×
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

Use of CO2 in cryogenic grinding

Use of CO2 in cryogenic grinding

Use of CO2 in cryogenic grinding

(OP)
I would be very grateful if someone could provide some info (or where I could get it) about the use of CO2 in cryogenic grinding. All the info I've found about cryogenic grinding deals with the use of liquid nitrogen as the cryogenic agent. We have performed some tests on our product that show that CO2 would be enough to achieve an efficient grinding. Therefore, I need some basic data such as typical consumptions, handling, operation conditions, etc. Thanks in advance.

RE: Use of CO2 in cryogenic grinding

I have worked in the area of cryogenic grinding for many years. The vast majority of grinders use liquid N2(lin) for this application. The reasons are: ease of use, high cooling capability, complete phase change to gas, low pressure operation, ect. CO2 on the other hand can become a problem in grinding operations. Three issues in particular - 1. Phase change is to both gas & solid form - This causes extra ampere loading on a grinding mill, hence less efficiency. 2. Solids will carry over with the ground product and accumulate in product containers, hence continued phase change from solid to gas can cause pressure problems or O2 depleted atmosphere at collection points.
3. CO2 is not as easily controlled as N2. You may be able to do the job with CO2 but history says N2 does it better. Consumption depends on several factors such as material, start size, finish requirement, mill type, ect. I have found over the years the only accurate way to arrive at consumption and rate data is to conduct a trial on the material. That is why all the large gas companies have test labs. Hope this helps.

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


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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