Problem3

A hydro cyclone produces two products i.e. underflow and overflow from the feed. The overflow is treated further for concentration of valuable mineral; whereas underflow is recirculated. In a hydro cyclone a slurry of density  is fed for separation. It produces underflow of slurry density  and overflow of slurry density  . Determine mass flow rate of feed to cyclone, when 3 liter sample of underflow takes 4s. Density of dry solid is . Calculate % solids in feed, underflow and overflow.

Solution

  equation 6 of lecture 11

 

 

 

Dilution ratio of feed, under flow and overflow can be calculated by equation 10 of lecture11. These dilution ratios arc 4.42, 1.97 and 21.97 respectively.

solid in UF

Where is volumetric

Mass flow rate of

Water balance on the cyclone gives  Ans.