Page 11 - mobile Workbook-chapter 2
P. 11
where UC - uniformity coefficient
D60 - particle (sieve) size where 60% of the particles are smaller than that size
D10 - particle (sieve) size where 10% of the particles are smaller than that size
Example 2-6
A mixture of nonspherical waste particles are uniformly sized as follows: l = 4 units; w = 1.2 units,
and h = 1.5 units. Using the five equations provided above, calculate the particle diameter D.
What is the range of variation in the calculated values?
Answer
Example 2-7
Given the data for the following waste sizes:
Components Sieve size (mm)
Particle diameter (mm) 100 75 50 25 5
Weight of fraction (kg) 2 6 12 4 4
Number of particles 225 310 500 2000 5750
Calculate the arithmetic mean, the geometric mean and the weighted mean.
Answer
Page 11
