Register to reply

Particle Size Distribution

by squalenepo
Tags: frequency, particle size, percentage
Share this thread:
squalenepo
#1
Apr17-14, 01:13 AM
P: 3
What is the relationship between the Frequency Distribution, Cumulative Distribution and Particle Size?
Phys.Org News Partner Engineering news on Phys.org
Greater safety and security at Europe's train stations
Fingerprints for freight items
On the way to a safe and secure smart home
Baluncore
#2
Apr20-14, 02:50 AM
Sci Advisor
Thanks
P: 1,923
Frequency distribution and cumulative distribution are statistical concepts.
You have a sample of particles that range from a minimum to a maximum size.

You perform a sieve analysis so as to sort or classify them into size ranges.
See; http://en.wikipedia.org/wiki/Sieve_analysis

You then weigh the particles in each class, (size range), and record that data.
By converting the weight falling in each size class to a percentage of the total you eliminate sample size variation.

If you tabulate or plot that data as a bar graph against size class you will have a frequency distribution. Different grinding or transport mechanisms have characteristically different frequency distributions. The comparison of graphed frequency distributions is quick and easy.

If you then compute a running total over the frequency distribution data, you will generate a cumulative frequency distribution, it starts at zero and finally reaches 100%. From that you can quickly identify what proportion of the mass of particles is above or below a particular size.


Register to reply

Related Discussions
Size distribution statistics Atomic, Solid State, Comp. Physics 0
Particle Size Distribution Measurement General Physics 8
Particle size distribution/histogram errors. General Physics 0
XRD data: particle size, cell size etc Atomic, Solid State, Comp. Physics 4
Particle Size VS Atom Size General Physics 5