Cassava Starch XSG Flash Drying Machine (Spin Flash dryers )
(Rotating flash Dryer)( Flash cooler )
What is Cassava Starch
It is a woody shrub of the spurge family, Euphorbiaceae, native to
South America. It is extensively cultivated as an annual crop in
tropical and subtropical regions for its edible starchy tuberous
root, a major source of carbohydrates. Though it is sometimes
called yuca in Spanish, it differs from the yucca, an unrelated
fruit-bearing shrub in the family Asparagaceae. Cassava, when dried
to a powdery (or pearly) extract, is called tapioca; its fermented,
flaky version is named garri.
Cassava is the third largest source of food carbohydrates in the
tropics, after rice and maize.Cassava is a major staple food in the
developing world, providing a basic diet for over half a billion
people.It is one of the most drought-tolerant crops, capable of
growing on marginal soils. Nigeria is the world's largest producer
of cassava, while Thailand is the largest exporter of dried
Cassava is classified as either sweet or bitter. Like other roots
and tubers, both bitter and sweet varieties of cassava contain
antinutritional factors and toxins, with the bitter varieties
containing much larger amounts.They must be properly prepared
before consumption, as improper preparation of cassava can leave
enough residual cyanide to cause acute cyanide
intoxication,goiters, and even ataxia or partial paralysis.The more
toxic varieties of cassava are a fall-back resource (a "food
security crop") in times of famine in some places.Farmers often
prefer the bitter varieties because they deter pests, animals, and
XSG Cassava Starch Spin Flash Dryer Description
XSG Cassava Starch Spin Flash Dryer is widely used for drying
materials such as paste, cake shape, powder, granules material,
etc. It is a new type high drying efficiency and low energy
consumption equipment that researched and developed by our company.
Hot air enters the stirring part of drying chamber from the bottom,
material is stirred by stirring device and then the hot air exerts
strong shearing, blowing, floating and rotating effect to material.
Therefore material is crushed by centrifugal, shearing, impacting
and friction effect. It strengthens the heat exchanging process. In
the bottom of drying chamber, big and damp granules are crushed by
stirring device, the particles with low moisture content and small
size are lifted by rotary air stream, and be further dried. Gas and
solid two phases rotary flow, inertia of solid phase is bigger than
gas phase, the relative velocity between gas phase and solid phase
is high, heat exchanging efficiency is strengthened, so the drying
intensity of this machine is high.
XSG Cassava Starch Flash Dryer Application Ceramic industry:
Kaolin, bentonite, clay, etc.
Foodstuff industry: Soybean protein, gelatinized starch, vinasse,
triticum, wheat starch, etc.
Organics: Atrazine, lauric acid cadmium, benzoic acid, sodium
oxalate, acetyl cellulose, etc.
Dyestuff: Anthraquinones, black iron oxide, indigo dye, butyrate,
titanium oxide, zinc sulfide, various azo dye intermediates, etc.
Inorganic: Borax, calcium carbonate, hydrogen peroxide, etc.
Substance: Copper suifate, ferrix oxide, three antimony oxide, all
kinds of metal salt, synthetic cryolite, etc.
Wet material is dispersed into a stream of heated air (or gas)
which conveys it through a drying duct. Using the heat from the
airstream, the material dries as it is conveyed. Product is
separated using cyclones, and/or bag filters. Typically, cyclones
are followed by scrubbers or bag filters for final cleaning of the
exhaust gases to meet current emission requirements.
The feed system consists of a feed vat where a discontinuous flow
of product is buffered and fragmented by an agitator prior to
continuous drying. A variable speed feed screw (or pump in the case
of fluid feed) forwards the product to the drying chamber.
The rotor at the conical base of the drying chamber fluidizes
product particles in a drying-efficient hot air flow pattern in
which any wet lumps are rapidly disintegrated. Hot air is supplied
by a temperature-controlled air heater and speed-controlled fan,
entering the drying chamber at a tangent in order to establish a
turbulent, whirling air flow.
Airborne, fine particles pass through a classifier at the top of
the drying chamber, while larger particles remain in the air flow
for further drying and powdering.
The drying chamber is rigidly designed to withstand pressure shock
in the event of explosive combustion of flammable particles. All
bearings are effectively protected against dust and heat.
Powder from the drying chamber is collected in bag filter, while
the outlet airleaves the system at the top via a suction fan.
Pneumatic coolers are a simple and reliable method of cooling and
conveying dried product. In many instances ambient air will achieve
the desired cooling duty. Where required, greater cooling capacity
and a finer degree of control can be achieved with conditioned air
at a controlled humidity and temperature.
1. This machine combines the whirl technology with the fluidity,
ejection and smashing step technologies.
2. The equipment is compact and small in size, high in production
efficiency and continuous in the production. It has realized that "
small equipment can perform the large production".
3. The drying capacity for this machine is big but its energy
consumption is low. Its heat efficiency is high.
4. The material stay time is very short. The quality of the final
products is very good. The machine can be used for drying the heat
5. For the negative pressure or the micro-negative pressure
operation, the machine is good for its tightness and high in the
efficiency so as to eliminate the environmental pollution.
6. High drying efficiency providing low energy costs
7. Continuous processing with short processing time
8. Low operator overheads and minimum maintenance costs
9. Controlled residence time enabling high temperature drying
10. Available in cGMP compliant configurations
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