How to make sweet potato starch?

Sweet potato starch processing is a physical separation process, which separate the starch from the fiber, protein and other impurities. But how to make sweet potato starch? The sweet potato starch production line mainly includes the following part:
sweet potato choosing-cleaning-washing-cutting and crushing-separating-concentration and refining-dewatering-drying-packing

Sweet potato starch production line

1.Sweet potato cleaning part
The machine used for cleaning for how to make sweet potato starch is dry sieve which can effectively remove the soil, sand and other impurities in the sweet potatoes.

2.Sweet potato washing part
The purpose of this process is to wash the sediment in the outer cortex of sweet potatoes. And the used machine for how to make sweet potato starch is rotary washing machine. By adopting the countercurrent principle, thus the material can be washed thorough.

3.Crushing part
After washing, the broken pieces goes into the rasping machine. The extensively used crushing machine is rasper. As an important machine for how to make sweet potato starch, DOING rasper adopts Sweden SKF and Germany Optibelt technology which offers high crushing efficiency and longer service life.

Starch separating machine

4.Separating part
After crushing, the sweet potato slurry includes many fiber, protein, cell sap and other impurities. They need to be separated from starch for how to make sweet potato starch. And in this process, we need centrifuge sieve and fine fiber sieve. The centrifuge is used to separate the fiber and starch by using the high speed centrifugal force.

5.Concentraction and refining part
After a series of separating process, the fiber is almost removed. Then it is concentration and refining process. Hydrocyclone station is the mainly used machine for how to make sweet potato starch. The function of hydrocyclone station is to remove the fine fibers, protein and cell sap out of starch milk so as to achieve the purpose of concentration and refining.

6.Dewatering part
Even after the concentration, the water content in the starch milk in still high. The vacuum filter is used for the dehydration of the starch milk. The vacuum filter is a continuous running machine for how to make sweet potato starch to separate the solid from liquid. After the dewatering process, the water content of the starch should below 40%.

Starch drying machine

7.Drying part
The dewatered starch need to be dried to meet the standard starch. This machine for how to make sweet potato starch is called flash dryer. The flash air utilizes the high speed hot air to dry the starch which is complete in seconds. DOING flash dryer has the advantages of fast drying speed and high efficiency.

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potato starch processing machine