A slurry is to be pumped at a rate of 200 tph at 45% solids by weight. The SG of the ore is 3.2. A new mineral process engineer suggests the use of a pipe of 150 mm inside diameter. Do the necessary calculations to check her choice. (10)

Durands equation, VL = FL* [(2*g*D*(S-SL)/SL)]^0.5 where these variables take the meaning given in your notes (S = SG of solids and SL = SG of liquids). Assume FL = 0.77