Problem
A floatation plant treats feed whose grade is  . The plant produces concentrate and tailings. The copper grade of concentrate is  and that of tailings is  . Calculate:
 recovery in concentrate
- Fraction of feed in concentrate
- Enrichment ratio
Let  and  is mass of tailing, f, c and t are grade in feed, concentrate and tailing respectively.
Material balance
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(1) |
 |
(2) |
By 1 and 2 we get
|
(3) |
 |
(4) |
By 3 and 4 we get.
|
(5) |
Plant recovery is copper recovery and by equation 5 it is  Ans.
Fraction of feed in  Ans
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