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Potato Starch Machinery

Fully Automatic Potato Starch Production Line with a finished product capacity of 500 kg/hr is a high-end industrial installation. Unlike a starch recovery system (which collects waste starch from a chip line), this is a primary extraction plant that converts raw potatoes into high-purity starch powder.

To produce 500 kg of finished starch per hour, you typically need to process 3 to 4 tons of raw potatoes per hour (based on a standard 15–18% starch yield).

1. Technical Specifications (500 kg/hr Output)

Feature

Details

Input Capacity

3,000 – 4,000 kg/hr (Raw Potatoes)

Output Capacity

500 kg/hr (Standard Starch Powder)

Electricity Load

150 kW – 200 kW (Total installed power)

Water Consumption

8 – 12 m3/hr (Soft water preferred)

Steam/Heat Requirement

0.6 – 1.0 Ton steam/hr (for Flash Dryer)

Operator Requirement

4 – 6 Skilled personnel per shift

Land Area Required

Approx. 30m x 8m (240 sq. meters)

2. Process Flow & Machine Details

The production line follows a "Wet Milling" process to ensure 99% purity.

Section A: Cleaning & Washing

  1. Dry Sieve / De-stoner: Removes sand, stones, and heavy mud using a rotating screen without using water.
  2. Rotary Drum Washer: Uses a paddle-wash system to clean the potatoes thoroughly.
  3. Secondary Peeler/Cleaner: Often a brush-roller machine that ensures the potatoes are 100% clean before crushing.

Section B: Crushing & Extraction

  1. High-Speed Rasper: The heart of the plant. It rotates at 2000+ RPM to break potato cells and release starch granules. High dissociation rates (98%+) are critical here.
  2. Centrifugal Sieve (Extraction): A multi-stage system (usually 4–5 stages) that separates the starch milk from the potato pulp (fiber).

Section C: Refining & Concentration

  1. Desander: A cyclone-based system that removes fine sand particles from the starch milk.
  2. Hydrocyclone Station: A 12–18 stage series of small cyclones that wash the starch milk with fresh water to remove proteins, fats, and cell sap, resulting in pure "white" starch milk.

Section D: Dewatering & Drying

  1. Vacuum Filter / Peeler Centrifuge: Reduces the moisture of the starch milk from 60% down to 38–40%, forming a "starch cake."
  2. Flash Dryer (Airflow Dryer): A tall vertical pipe system where hot air instantly dries the starch cake into a fine powder (13–18% final moisture).
  3. Sifting & Packaging: A vibrating screen removes any lumps, followed by an automatic bagging machine (25kg or 50kg bags).

3. Utility & Infrastructure Requirements

  • Water Quality: Starch extraction requires high volumes of water. Using Soft Water (low calcium/magnesium) is mandatory to prevent the starch from turning grey or yellow.
  • Waste Management: The plant produces "Potato Pulp" (fiber) and "Cell Liquid." The pulp is usually sold as high-value animal feed, while the liquid requires an Effluent Treatment Plant (ETP).
  • Boiler: You will need a small industrial boiler (Gas, Diesel, or Wood-fired) to provide the heat for the Flash Drying stage. 
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