CHEMICAL PROCESSING
CHAPTER 4 WORKSHEET
The notes for this Chapter have been updated. Use them to answer questions 1, 3 & 5.
The following link will be useful for Q2 & 4: http://en.wikipedia.org/wiki/Unit_operation
Particle size reduction
1.
How do the following properties of solids affect the way that their particle size can be
reduced?
(a) particle shape
(b) particle size distribution
(c) structure
(d) explosiveness
(e) moisture content
(f) hardness
2.
Briefly describe the operation of THREE types of equipment that are commonly used
industrially to reduce particle size.
Mixing of solids
3.
How do the following properties of solids affect the way that they can be mixed?
(a) particle shape
(b) particle size distribution
(c) friability
(d) bulk density
(e) particle density
(f) moisture content
(g) static electricity
4.
Briefly describe the operation of THREE types of equipment that are commonly used
industrially to mix solids.
5.
How would you deal with a mixture of solids where:
(a) some components are less than 1% of the overall mixture
(b) there are many components