Presses for fish meal production Download File PDF

In OFP = Oily Fish Plants the raw fish must be properly cooked to 95 °C. before processing. The press with separate in solids “press cake” which goes to the fish meal drier and the liquids “press water” which goes to decanter and separated to separate fish oil, some meat sludge solids which goes to the drier and stick water which contains some dissolved proteins to be recovered in the drier or in combination with a WHE = Waste heat evaporator.

Single screw press type TP 41-1 (4 t/hr.) (Navico, Vietnam)	Twin screw press type BS-41 (8 t/hr.) (Kanpa International Sales, Pakistan)
There are two types of presses:   Twin screw press   - Twin Screw Presses has two counter rotating screws that prevent rotation of the raw material. Invented by Stord Bartz of Norway 50 years ago, this is the world known ultimate press for fish meal production and with a very sturdy design that often has a lifetime of 30 years or more. The “negative” side of the press is that it is has a complex (but very reliable) design that gives a relatively high price.
Twin screw press before refurbishing	Twin screw press after refurbishing
Single screw presses   - Work very well when the raw material is fresh and easily pressable, but these presses some times have the problem that the material “rotates” with the screw and does not move forward.
Single screw press type TP-41-1 (Kingfisher, Thailand)       Single screw press type TP-32-1 (Sardima, Costa Rica)

Single Screw Presses:
Type	Capacity raw material in tons input/hour
TP 24-1	1.2
TP 32-1	2.5
TP41-1	4.0
TP 49-1	7.0

Twin Screw Presses:
Type	Capacity raw material in tons input/hour
BS-41	8.0
BS-49	18.0