Q326
In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres; ρ = apparent solid density, kg/m3; L = flow rate of dry solids, kg/see.m2 drier cross-section; H = hold up of solid.)
A.
Answer
B.
C.
D.
Answer: Option A
Solution
Answer: Option A
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