Twin Screw Presses for fish meal production

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• Twin Screw Presses



• Single Screw Presses

For fishmeal and rendering (meat and bone)

TWIN SCREW PRESS	SINGLE SCREW PRESS

There are two types of
presses 

Twin Screw Presses: 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 last 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 refurbish	Twin screw press after refurbished

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. Cheaper
and easier to maintenance.

Screw press type TP 32-1, installed at  "VINH HOAN CORP." in Vietnam.	Screw press type TP 32-1, installed at Taybat Feed & Poultry" in Yemen.	Screw press type TP 32-1, installed at "Kingfisher" in Thailand.

ASTW have redesigned the
single screw presses to perform as good as the twin screw
presses.The advantage of the single screw presses is the simple
design and easy maintenance, and therefore low price. The ASTW
Single screw presses have a very strong and sturdy design for long
lifetime.

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.

Sizes of presses for fish meal production:

All presses have a mild steel design and come with a
variable speed gear motor controlled by a frequency inverter
(included).  (Stainless screws as option for even longer
lifetime) Operating capacity should be about 50 - 75% of
max.capacity.

FISHMEAL :  Single Screw Presses

FISHMEAL AND RENDERING

Long type and short type (rendering)



Twin Screw Presses: