Powder and Bulk Engineering
Tuesday, September 02, 2014
Skip Navigation LinksHome) Item Details
Powder and Bulk Engineering is a technical publication devoted to readers in the bulk solids market, worldwide.
Case Histories
Item Details:
Publication Date: 04/2008
Pages: 4
PDF Format
Related Item(s):
Recommended Item:
Seals sustain dryer’s vacuum

A chemical producer installs mechanical seals on its horizontal rotary vacuum dryer to maintain vacuum and increase productivity.

A chemical manufacturer produces two chemical compound resins as abrasive pastes that have to be dried to powders. The pastes each contain a different solvent and are dried separately at different temperatures in the same horizontal rotary vacuum dryer. The company was having problems maintaining a tight seal around a shaft that runs through the dryer. This prevented the dryer from holding full vacuum and also allowed material to migrate out of the dryer around the shaft, causing abrasion and product purity concerns. The company knew that it needed to find cost-effective seals that would effectively hold the dryer’s vacuum and eliminate abrasive wear.

To read this entire article:

You may purchase this article now for personal use. Simply click the Buy Item button above, enter your payment details, and download the article. It will be available to you for 7 days for viewing, printing, or saving for future reference. All articles are copyrighted by CSC Publishing, Inc. and cannot be used for commercial purposes without express permission in writing from the Publisher. This includes but is not limited to: web posting, printing, or sharing via email.


Your payment information is forwarded in an encrypted form, using 40- or 128-bit Secure Socket Layer technology, only to our payment gateway ( for processing.


To view an article, you must have Acrobat Reader installed on your computer. Click on the icon to download Acrobat Reader free of charge.

      Copyright 2014, CSC Publishing Inc. ALL Rights Reserved * Privacy policy