Process for the production of fodder and fat from animal raw materials

DETAILED DESCRIPTION We claim: 1.
In a process for the production of fodder and fat from animal raw material, such as slaughterhouse waste, which comprises the steps of: (a) heating said raw material to a temperature of from about 60.
degree.
to about 135.
degree.
C.
and separating the heated product into a solid material phase and a fluid phase, (b) separately drying said solid material phase and thereafter separating the dried product into solid fodder and fat, (c) separately evaporating said fluid phase, and (d) extracting fat by a procedure selected from (i) feeding the evaporated product of step (c) at least in part to said solid material phase of step (a) prior to carrying out step (b), and (ii) directly working up the evaporated product of step (c) into fat, the improvement which consists in utilising heat energy derived from gases emitted on drying said solid material phase when separately evaporating said fluid phase in step (c).
2.
The process of claim 1, wherein said fluid phase is evaporated by employing first heat energy derived from said gases emitted on drying said solid material phase in a first evaporation step and second heat energy supplied separately in a second evaporation step, third heat energy derived from gases emitted in said second evaporation step being combined with said first heat energy in performing said first evaporation step.
3.
A process for the production of meat and bone meal and fat from slaughterhouse waste consisting essentially of: (a) heating said waste to a temperature of from about 50.
degree.
to about 135.
degree.
C.
and separating the heated product by pressing into a solid material phase and a fluid phase, (b) separately drying said solid material phase and thereafter separating the dried product by pressing into solid meat and bone meal and fat, (c) separately evaporating said fluid phase, and (d) extracting fat from said evaporated fluid phase by one of (i) feeding the evaporated product of step (c) at least in part to said solid material phase of step (a) prior to carrying out step (b), and (ii) directly working up the evaporated product of step (c) into fat, whereby heat energy derived from gases emitted on drying said solid material phase is utilized when separately evaporating said fluid phase in step (c)