The fluidization wash water was prepared in a 700 L tank and
dosed with MIBC to the same concentration as the feed. The tailings
discharge rate was controlled using two pumps; one of high
volumetric capacity for removal of the majority of the underflow,
the other, a low rate pump to provide finer control over the
volumetric split between the overflow and underflow to obtain
steady state. The overflow product stream was open to atmosphere
and discharged at a rate controlled by the tailings pumps;increasing the tailings pump decreased the overflow rate. The gasrate to the system was controlled using a rotameter.