Grade Efficiency Calculation; FPT Ch14 Q1

Worked solution for Question 1, Chapter 14 (available as free download at www.particles....) in Fundamentals of Particle Technology. The determination of the grade efficiency curve, and separation size, for a classifier. This is a device that splits the solids flowing in to it between the 'fine cut' and the 'coarse cut' from the classifier. By convention, we define grade efficiency in these circumstances as the amount entering the fine cut. So, we need to deduce the masses in each size range (grade) and then compare the mass in the fine cut to the total mass entering the classifier.