Much like other minerals, gypsum can present various challenges during processing. This presentation looks at some of the basics of processing gypsum, the challenges that are presented during gypsum processing, and how to tackle those issues.

1. Tackling
Gypsum
Challenges
Processing
Experts in process design and material
processing for over 60 years.

2. Gypsum
Is commonly used as a soil amendment for its
calcium value and ability to naturally aerate
compacted soils.

3. Before further use, mined gypsum
is often processed into a more
usable form.

4. And despite widespread use, some
characteristics can make
processing gypsum a challenge.

5. Gypsum
is abrasive

6. Gypsum
is abrasive
is dusty &
prone to
clumping

7. Gypsum
is abrasive
is dusty &
prone to
clumping
can vary
considerably

8. Problem:
Gypsum is abrasive.

9. Use rotary dryers to dry gypsum ore
and “polish” it, helping to reduce the
abrasive characteristics of gypsum.
Solution:

10. In addition, choosing heavy-duty
equipment will maximize equipment life.
Use rotary dryers to dry gypsum ore
and “polish” it, helping to reduce the
abrasive characteristics of gypsum.
Solution:

11. Problem:
Gypsum is dusty and
prone to clumping.

12. Solution:
Pelletize gypsum to reduce dust and
clumping tendencies.

13. Pelletizing
can turn a raw powder into pellet form,
reducing dust, and improving handling.

14. Pelletizing
Pin Mixers Disc Pelletizers Rotary Dryers
Equipment

15. Pin Mixers
work to pre-condition gypsum.
A binder is mixed with gypsum
material to de-dust it and begin
forming pellets.

16. Disc
Grow the gypsum
pellets to the
desired size,
creating round,
uniform pellets.
Pelletizers

17. Rotary Dryers
polish the pellets and dry them
into their final form: dust-free,
easy to handle, uniform pellets,
ideal for use in agricultural
applications.

18. Simplified Pelletizing Diagram
1. Raw feed
2. Pin/Paddle Mixer
3. Binder Feed
4. Spray Rate
5. Disc Pelletizer
6. Feed Onto Pelletizer
7. Binder Feed
8. Liquid Spray System
9. Transfer Conveyor
10. Rotary Dryer
11. Vibrating Screen
12. Oversize Mill
13. Recycle
14. Surge hopper

19. Problem:
Gypsum composition can vary
considerably depending on what
region it came from.

20. Solution:
Run tests on gypsum to
determine exact process
specifications.

21. Testing in a lab can help to
work out process variables
and confirm specifications
needed to achieve desired
product results.

22. has been working with gypsum for over 60
years, providing testing, process design
and development, and manufacturing of
gypsum processing equipment.
v
FEECO

23. Want to learn more?
Download our
Gypsum Processing
E-book.
Gypsum Processing E-book
Processing Techniques
Challenges
Material Characteristics
Maintenance
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