there was an excellent book from the the materials handling association (in
the US as youd expect)
covered all this the best i've seen.
Also a series called Conveying xxx (4 titles) out of england,but they were
more like a conference series only a little design info.
back of Link belt Manual has a little
-----Original Message-----
From: PipingDesign@yahoogroups.com
[mailto:PipingDesign@yahoogroups.com]On Behalf Of Steve McKenzie
Sent: Tuesday, September 20, 2005 5:20 AM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] Extreme Lumpy fluids - Design Reference.
Well er
they aint exacery liquids. More like crushed rock with horizontal
transport by proven conveyors, but vertical transport by chutes.
The horizontal bit is well covered by countless guides and codes.
However (semi)vertical (downwards) transport is dealt with in a
flimsy manner, and I have just had to fly in an overseas specialist
to help us improve vertical downwards discharge flow from a crusher.
The specialist advocates smooth self-centralizing passages,
computation of trajectories and a mantra of free flow. The price to
be paid is wear, which I can accept if loadings can be kept high and
practicable service intervals can be arranged. Our previous unwritten
philosophy was unwanted energy dissipation by rock box which results
in a jerky velocity profile through vertical conduits . Adopting a
free flow philosophy means we must shed unwanted energy continually
so free-falls are a nono. I expect there is a second price to be paid
and that is space.
The point of this meandering is that I have no design reference that
deals with the gravity transport of slabby solids, and certainly none
which takes advantage of passive velocity control." Most of my books
deal with bulk/mass flow only, and the single lump flow perspective
is a refreshingly new approach.
Has anyone seen papers of publications on handling lumpy solids under gravity flow from a single "particle/lump" perspective? If so, a reference would be appreciated.
Was going to attempt to justify the relevance of the question to this forum, but then decided it was easier to cop the flak.
Cheers
Steve
Yahoo! Groups Links Received on Tue Sep 20 11:13:00 2005
This archive was generated by hypermail 2.1.8 : Mon Oct 27 2008 - 20:24:09 EDT