Potato starch manufacturing process


Potato starch manufacturing process in Doing Company adopts the wet processing technology of starch production without any additives. The whole process features with matured technology, advanced equipment, scientific configuration and reasonable technology.

The process flow of potato starch manufacturing process is designed according to seven stages: cleaning, washing, grinding, separating, concentration and refining, dehydrating, drying and packing.
Potato starch manufacturing process 

1. Cleaning stage: Dry sieve is a widely used cassava cleaning machine whose main function is to remove the sand, soil, weed and other impurities from cassava in potato starch manufacturing process. This potato starch processing machine adopts multiple inner spirals design which achieve the transportation function during cleaning process. It can not only play the function of quantitative conveyance, but also control the size of material conveyance.

2. Washing stage: The washing process is carried out by paddle washing machine in potato starch manufacturing process. potato raw material is rolled along with the wall of the cylinder, and is sprayed, washed, bathed, mixed, and peeled with water as a medium.

3. Grinding 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 grinding machine and being crushed into potato slurry. Due to the grinding 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 grinding efficiency.
Potato grinding machine

4.Separating stage: The separating process in potato starch manufacturing process is mainly for the separation of fiber and the potato starch. The centrifuge sieve and fine fiber sieve are used in this process. The centrifuge sieve utilizes the high speed centrifugal force to separate fiber and starch. While the fine fiber sieve take use of low speed centrifuge to achieve the fiber-starch separation. Normally in order to achieve better separation effect, potato starch processing line adopts multi-stage centrifuge process.

5. Concentration and refining stage: In potato starch manufacturing process, hydrocyclone station is widely used for this process. The hydrocyclone station is composed of multistage cyclone in a certain way. According to the processing function of each stage cyclone in the cyclone station, different number of cyclone pipes and a feed pump need to be installed. The whole unit is independent in the process, compact in structure and convenient in installation.

6. Dehydrating stage: After concentration and refining process, the concentrated starch milk still contains a large amount of water, and thus must be dehydrated to facilitate drying. Unlike the tradition dehydrating method, the potato starch manufacturing process combines the peeler centrifuge and vacuum filter for dewatering. It is required that the wet starch has a low moisture content of 38% after dehydration in potato starch production plant.
Potato starch refining machine


7.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.



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