细煤颗粒的浮选性能和效率。通常，烃油，例如柴油和煤油被广泛应用于选煤厂的浮选回路中。然而，烃油对于难以浮选的煤（例如低等级煤和难以浮选的焦煤）不够有效。在这项研究中，烛煤和碳氢油（十二烷）的混合物被用作焦煤和低品位煤浮选中的新型浮选捕收剂。使用X射线光电子能谱（XPS）和接触角测量来指示蜡烛烟ot的表面特性。用能谱仪（SEM / EDS）和附着时间测量仪进行扫描电子显微镜观察烛煤在煤粉表面的吸附情况。 XPS和接触角结果表明，蜡烛烟灰非常疏水。 SEM / EDS结果表明，烟灰由大量碳纳米颗粒组成，可以附着和吸附在煤颗粒表面，从而缩短了煤颗粒与气泡的附着时间。使用烛灰和十二烷的混合物作为捕收剂的焦炭和低品位煤的浮选回收率均高于使用十二碳烷的浮选回收率。烟灰和其他超细颗粒在煤颗粒表面的吸附增强了焦化和低级煤颗粒的表面疏水性和漂浮性。 （C）2018 Elsevier Ltd.保留所有权利。

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