Extraction of starch from sweet potato processing line

Sweet potato starch is one of the main products of sweet potato processing. The extraction of starch from sweet potato process can automatically complete the whole process of cleaning, washing, crushing, rasping, separation, concentration and refinement, dehydration, drying and packaging of sweet potato.

Sweet potato & sweet potato starch 

1. Cleaning and washing: For extraction of starch from sweet potato, the first step is cleaning. Cleaning process is for removing the stone, seed and dirt of sweet potato. Dry sieve is mainly used for this purpose in sweet potato starch production line. Then the potato need to be washed in rotary washing machine. After the two process, the sweet potato is completely and thoroughly washed.

2.Cutting and crushing: After cleaning and washing process, the sweet potato is converted to the sweet potato starch processing machine for cutting. The main purpose of cutting sweet potato is to make the crushing easier for extraction of starch from sweet potato. By cutting the sweet potato into small pieces, it not only make the crushing more thoroughly but also reduce the possible damage caused to the rasper machine. After cutting, the broken pieces goes into the crushing machine. The extensively used crushing machine is rasper. As an important sweet potato starch processing machine, DOING rasper adopts Sweden SKF and Germany Optibelt technology which offers high crushing efficiency and longer service life.

3. Starch slurry screening: starch slurry is also an important procedure for extraction of starch from sweet potato. By sieving, the purpose of separating and purifying starch is achieved. To achieve better screening effect, multiple screening or countercurrent washing processes are adopted throughout the process.

Sweet potato crushing machine

4. Desanding: After the separating section, the starch slurry still contains sand which need to be removed by desander machine. The function of desander in extraction of starch from sweet potato is to fully remove the fine impurities in starch so as to ensure the taste and quality of starch.

5. Concentration and refining: After the separation section, the sweet potato slurry need to be further refined. This process mainly removes the protein, fine fiber and cell sap. In this process of extraction of starch from sweet potato, the mainly used machine is hydrocyclone station. A full hydrocyclone technology includes the concentration, refining and recycling.

6. Dehydrating: The dehydrating is used to reduce the water content of cassava milk so that is can be dried. Vacuum filter take use of negative pressure to achieve the purpose of dehydrating for extraction of starch from sweet potato. The starch milk is sucked onto the drum, and the filtrate is sucked into the filtrate separation tank and pumped away by the filtrate pump. The filter cake is scraped down by the scraper and transported into the feed hopper of the starch drying machine with food-grade conveyor belt.

Sweet potato starch dewatering machine

7.Drying: The dewatered starch need to be dried to meet the standard starch for extraction of starch from sweet potato. This sweet potato starch machine 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, high efficiency, high equipment production capacity and low equipment cost.

The above is the complete introduction of extraction of starch from sweet potato of Doing Company. The sweet potato starch production line has the characteristics of large processing capacity and short production cycle. The raw material takes only less than thirty minutes from cleaning to finished product, effectively avoiding the pollution of dust and microorganisms, improving product production efficiency and product quality. Should you have any further question about the new technology, welcome to contact us.

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Whatsapp/Phone:+86 135 2661 5783
Email: market@doinggroup.com
Tel: 0086 371 5677 1822
View more:
sweet potato starch machine
sweet potato starch processing plant
sweet potato starch production in Nigeria
how to make starch from sweet potato

Sweet potato starch processing plant

The following is the introduction of DOING production process in sweet potato starch processing plant
Cleaning and washing-cutting and rasping-separating-concentration and refining-dehydrating-drying and packing

Sweet potato starch processing plant 

1. Cleaning and washing section: The sweet potato is firstly be cleaned in dry sieve to remove the sand, weed and other dirty materials. The dry sieve is a high effective sweet potato starch machine which will not damage the raw material. And the washed sweet potato is transported into rotary washing machine to further wash the attached impurities, such as soil and sand in sweet potato starch processing plant. This washing machine adopts countercurrent washing principle which can ensure the raw material be washed cleanly and thoroughly.

2. Cutting and crushing section: After cleaning and washing process, the sweet potato is converted to the sweet potato starch processing machine for cutting. The main purpose of cutting sweet potato is to make the crushing easier. By cutting the sweet potato into small pieces, it not only make the crushing more thoroughly but also reduce the possible damage caused to the rasper machine. After cutting, the broken pieces goes into the crushing machine. The extensively used crushing machine is rasper in sweet potato starch processing plant.

3. Starch slurry screening section: Starch slurry is also an important procedure in sweet potato starch processing plant. By sieving, the purpose of separating and purifying starch is achieved. To achieve better screening effect, multiple screening or countercurrent washing processes are adopted throughout the process.

Sweet potato crushing machine 

4. Concentration and refining section: The function of this process is to remove insoluble protein and residual soluble protein and other impurities from the starch slurry, thereby achieving the purpose of washing, refining and concentrating the starch milk. At present, the hydrocyclone station is commonly used for washing, refining and concentrating in sweet potato starch processing plant. According to the different specific gravity of water, starch and yellow pulp protein, this machine can effectively remove the impurities.

5. Dewatering section: The moisture content of the starch milk coming out from the cyclone station is too large to be directly dried in sweet potato starch processing plant. Therefore, the starch milk should be dehydrated first, so that the moisture content of the starch is about 40%. The starch milk is pumped into the vacuum filter tank, and the vacuum pump forms a negative pressure in the vacuum drum. When the starch milk is in contact with the vacuum drum, the starch is sucked on the drum surface and  is scraped off by a scraper. While the filtrate is sucked into the filtrate separation tank, pumped away by the filtrate pump.

