Description
Processing capacity :
10 tons/day Cassava starch,60 tons/day Cassava starch
The fresh harvested roots are weighted and storages on a clean concrete square. From there they are dumped into rotary cleaning drums for pre-cleaning/dry cleaning of the roots. The roots coming from the cleaning drums are transported to the paddle washer/peeler. At inspection belt the roots are inspected on tails and remaining impurities such as timber and bones. After inspection the roots are transported to the rasping section.
The cleaned roots coming from the root washing section are fed into the chopper. The chopper chops the roots into coarse pieces which fall into the rasping-hopper and then they are dosed and distributed to the rasper.
The disintegrated roots are pumped into the desanding units where sand and other coarse particles are removed. The de-sanded root-slurry is discharged to the extraction section.
One extraction/pulp-dewatering line consists of one three-stage extraction unit and one pulp-dewatering sieve.The starch milk is discharged to the crude starch milk tank.The fibers from an extraction unit are fed to a pulp-dewatering unit where the fibers are dewatered.
Before the crude starch milk is fed to the separator for concentration, a second degritting is executed to remove the very fine sand (red clay) from the starch milk.
The crude starch milk is fed into the two phase nozzle separator via the rotary brush strainer to protect the nozzles of the separator for coarse impurities. The crude starch milk is concentrated to a density of 18 - 19and continuously discharged through the nozzles. The concentrated starch milk is directly fed into the washing unit.
The washing unit is a multi stage cyclone unit consists of 8 washing stages. The starch milk is washed counter currently in order to remove the remaining fibers, protein and other impurities.
The dewatering is done by a peeler centrifuge. The dewatered starch cake is discharged on a belt conveyor which t