Hydrocyclone Starch Refining Equipment

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

The starch hydrocyclone is used for refining and washing starch milk, with the primary purpose of removing soluble and insoluble proteins, fine fibers, and sugars to purify the starch.

Compared to disc separators, hydrocyclones offer high separation efficiency, advanced automation, and superior product quality. They also feature a simple structure, reliable operation, and easy maintenance. Under a certain pressure differential, they can separate particles as small as 4 microns. By utilizing centrifugal force, the hydrocyclone separates suspended particles based on size and specific gravity. The material enters the cylindrical body of the hydrocyclone tangentially under pressure, generating strong centrifugal force as it rotates inside. Heavier particles move toward the wall and spiral downward, exiting as a concentrated underflow, while lighter particles rotate upward near the center and discharge as a diluted overflow.

In the refining process of corn starch, hydrocyclones are typically arranged in a series of 9–15 stages, with a 12-stage countercurrent washing system as an example:

- The overflow from the second stage is mixed with the feed and pumped into the first-stage hydrocyclone.

- The first-stage overflow returns to the starch milk before centrifugal separation.

- The first-stage underflow is pumped into the second-stage hydrocyclone, and its underflow proceeds to the third stage, continuing sequentially to the final stage.

- Fresh wash water is introduced at the final stage, and its overflow flows back to the feed pump of the preceding stage. For instance, the third-stage overflow returns to the second-stage pump, mixing with the first-stage underflow before entering the second-stage hydrocyclone.

This countercurrent process concentrates protein-rich light liquid toward the first stage, where it is discharged as overflow, while protein-depleted heavy liquid moves toward the final stage, exiting as refined starch milk from the 12th-stage underflow.

1. Corn Starch

- Used in wet-milling processes to wash separated starch milk, removing soluble proteins (gluten), fats, and fine fibers.

- Refines crude starch milk (protein content: 3.5%–5%) to a purified starch milk with protein content ≤0.4%.

Typical Process: Crude starch milk undergoes 12-stage countercurrent washing, with the final underflow reaching 20–22°Bé (39% solids), meeting dehydration and drying requirements.

2. Cassava starch (Potato, Cassava, Sweet Potato, etc.)

- Removes soluble proteins, fine residues, and fibrous impurities from starch milk, improving whiteness and purity.

- Example: In hydrocyclones, feed concentration ≥4°Bé, output concentration 18–22°Bé.

3. Wheat Starch & Miscellaneous Grain Starches (Pea, Mung Bean, etc.)

- Separates starch from gluten proteins and concentrates recovered starch milk.

4. Modified Starch Production

- Washes and recovers modified starch milk, removing chemical residues and byproducts.

1. Technical Parameters

Notes:

1. n indicates the number of hydrocyclone stages.

2. Due to variations in pump manufacturer standards, the above dimensions are for reference only.

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