Pumping Bingham Plastics

Gents + 2

I have been requested to prepare some tails disposal pumping options using thickened tails from a paste thickener. The process consultant has told me to expect a process fluid with Bingham plastic properties, a yield stress of around 100Pa and a consistency of baby poo. Quantities will be around 700TPH solids and transport distance around 12km.
All to be sorted by monday - no sweat - who wants a life anyway? Before I bury my head in books (e.g. Wilson, Addie, Sellgren and Clift, has anyone seen any good design references for estimating pipe friction loss with this sort of stuff?
Will probably go to a recip type pump in order to be sure I dont wind up with a frozen pipe because the thickener had an "episode".

Thanks

Steve Received on Thu Oct 07 04:19:00 2004