Process for recovering meal and fat from animal raw materials

In the recovery of meal and fat from an animal raw material, the process comprising the steps of boiling said raw material, subjecting said material, directly after the boiling step, to a first centrifugal separation in a centrifugal separator having a rotating conveyor screw and three separate outlets including a first outlet through which a liquid fat phase is discharged, a second outlet through which stick-water is discharged, and a third outlet through which a sludge phase is discharged, subjecting said sludge phase and stick-water to a mixing operation in a mixer to form an intimate mixture of said sludge phase and stick-water, and then removing sludge from said mixture by subjecting said mixture to a second centrifugal separation.