04-08-2014, 12:35 PM
Granulated sugar is normally unloaded from tanker trucks using vacuum motors located on the back of the trailers. The vacuum motors pull the sugar out of the tankers and push it up to the top of the silo to be deposited. In the bakery facility where I was a microbiologist the truck mounted vacuum pumps were assisted by vacuum pumps that were located inside the plant. I'm assuming that rail cars would have some type of assist from vacuum pumps located on site since these silos are in the 90' height range.
Larry
Larry