For a flotation operation, such as that in Fig. $89,$ the

net feed is $1000$ tons $\frac{?}{24}$ hr to the rougher. From the follow$-$

ing data, compute the capacity and number of flotation cells

in each unit and the power consumption.

$($a$)$ Use Denver No$,24$ cells whose cubic capacity is $50$

cu ft and whose power consumption is $4\mathrm{.}2hp$ per cell.

$($b$)$ Use Air$-$Lift cells whose cross$-$sectional area up to

froth overflow is $9\mathrm{.}85sqft$ and compute the lengths of the

troughs and air required at $3$ psi. Fig. $89.$ Simple flow diagram showing separation by flotation

using rougher, scavenger, and cleaner $($or finisher$)$ cells.