starch centrifuge separator

Starch Separation and washing


The A +-Starch milk from gluten extraction is fed to a centrifugal screen installation

where bran particles and fibres are remo- ved. These are mixed with the A --Starch.

The starch milk is collected in a buffer tank and then concentrated in a 3-phase

nozzle separator equipped with washing devices. While the clarified overflow

from the separator is used as process water the middle phase containing starch

and most of the suspended impurities is fed to starch recovery. Finally the concen- trated

starch milk is washed with fresh water in a multi-stage hydrocyclone system

in counter-current operation. In order to improve the starch yield even the small

granule starch can be recovered. Therefore the A --Starch coming from gluten extrac-tion

is subjected to fine fibre removal by means of centrifugal screening. The filtrate as well as the middle phase from prime sep-aration is fed to a buffer tank prior to the

recuperation section. For starch recupera-tion a 3-phase separator is being used. The

recovered A +-Starch concentrate is recycled priortoprime separation. TheA--Starch phase

(middle phase) is pumped to the A --Starch concentration section. The overflow of the

separator can be used as process water. A --starch

Concentration and Process Water System.