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Our company devloped edible cassava flour production line which aim at africa local abundent cassava source. The newest food grade cassava flour production process solve daily staple food and develop cassava usage and processing.

Process description

Root reception and washing

The fresh cassava roots are taken afield to the factory by truck. After being weighed and sampled for starch content determination the fresh roots will be unloaded to the raw material storage platform.

When production begins cassava roots will be taken by a shovel loader out of raw material storage platform into the reception-hopper installed with electromagnetic vibrancy feeder at the bottom. Removing the roots onto the inspection belt.

Roots are dropped onto the belt of an inclined belt conveyor where stems and branches are picked out and woody tissues of cassava roots are manually cut off. Prevent hard woody tissues entering into next rasping unit and reduce the rasper loading. On the other end of belt is a squirrel cage type dry cleaner which will get rid of the sand and peels without water. The sand and peels pass through the meshes of dry cleaner and then are collected to a sand collecting gutter for periodical clean-up.

Dry cleaned the roots are sent to paddle washer for 3 stage water cleaning to get rid of remained sands and broken skin. Add process waste water in the first stage washer. Sands will be soaked in water and removed. The roots pass through the trough in different area to next stage with cleaning water, cleaning washing water enter into next washer. The cassava is cleaned by this countercurrent method. Washed clean roots are placed onto inspection belt of the inclined belt conveyor .The sands and impurity is periodical discharged .On the inclined belt, recheck whether there are stem and impurity in the material or not. Stem should be manual cutter off. The inspected material is transported to rasping unit.

Grinded and rasping unit

The tuber is grinded and become low broken percentage . That means 50% cassava flour is not separated and combined with fiber. In the rasping process, should add process water to dilute slurry. the potato slurry in the collection trough is pumped in to desanding cyclone. Don't make the cassava flour dissociate and make the cassava flour combine with fiber. So the special design of rasper is vital for flour fineness and freeness.

Desanding unit

In the desanding unit, sands and sawteeth etc coarse particle will be removed from cassava slurry. This unit is made of ceramic cyclongnetts,sands collection tank,automatic desanding valve and back flush device.back flush avoid cassava flour loss in desanding process. Desanded slurry is sent to dewatering unit.

Cassava flour detoxification and dewatering

Because there is hydrocyanic acid toxic substance in cassava peels. In this unit, we use filter presser to dewatering and detoxification process.

When slurry reaches to certain liquid position in slurry tank, start to dewater by frame filter presser. Then transport the material to cassava flour drying procedure by belt conveyor.

Drying and packing unit

Dewatered cassava flour cake contains high moisture to 45~50%, which can’t enter into flash dryer directly and will be mixed with dry flour and reduce the moisture to 38%, then transported to feeding port of flash dryer by conveyer belt ,pass through feeder and enter into raiser. The heat source of flash dryer is steam heat exchanger. Wet cassava flour is heated by hot wind and water is steamed. After drying, cassava flour and air are separated in cyclone separator. At the bottom of cyclone separator, it is closed by air closer. after wet air leave cyclone separator , which is discharged in to atmosphere. Collected cassava flour is transported to vibration sieve unit; the coarse particulate matter is sieved out. The sieved cassava flour is transported to hopper for storing and cooling.

Beijing Marketing Center: Sino-Food Technology Co., Ltd.
Address: Room 0912-15, Taifenghuizhong Building, No.120 Zhushikou West Street, Xicheng District, Beijing (100050), China.
Tel: +86-10-63013118 Fax: +86-10-63019510
Production base: Sino-Food Machinery Co.,Ltd
Address: No.26, Group 1, Jingxi Village, Gao Xin Park, South Jingzhou City,Jingzhou, Hubei Province (434000), China.
Tel:+86-716-6105111/6105188 Fax:+86-716-6105199