Starch Cyclone Separator

Jiangsu Stord Works Co., Ltd. is one of the most professional starch cyclone separator manufacturers and suppliers in China. If you're going to wholesale starch cyclone separator at competitive price, welcome to get quotation from our factory. Customized orders are welcome.

A starch cyclone separator is a specialized type of hydrocyclone used extensively in starch processing plants (corn, wheat, potato, cassava/tapioca) to separate starch granules from process water based on differences in density and particle size. It's a critical piece of equipment for starch concentration, washing, and refining.

✔ Concentration:Separates a dilute starch slurry (typically 5-12°Bé) into a concentrated underflow (typically 20-22°Bé) and a clarified overflow (containing fine fibers, proteins, and soluble components).

✔ Washing/Refining:Used in multi-stage "battery" configurations to progressively wash starch granules free of impurities (protein, solubles, fine fibers) using counter-current fresh water flow.

1. Pressurized Feed:The dilute starch slurry is pumped tangentially into the cyclone under pressure (typically 0.4 - 0.7 MPa / 4 - 7 bar).

2. High-Velocity Vortex:Tangential entry creates a powerful, high-speed rotating vortex within the conical body.

3. Centrifugal Force:This spinning motion generates strong centrifugal forces. Denser particles (starch granules) are forced radially outwards towards the cyclone wall.

4. Spiral Downward Flow (Underflow):The denser starch slurry moves downward along the conical wall in a spiral path and exits through the narrow apex (underflow nozzle) as concentrated starch milk.

5. Spiral Upward Flow (Overflow):The lighter components (water, fine fibers, solubles, proteins) migrate towards the center axis and form a reverse spiral moving upwards. This stream exits through the vortex finder (central pipe at the top) as clarified overflow.

Material:Almost exclusively **Stainless Steel (316L)** for food-grade hygiene and corrosion resistance against process water and starch slurry.

Geometry:Optimized cone angles and length-to-diameter ratios for efficient starch separation. Smaller diameters generally give finer separations but lower capacity.

Apex (Underflow) Nozzle: Crucial adjustable component. Size controls:

* Underflow density/concentration.

* Sharpness of separation (avoiding starch loss to overflow).

* Stability of the air core (essential for operation).

Vortex Finder (Overflow):Size and immersion depth affect separation efficiency and flow split.

Modular Design:Often manufactured in standardized sizes for easy arrangement in multi-stage batteries.

① Continuous Operation:No moving parts, allowing 24/7 processing.

② High Capacity:Compact size handles large volumetric flows.

③ Efficiency: Effective separation of starch granules (density ~1.5 g/cm³) from lighter impurities in water.

④ Scalability:Easy to arrange multiple cyclones in parallel (for capacity) or series (for washing efficiency).

⑤ Relatively Low Maintenance:Simple design with few wear parts (mainly apex nozzles).

⑥ No Filter Media:Avoids clogging issues common with screens/filters when dealing with fine fibers.

*Primary Concentration:After initial fiber separation (screens/centrifuges), concentrating the raw starch milk.

*Starch Refining (Washing) Batteries:The core of the refining process. Multiple stages (8-14 cyclones per stage) are arranged counter-currently. Fresh wash water enters the final stage overflow, progressively washing starch moving backward through the stages. Concentrated, purified starch exits the first stage underflow.

*Gluten Concentration (in Corn Wet Milling):Sometimes used to concentrate gluten protein after primary separation from starch.

* Grit Removal:Separating denser sand or other heavy contaminants.

A starch cyclone separator is a vital, efficient, and robust centrifugal device using no moving parts to concentrate and refine starch slurries. Its ability to handle large flows continuously with high separation efficiency based on density makes it indispensable in modern starch processing for producing high-purity starch products.

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