How Produce Potato Starch?
The potato starch production process is basically the same as the process of making starch in the sweet potato, but the potato starch is simpler than the manual production. It is mainly composed of raw materials washing, grinding, sifting, separating protein, cleaning, drying and drying. General methods of production and the primary difference between modern production methods, is that the latter using disc centrifuge or liquid rotary separator instead of flow channel separation of impurities, make automation and continuous operation has more mass production.
Method of production:
1,Wash and grind: the potato washing process is done in the washing machine. Remove inclusions of mud, stone, stem leaf and adhesion in the potato mud on the surface of the impurities such as sand, water consumption is about 5 times as raw material, after washing, sent to the mill. There are two types of grinding machines used for grinding machine.
2,Sieve: after ground, the potato paste should be sieving. The traditional method is to use a flat shaker and the modern potato starch factory is a centrifugal sieve. To add water washing in the process of screening, screening the content of starch milk, pulp are on screen for the second screening, recycling of starch, the starch pulp are after cleaning can be used as feed.
3,Groove separation and cleaning: the starch milk from the division of the sieve is separated from the protein and other impurities in the slot and then cleaned in the cleaning tank. From the trough, the starch water is placed into the groove and the starch is recycled and the starch is obtained by the cleaning tank.
4,Dehydration drying: starch after cleaning, the moisture content is very high, must use the centrifuge dehydration, water cut into 45% wet starch, and the dry air drier to equilibrium moisture content of 20% dry starch.
