×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

powder and pellets extrusion

powder and pellets extrusion

powder and pellets extrusion

(OP)
Hello,

I am involved in the design of a finishing section of a polyolefin plant.
Is there any issue in extruding pellets and powder at the same time? Does it cost much more than doing the two separatly?
This would be to extrude off grade pellets with  powder from reactor.

Thanks,
Gwen

RE: powder and pellets extrusion

Gwen,

It really depends on the materials of the pellets & powder.  If they are compatible with each other, then  there shouldn't be too much of a problem extruding both together.  What materials are the components?

Jeff

RE: powder and pellets extrusion

(OP)
Thanks Jeff,

The product is the same and is pelletized to comply with the production wheel. It is after reprocessed with powder coming directly from reactor (both are polypropylene of same MFI).
Does that imply a high cost increase of the extruder (10t/h)? What about the typical market price for 10 or 25t/h extruders for PP?...

Gwen

RE: powder and pellets extrusion

Gwen,

It is possible but the main issue will be sifting of the powder through the gaps in the pellets assuming you are pre blending. If you feed the powder and pellets seperately using different feeders you should not have any problems. As a side note I may be interested in purchasing your off spec PP can you give your contact information so we can discuss? My email is sjkman@yahoo.com.

Thanks

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!


Resources