کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
586724 | 878229 | 2010 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Study on safe air transporting velocity of nanograde aluminum, iron, and titanium Study on safe air transporting velocity of nanograde aluminum, iron, and titanium](/preview/png/586724.png)
The process of delivering nanograde metal powders by a high-speed carrier gas is often subject to high explosion risks. This study adopted initial flow rates of 13.1, 8.5, 6.5, and 3.5 m/s for air transporting 30-nm titanium powder, 35-nm iron powder, and 35-nm aluminum powder to gauge the impact on a pipe bend in a 20-l-apparatus. The test results revealed that the 30-nm titanium powder caused an explosion at all initial flow rates; the 35-nm iron powder also caused an explosion, but dust explosion and sintering were eliminated when the flow rate was adjusted to less than 3.5 m/s; and the 35-nm aluminum powder exhibited no explosion or sintering at all flow rates. When pure nitrogen was used for transporting nanograde metal powders, no explosions occurred for all the three types of metal powders. The minimum ignition energy for these three types of nanograde metal powders was less than 1 mJ.
Journal: Journal of Loss Prevention in the Process Industries - Volume 23, Issue 2, March 2010, Pages 308–311