Cassava starch is mainly used as raw material in industrial sectors such as food, sugar, medicine, feed, textile, paper making, and chemical industries.
The cassava starch production process is a physical separation process, which is to separate the starch in the cassava raw material from other substances such as cellulose, white, and inorganic substances.Processing cassava into starch requires following steps: unload cassava, remove impurities, cleaning, crushing, starch screening, sand removal, concentration and separation,dehydration, drying, sifting, package.
When purchasing raw materials, sampling inspection should be carried out in accordance with cassava standards. The cassava is weighed by a weighbridge and stored in the stockyard, and then loaded using forklifts.
The cassava in the factory yard is sent to the silo with a forklift, and fed into the belt conveyor through the feeding device, and then enters the dry cleaning screen to screen and clean the stones, soil and other impurities in the cassava. After entering the paddle cleaning machine, the cassava is thoroughly cleaned and also plays the role of peeling.
The washed cassava is transported to the cassava chopper for chopping, and the cassava pieces are sent to the rasp grinder, where they are filed into a very fine slurry.
The coarse starch slurry from the crusher is transported to the screening unit. The screening unit is integrated and includes four conical centrifugal screens, slag pumps, and slurry pumps. When the crude pulp is screened through the three-stage extraction screen, it is washed by the process water from the cyclone recovery unit in a counter-current manner, thereby maximizing the separation of starch.
The starch milk temporarily stored in the rough slurry tank is pumped into the desander to remove sand and soil that may remain in the starch slurry.
The crude starch milk after passing through the rotating filter enters the disc separator to separate the fine residue (or enters the first-level concentration cyclone group). The cell liquid separated from the top flow of the separator enters the sewage treatment station as wastewater, while the bottom flow The separated starch milk enters the starch milk tank for temporary storage, and then is transported to the cyclone group through a pump for refining and washing.
The clearer slurry (with starch content ≤0.3g/L) separated in the first stage of the cyclone group is transported to the common pipe of the centrifugal screen group as process water for washing starch. The starch is recovered and washed, and the fiber fines are separated.
The refined starch milk is transported to the siphon scraper centrifuge, which dehydrates the starch milk to wet starch with a water content of about 35%, and then sends it to the drying section.
The wet starch with a water content of 38-40% first enters the buffer box of the drying unit, and then enters the elevator through the speed-adjustable feeding auger. The high-speed rotating elevator impeller sends the wet starch into the drying air duct and mixes it with the filtered and heated air. During the drying process, through computer comprehensive control of the inlet air temperature and feed speed, the product moisture is automatically controlled within the required range. The starch separated from the shakron is discharged through the air-closed air-closed device and then enters the conveying auger, and then is sent to the starch screen.
The dried starch needs to be further screened to remove possible impurities and reach the fineness of the corresponding national standards.
The packaging of the product can be in different forms according to the needs of the user, such as the size of the packaging bag, etc., generally 25kg/bag.
The finished products are continuously transported by the belt conveyor into the finished product warehouse.
The standard cassava starch production scale is generally: 6TPH, 10TPH, 12TPH, 20 TPH, 25TPH, 35TPH, 50TPH, 75TPH and 100TPH. Henan Huatai also supply customized cassava starch solution according to detail needs.
Huatai Starch Machinery is a large-scale starch project contractor, which can undertake a full set of large-scale starch production lines, including potato starch, cassava starch, sweet potato starch, corn starch, wheat starch, etc.