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Thank you Stanier...I was trying to decide between that book and Slurry Systems Handbook, unfortunately the Slurry Systems Handbook, as I discovered after I ordered it, doesn't well cover vertical systems. I will definately look at Slurry Transport using Centrifugal Pumps

Thank you Katmar...with the horizontal velocities being as high as they are, they will more than be adequate then to suspend the particles. Thanks again for your help.

Thanks Mark, I will definately run some tests once the entire system is up and running. The main pumping system pumps the slurry at 40% solids by weight, then we seperate out the iron (approx 48%) and recirculate 25% of the waste material through a separate line, so the recirculation is a...

Katmar...I have been thinking more and more about your post and think you may have solved it for me. In the horizontal piping, the limiting settling velocity is greatly increased due to the requirement for the velocity differential. In the vertical plane however, the settling velocity would be...

Based on the units in the equation...gravity is in ft/sec squared and pipe diameter is in feet...giving you feet squared per second squared...take the square root and you are left with feet per second. Out of curiosity, how are you calculating the sphere size? I am thinking that you are...

It was calculated using the Durand's formula for settling velocities of particles of widely graded sizing (from Warman's Slurry Pumping Handbook). The formula is: Settling Velocity = FL * square root of (2gD((SGs-SGL)/SGL)) where FL is obtained from Durand's Modified Limiting Settling Velocity...

I do plan to use rubber lined for the entire system as there is an erosion issue, I will check to see the availability of the 2.5" however. My fear is that it will act like a particle classifier should the particles become too large. I was more curious that since you can not truly get a...

Thank-you for the link, I am looking into a licence for the site, definately some useful info there. The specs for the system I have are as follows: -pipe length (actual) is 60' all of which is vertical discharging into a bottom fed distributor -Actual slurry velocity is 4.25ft/sec -Settling...

I am pumping an iron ore slurry approximately 60' through a vertical pipe. After calculating the limiting settling velocity I have found the actual velocity to be roughly 1 ft/sec slower than the settling velocity, I am trying to avoid dropping pipe size due to a drastic rise in velocity. My...

I work in Canada, however I like the idea of haveing the disclisure statement stating that the only master copy is the one that I will have on file and that all others are uncontrolled copies. Quite often the client wants an electronically stamped copy, so that statement may be a way to provide...

I have a concern of my engineering stamp being digitally lifted off of drawings and being used on drawings / documents which I have not actually stamped. I thought that throught the use of Adobe and PDF files this would be protected but have come to discover that Adobe Professional allows you...

I have a concern of my engineering stamp being digitally lifted off of drawings and being used on drawings / documents which I have not actually stamped. I thought that throught the use of Adobe and PDF files this would be protected but have come to discover that Adobe Professional allows you...

A quick thank-you for all your insight and suggestions, sorry it took so long to send this back. I ended up using basically the same idea 'bhwtam' had suggested with a control valve to open and close the second pipeline. Thanks again for your suggestions and insight David

As I slowly get back into the engineering field after having been away from it for about 6 yrs or so, I've found a problem that while seems simple enough, the solution simply escapes me (too much rust built up on the brain I think). I have a pump that will be used to pump relatively small...