| 摘要 |
A centrifuge has a hub and a first bowl section extending about the hub. The first bowl section has a given diameter at a downstream end of a heavy phase transport path along the first bowl section. The centrifuge further comprises a second bowl section having an input end at the downstream end of the first bowl section. The input end of the second bowl section has a diameter which is greater than the diameter of the first bowl section at the downstream end thereof. The input end of the second bowl section is disposed radially outwardly of the first bowl section at the downstream end thereof. A feed accelerator is disposed at the downstream end of the first bowl section, and more particularly between the downstream end of the first bowl section and the input end of the section bowl section, for tangentially accelerating a thickened feed or cake between the downstream end of the first conical bowl section and the input end of the second bowl section. The feed accelerator serves to accelerate, in the direction of rotation (as opposed to radially accelerating), a thickened feed of nominally 40-60% solids moving from the downstream end of the first conical bowl section to the upstream end of the second conical bowl section. |
