Subtopic: Disc bowl cream separator separation zone
Question Statement:
In a continuous disc-bowl centrifugal cream separator rotating at $5000-8000\text{ rpm}$:
Options:
(A) Dense skim milk is forced outward to the bowl periphery, while lighter fat globules travel inward along the conical disc surfaces toward the central cream outlet
(B) Fat globules are forced outward to the bowl periphery while skim milk remains in the center
(C) Sediment and sludge accumulate in the central shaft
(D) Separation occurs without centrifugal force
Answer Key:
A
Step-by-Step Solution & Explanation
Under intense centrifugal acceleration ($5000-7000\text{ g}$), the denser aqueous phase (skim milk, $\rho \approx 1035\text{ kg/m}^3$) is thrown outward to the periphery, while the lighter fat globules ($\rho \approx 930\text{ kg/m}^3$) migrate inward along the conical disc stack toward the central cream core.