首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3篇
  一般工业技术   3篇
  2018年   1篇
  2003年   1篇
  2000年   1篇
排序方式: 共有3条查询结果,搜索用时 36 毫秒
1
1.
本文介绍了一种智能化氯气浓度计的原理、仪器及换能器设计要点 ,最后给出实验结果 ,经工厂使用与化学分析对比 ,其或然误差小于 0 .1 %  相似文献
2.
The use of a measurement matrix operator is considered for modeling the influence of the environment. It is shown that it is possible to construct a set of power scales by utilizing this operator. A cubic scale enables the Periodic System of the chemical elements to be reproduced.  相似文献
3.
The binary dense media plays a significant role in the air dense medium gas–solid fluidized bed for coal separation. Magnetite powder with a narrow size fraction of −0.20 + 0.15 mm and −0.35 + 0.25 mm quartz sand were mixed in proportion to form a binary dense media. The separation performance of −13 + 6 mm coal was evaluated through the combination of various indicators of the yield and ash content of products, combustible material recovery, relative segregation degree, and probable error. Results suggested that the optimal separation performance was achieved by an adjustment of the appropriate operational gas velocities of the bed and use of the binary dense media with a suitable composition as the separating medium. The proportion of the quartz sand mixed in the binary dense media should be adjusted as 10% or 20% and the fluidization number could be varied from 1.6 to 1.8. The satisfactory ash content and yield of clean coal were 10.12% and 68.29%, respectively, with a combustible material recovery of 92.09%. The largest relative segregation degree was 0.95, and the minimum probable error was 0.085 g/cm3 with a standard deviation of 0.024 g/cm3. These findings indicated efficient coal cleaning.  相似文献
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号