...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >A novel process for preparation of ultra-clean micronized coal by high pressure water jet comminution technique
【24h】

A novel process for preparation of ultra-clean micronized coal by high pressure water jet comminution technique

机译：高压水射流粉碎技术制备超净粉煤的新工艺

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

A novel process for the preparation of ultra-clean micronized coal is presented in this paper. High pressure water jet mill replacing the ball mill is employed for coal comminution in the new preparation process, which is the essential difference from the traditional one. To compare the new preparation process with the traditional one, the comparison experiments were performed, with froth flotation tests of the fine particles ground by both mills using 0# diesel oil and n-dodecane as collector, 2-octanol as frother, and sink-float separation tests using mixtures of carbon tetrachloride-benzene and carbon tetrachloride-bromoform as dense liquid. Different parameters including combustible recovery, ash content of the clean coal, separation efficiency, and energy consumption were investigated based on the two different preparation processes. The results show that the new preparation process has high combustible recovery, low ash content of the product, high separation efficiency, and low energy consumption compared with the traditional one. The comminution mechanism of high pressure water jet mill is introduced in this paper. The high pressure water jet comminution technique has great potential in coal pulverization, having the advantages of low energy consumption, low iron content, and low equipment wear.
机译：本文提出了一种制备超净微粉煤的新方法。在新的制备过程中，用高压水射流磨代替了球磨机进行了煤粉粉碎，这是与传统方法的本质区别。为了将新的制备工艺与传统的制备工艺进行比较，进行了对比实验，对两家工厂使用0＃柴油和正十二烷作为捕收剂，2-辛醇作为起泡剂以及下沉的两个工厂研磨的细颗粒进行泡沫浮选试验。使用四氯化碳-苯和四氯化碳-溴仿的混合物作为稠液进行浮选分离试验。基于两种不同的制备工艺，研究了可燃回收率，清洁煤灰分，分离效率和能耗等不同参数。结果表明，与传统工艺相比，新工艺具有较高的可燃回收率，产品灰分低，分离效率高，能耗低。介绍了高压水射流粉碎机的粉碎机理。高压喷水粉碎技术在粉煤方面具有很大的潜力，具有能耗低，铁含量低，设备磨损少的优点。

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