Cassava starch manufacturing process

Cassava starch manufacturing process is kind of physical process to extract starch from fresh cassava tubers, which consists of three main parts: cleaning section, processing section and drying section.

Cassava starch processing machine

The first step of cassava starch manufacturing process is cleaning section, in which dry sieve and paddle washing machine will be applied. Firstly sand, stones and other impurities attached on surface of cassava tubers are removed by dry sieve. Then paddle washing machine is used for complete cleaning. In the washing machine, cassava tubers comes out against water flow direction (countercurrent washing principle) , which makes high cleaning and can also remove some peels as well.

Cassava cleaning & washing

The second step of cassava starch manufacturing process is processing section, which is the most important and key part in starch production. After cassava tubers come out from dry sieve and paddle washing machine, they will be transferred into cutting machine and rasper machine. Cutting machine makes tubers into small pieces and then rasper machine crush them completely, break cell structure and makes starch out as much as possible. Rasper machine is the key equipment in cassava starch manufacturing process, which determines extraction rate and output of final starch.

Cassava crushing machine

After cassava tubers being crushed, the next step is to separate other contents (fiber, protein, etc) from starch. In separation parts of cassava starch manufacturing process, we will use centrifugal sieve, fine fiber sieve and hydrocyclone system. Firstly centrifugal sieve separate big fiber from starch slurry, and then fine fiber sieve will screen tiny fiber that still exists after centrifugal sieving. Above all are solid contents, after that we need to separate liquid protein and cells. Hydrocyclone system adopts the principle of centrifugal sedimentation to separate protein and other impurities by various gravity and centrifugal force. Hydrocyclone system has functions of refining, concentration and recovering of starch slurry.

Centrifugal sieve & fine fiber sieve

The third step of cassava starch manufacturing process is drying section. After all purifying and concentration process is finished, we will get pure starch slurry at certain density. To dry starch and get powder form, we need two procedures-dewatering and drying. Because special features of cassava starch granule, which is different from other potato starch, peeler centrifuge is introduced here. By centrifugal force, the dewatering machine separate water from starch slurry. After dewatering, we can get starch with moisture content about 40-42%.

Starch drying machine

Based on GB standard, final starch moisture should be around 12-14%. So after dewatering process, we will need flash dryer to get required starch powder. Flash dryer is one of key equipments in cassava starch manufacturing process, which can make starch dried completely in instant. Besides in our drying system, we use negative pressure, reducing starch loss and purifying working environment.

Cassava starch manufacturing process is mature in China and can compete with European machines. Doing Machinery supply complete cassava starch production line with good quality and more competitive price. If you are worried about high cost of European equipment, why not contact us for one more choice ?