In the Rod Mill-Ball Mill grinding circuit shown below, the Rod Mill is fed at the rate of 100 tonnes per h of dry solids (density 2.75 tonnes/ m3 ). The cyclone feed contains 55% solids by weight, and size analyses on the rod mill discharge, ball mill discharge, and cyclone feed indicated the following particle size data: a) Considering that in a grinding circuit particle size become a variable for mass balancing just like metal assays in a mineral separation circuit, calculate the circulating load of solids in this grinding circuits (i.e., mass of dry solids) in tonnes/ h. b) Based on your answer to section (a), calculate the volumetric flowrate of cyclone feed in m3/h c) What is the slurry density expected from cyclone underflow if the cyclone overflow density is 35% solids (wt.)