Extraction of starch from sweet potato procedure

Doing Company is a professional sweet potato starch processing machine manufacturer who has years of experience of designing and manufacturing equipment for large, medium and small size plant.

The following is the introduction of our production technology for extraction of starch from sweet potato procedure
Cleaning and washing-cutting and rasping-separating-concentration and refining-dehydrating-drying and packing

Extraction of starch from sweet potato

Step 1: Cleaning and washing
The widely used sweet potato cleaning equipment is dry sieve for extraction of starch from sweet potato. It mainly removes the sand, weed, small stones and other debris of sweet potato. After cleaning, materials are transported into sweet potato washing unit. Rotary washing machine is a widely used washing equipment. It can effectively avoid the breaking of sweet potatoes in the washing process, so the starch in sweet potatoes can be retained to the maximum extent and the utilization rate is higher.

Step 2.Cutting and crushing
Due to the size of the sweet potato, it need to be cut into small pieces before crushing so that the crushing process can be easier. Crushing is a vital process in extraction of starch from sweet potato process because it determines the extraction rate of starch. Doing Company independent research and development of high efficient crusher which can obtain higher percentage of free starch. After crushing, the sweet potato is crushed into starch slurry.

Sweet potato cutting and crushing machine

Step 3. Starch and residue separation
This section is mainly used for separating fibers in sweet ptoato starch processing plant. The mainly used machine includes centrifuge sieve and fine fiber sieve. The centrifuge sieve is mainly used for removing fiber and fine fiber sieve is for further removing fine fiber.  This is also an important procedure of extraction of starch from sweet potato.

Step 4. Concentration and refining
The starch slurry from the desander unit is transferred to the multi-stage concentration and refining unit. In extraction of starch from sweet potato procedure, hydrocyclone station is mainly used for this process. The process water is pumped in from the other end of the hydrocyclone station to wash the starch in a countercurrent way. Usually a full process includes the concentration, recycling and refining of starch milk.

Sweet potato starch dewatering machine

Step 5. Starch milk dewatering
Vacuum filter is a extensively used dewatering machine which is mainly for reducing the water content of starch milk for extraction of starch from sweet potato. After dewatering, the water content in starch milk is 38%-40%. DOING vacuum filter can achieve continuous automatic production, which ensures a cleaning production environment.

Step 6. Drying and packing
Then it is the drying and packing process. In extraction of starch from sweet potato process, factory usually use flash dryer for drying of starch. The high speed hot air fully mixed with wet starch, by heat exchanging, the wet starch is dried. The whole drying process is completed in an instant. After that, the collected starch is packed into 25kg or 50kg finished products.

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Contact: Ms Elina
Email: market@doinggroup.com
Tel: 0086 371 5677 1822
Whatsapp/Phone:+86 135 2661 5783
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