How to extract starch from sweet potato ?

The how to extract starch from sweet potato takes sweet potato roots as raw material to produce sweet potato starch that meets the market requirements. The whole process of how to extract starch from sweet potato 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.

How to extract starch from sweet potato

Unit One: raw material transportation, cleaning and washing
The fresh sweet potato roots piled up in the stockyard is collected through the ground, and transported by a belt conveyor to the cleaning and washing machine. For how to extract starch from sweet potato, 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 sweet potato washing machine. 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 how to extract starch from sweet potato 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 how to extract starch from sweet potato, 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.

Sweet potato crushing 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 how to extract starch from sweet potato. 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,how to extract starch from sweet potato usually use multi-stage cyclone for sweet potato starch refining.

Unit Six: Starch milk dewatering
For how to extract starch from sweet potato, this sweet potato starch machine is used for decrease moisture content of starch to meet the requirement of subsequent drying process. A more elaborate type siphon peeler centrifuge is 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.

Sweet potato starch drying machine

Unit Seven: sweet potato starch drying
After dewatering, the water content in starch is still high so it need to be dried in how to extract starch from sweet potato. 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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