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Sweet potato starch processing plant

January 18, 2019 by cassava processing machine  

The sweet potato starch processing plant takes sweet potato roots as raw material to produce sweet potato starch that meets the market requirements. The whole sweet potato starch processing plant includes seven units: raw material transportation, cleaning and washing unit, sweet potato grinding unit, starch slurry separation unit, starch slurry desanding, concentration and refining unit, starch milk dewatering unit, starch drying unit and the final starch sieving and packing unit.

cassava starch machine

sweet potato starch processing plant

Unit One: raw material transportation, cleaning and washing
The fresh sweet potato roots piled up in the stockyard in sweet potato starch processing plant is collected through the ground, and transported by a belt conveyor to the cleaning and washing machine. In sweet potato starch processing plant, the stone, weed, sand and other debris therein are initially removed by the collision and friction of the cleaning machine. Then the sweet potato enters the washing unit. After the two cleaning and washing process, the mixed sand and other debris on the surface of the sweet potato roots have been basically removed, and the washed sweet potato enters the grinding unit.

Unit Two: Rasper for sweet potato crushing
Rasper is an important machine in sweet potato starch processing plant which determine the starch yield. Therefore the sweet potato starch processing machinery manufacturer introduce the international advanced technology to design and manufacture this machine. DOING rasper is such an achievement based on advanced EU technology and extraction rate up to 95%.

Unit Three: Starch slurry separating
In sweet potato starch processing plant, the purpose of this step is to separate fiber out of starch slurry. Centrifuge sieve and fine fiber sieve are separately used for removing fiber and fine fibers in sweet potato starch production line.

dry sieve (1)

Sweet potato cleaning machine

Unit Four: Sand removal
Desander cyclone is a sweet potato starch machine used for removing sand content in starch slurry so as to improve the taste of sweet potato starch in sweet potato starch processing plant. It has such advantages as small ground occupation, less investment, easy installation, handy maintenance and high desanding effect.

Unit Five: Starch concentration and refining
Hydrocyclone station uses: to concentrate and refine and recycle starch. To achieve multiple functions such as concentration, recovery, washing and protein separation,sweet potato starch processing plant usually use multi-stage cyclone for sweet potato starch refining.

Unit Six: Starch milk dewatering
In sweet potato starch processing plant, this unit is used for decrease moisture content of starch to meet the requirement of subsequent drying process. A more elaborate type siphon peeler centrifuge is a sweet potato starch machine equipped with a backwashing device (optional) to flush the outside of the centrifuge drum and the inside of the casing to achieve process cleanliness requirements.

centrifuge sieve (3)

Sweet potato starch separating machine

Unit Seven: sweet potato starch drying
After dewatering, the water content in starch is still high so it need to be dried in sweet potato starch processing plant. The sweet potato starch machine used in this process is flash dryer. The flash dryer adopts the negative pressure drying system which can effectively reduces the loss of the starch and meanwhile purifies the working environment. The high speed hot air dry the starch just in 2-3 seconds which has an significant energy saving effect.

 

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