×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

yellow cake dust conveying velocity

yellow cake dust conveying velocity

yellow cake dust conveying velocity

(OP)
hi Folks
repost from nuclear engineering forum

do anyone has any reference regarding the settling velocity of yellow cake (uranium oxide) dust.

Need it to ensure min velocity is adhered to prevent settling in duct system


thanks

RE: yellow cake dust conveying velocity

My guess is that you need to be in turbulent flow regime at the very least, not laminar so work out your Re number and make sure its above I think 4000.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: yellow cake dust conveying velocity

URANIUM CAKE SLURRY (water, not dust)
Description
MATERIAL:
10-15% by weight Uranium Trioxide (yellow cake). 8% Ammonium Sulfate in water solution. Specific gravity of slurry is 1.8.

Slurry grind suspension from 30% plus 20 mesh to 100% minus 20 mesh.

Grinds to 100% minus 20 mesh. Need extra horsepower because of high specific gravity.

AB MIXER:

Model 6 x 3, toothed impeller/liner, 20 HP, 1800 RPM, 1/8" grid. Dicon recirculates slurry at 25 gpm to 250 gallon tank.

BENEFITs Grinds to 100% minus 20 mesh. Need extra horsepower because of high specific gravity.


--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."

RE: yellow cake dust conveying velocity

Nicolai,

Pneumatic conveying can be a mixture of science and art. I've seen 2,000-9,000 fpm as a minimum velocity recommended to keep materials in suspensions. This value is very dependent on the density of the particles as well as the particle sizes being conveyed. You should account for the entire distribution, not just the [D4,3] average.

Perhaps you should quantify your material (density, particle size distribution) and see if there is any published literature on similar materials if you cannon find your exact one.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close