Sweet potato starch drying machine 

6. Drying and packing section: The final process in sweet potato starch processing plant is the drying and packing. The dehydrated starch cake is transported to the feed inlet of the flash dryer through the conveyor belt and enters the hoist through the feeder. The wet starch is heated by the high speed hot air and the water is evaporated. Finally, the dried starch is then transported to semi-automatic packaging machine and packaged into finished products.



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


Related:
sweet potato starch making machine
sweet potato starch production in Nigeria
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Sweet potato starch making machine

Sweet potato starch is one of the main products of sweet potato processing. Nowadays, the extraction of starch from sweet potato is normally completed by sweet potato starch making machine. Doing Company is a professional starch deeply processing equipment manufacturer, the sweet potato starch making machine can automatically complete the whole process of cleaning, washing, crushing, rasping, separation, concentration and refinement, dehydration, drying and packaging of sweet potato.

Click here to see VIDEO for sweet potato starch processing plant operation

Sweet potato starch making machine 

1. Cleaning and washing machine: For extraction of starch from sweet potato procedure, the first sweet potato starch making machine is for cleaning. Cleaning process is for removing the stone, seed and dirt of sweet potato. Dry sieve is mainly used for this purpose. Then the potato need to be washed in rotary washing machine. After the two process, the sweet potato is completely and thoroughly washed.

2.Cutting and crushing machine: After cleaning and washing process, the sweet potato is converted to sweet potato starch making machine for cutting. The main purpose of cutting sweet potato is to make the crushing easier. By cutting the sweet potato into small pieces, it not only make the crushing more thoroughly but also reduce the possible damage caused to the rasper machine. After cutting, the broken pieces goes into the crushing machine. The extensively used crushing machine is rasper. As an important sweet potato starch processing machine, DOING rasper adopts Sweden SKF and Germany Optibelt technology which offers high crushing efficiency and longer service life.

3. Separation machine: This section is mainly used for separating fiber. The mainly used sweet potato starch making 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.

Sweet potato starch separating machine 

4. Concentration and refining machine: The starch slurry from the desander unit is transferred to the multi-stage concentration and refining unit. In sweet potato starch processing plant, hydrocyclone station is mainly used sweet potato starch making machine 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.

5.Dewatering machine: 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 sweet potato starch making machine which using the moving filter cloth as the filter medium and using the negative pressure and gravity provided to separate the solid from liquid. After the dewatering process, the water content of the starch should below 40%.

6.Drying and packing machine: The dehydrated starch is then transported into flash dryer for drying. The flash dryer is a sweet potato starch making machine takes use of negative pressure principle which effectively controls the loss of the starch and ensures cleaning operation environment.

Sweet potato starch drying machine

The sweet potato starch making machine produced by Doing Company can complete the whole process from the input of raw materials to the production of finished starch. It can also be customized according to the actual situation and special requirements of users. We provide large, medium and small processing lines for extraction of starch from sweet potato with various configurations to meet the needs of different customer groups.


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Email: market@doinggroup.com                                          
Tel: 0086 371 5677 1822                                                
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cassava starch machine

China sweet potato starch machine for sale

The following is the introduction of our production technology and main sweet potato starch machine for sweet potato starch processing plant
Cleaning and washing-cutting and rasping-separating-concentration and refining-dehydrating-drying and packing

Sweet potato starch machine

1. Cleaning and washing machineThe sweet potato is firstly be cleaned in dry sieve to remove the sand, weed and other dirty materials for how to make sweet potato starch. The dry sieve is a high effective sweet potato starch machine which will not damage the raw material. And the washed sweet potato is transported into rotary washing machine to further wash the attached impurities, such as soil and sand. This washing machine adopts countercurrent washing principle which can ensure the raw material be washed cleanly and thoroughly.

2. Rasping machine
This sweet potato starch machine is the key machine in the extraction of starch from sweet potato. In this process, the sweet potato is crushed into slurry. And the bound starch in sweet potato turns to free starch. And the extraction rate of sweet potato determines the final starch yield. DOING rasper is an advanced rasping machine with high rasping rate and high extraction rate.

 Sweet potato rasping machine

3. Separating and desanding machine
After crushing, the fiber, protein, cell sap and other materials are released from cell wall. Therefore the separating is needed to separate starch from fiber and other impurities. Separating process mainly remove fiber from starch. And the mainly used sweet potato starch machine contains centrifuge sieve and fine fiber sieve which remove fiber and small fiber respectively. After that, the sweet potato starch slurry is pumped by a screw pump into a desander to remove sand particles.

4. Concentraction and refining machine
After a series of separating process, the fiber is almost removed. Then it is concentration and refining process. Hydrocyclone station is the mainly used sweet potato starch machine in these process. 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. Hydrocyclone station is composed of a series of hydrocyclone which can remove the impurities better. which ensures the final product meet the standard.

Sweet potato starch dewatering machine  

5. Dehydration machine
In the process of extraction of starch from sweet potato, the purpose of dehydration is to reduce the water content of sweet potato milk. And vacuum filter is mainly used sweet potato starch machine for this process. After dehydration by DOING vacuum filter, the moisture content of wet starch is around 38%.

6. Drying and packing machine
 The next sweet potato starch machine in sweet potato starch production plant is flash dryer. The dehydrated starch cake is transported to the feed inlet of the flash dryer through the conveyor belt and enters the hoist through the feeder. The wet starch is heated by the high speed hot air and the water is evaporated. Finally, the dried starch is then transported to semi-automatic packaging machine and packaged into finished products.


Click here to give you the best price
Whatsapp/Phone:+86 135 2661 5783

Email: market@doinggroup.com
Tel: 0086 371 5677 1822

Related:
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