Potato starch manufacturing process

Potato starch manufacturing process adopts the wet processing technology of starch production, and no additives are added in the whole production process. As a professional complete set equipment manufacturer, the whole potato starch processing line has the features with matured technology, advanced equipment, scientific configuration and reasonable technology.

The potato starch manufacturing process is designed in the folowing steps:
Potato choosing and weighting-cleaning and washing-crushing-separating and desanding-concentrating and refining-dewatering-drying and packing
1. Raw material receiving stage
The raw material receiving unit is the first step in potato starch manufacturing process. The main purpose of this unit is to store potatoes in the raw material storage pool.
In the process of unloading potatoes in potato starch production line, it is best to ensure the integrity of potatoes. Broken potatoes are easy to rot, and rotten potatoes will infect other potatoes. The quality of potato has a great influence on starch quality. Potatoes should not be stored for more than half a month. The longer the potato is stored, the more detrimental it is to starch production.

2.potato crushing stage
After cleaning and washing in the potato starch manufacturing process, the potato will be crushed. Through the screw feeder, the potato goes into the rasper-an efficient crushing machine and being crushed into potato slurry. Due to the crushing efficiency (the percentage of free starch available) is critical to the overall system rate, a special design has been made for the rasper to achieve the highest possible photo crushing efficiency.

3.Sepateting stage
The crushed photo contains fiber, protein and other impurities, therefore it need to separate the starch from the impurities in potato starch manufacturing process. Centrifuge sieve is mainly used potato starch processing machine to separate the fiber and starch slurry. The slurry separation is also an important process in starch production which determines the yield of starch. Therefore this process need to be repeat several times to improve the potato starch content.
4.The separating and desanding stage
The separating process is mainly to separat the fiber from the starch.In this process in potato starch manufacturing process, the used machine are centrifuge sieve and fine fiber sieve.This is another important procedure which determines the starch yield. So in order to reduce the loss of the starch, the separating process can be repeated for four times. But the separating procss can not remove the sand in the slurry.The high sand content in potato starch will result in poor taste and bad quality of starch.Therefore the desanding process is also important and necessary.

5. Concentration and refining stage
The starch milk from the first stage centrifugal screen enters the hydrocyclone station, and the process water is pumped from the other end of the cyclone station to wash the starch countercurrent. The hydrocyclone station can be divided into three parts in potato starch manufacturing process: the first starch milk goes to the concentration cyclone station for concentrating, then the concentrated starch milk goes into the backwashing unit, while the overflow of cell SAP enters into recycling cyclone station for recycling of contained starch. Thus the concentrating, washing and refining process of the potato starch are completed.
6.Drying and packing stage
After dewatering of potato starch manufacturing process, the starch cake is dried in the flash dryer. The wet starch is heated by the hot wind and the water evaporates. After drying, starch is separated from air in a set of cyclone separators. Then the wet air leaves the cyclone separator and is discharged into the atmosphere by the ventilator. While the collected starch is transported by the screw conveyor to the packing unit. And the finished potato starch will be packed for storage.

Doing Company is a professional potato starch processing machinery manufacturer, welcome to contact our engineer for potato starch manufacturing process and visit our factory.


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