Closed-cycle corn wet milling
Integration of advanced processes and production concepts to improve main-product and by-product yields and quality. Typical figures: 70% dry-basis starch yield and over 5.5% dry-basis gluten meal yield.
Corn Wet Milling
Starch production
Starch technology for corn, wheat, potato and cassava feedstocks, with process and plant design based on raw-material characteristics.
4 feedstocksCorn · Wheat · Potato · Cassava
Product overview
- Starch is a major food constituent and industrial raw material; commercial starch and starch milk serve finished-product and downstream uses.
- Focus on main/by-product utilization, equipment selection, heat and process-water circulation.
Starch is a major component of food and an important industrial raw material. Corn wet milling has been the standard extraction method since the early 19th century. Improved equipment, abundant year-round corn supply and better by-product utilization have expanded processing capacity.
Corn wet milling is the example shown. Wheat, potato and cassava require feedstock-specific design.
Figures & advantages
Corn wet milling figures
70%Starch yield, dry basis
> 5.5%Gluten meal yield, dry basis
< 0.6 tSteam per tonne of commercial starch
< 2 tWastewater per tonne of commercial starch
Chinese-made main equipment
Advanced equipment made in China forms the main equipment package to reduce capital cost.
Accurate, automated process control
Centralized DCS control supports high automation, reduced manual intervention, precise control and stable processes.
Closed-circuit water reuse
Process-water reuse reduces thermal consumption and effluent. Typical figures: less than 0.6 t steam and less than 2 t wastewater discharge per tonne of commercial starch, reducing operating cost and treatment load.
Typical KORN process figures and technical advantages. Final parameters are subject to project design and the technical agreement.
Complete routes & branches
Wet-milling starch production
Original bilingual process diagram from the company brochure. All labels and connections are preserved. Translated text outside the diagram is a reading aid.
Process notes and text version
01Corn starch main line
- Corn
- Purification
Cleaning separates impurities.
- Feeding
- Steeping
- Coarse milling
- Fine milling
- Gluten separation
- Starch refining
- Starch milk
Starch milk can also be dewatered and dried to commercial starch, according to the product plan.
- Sugar production
02Steeping preparation
- Sulfur
- Sulfurous acid preparation
- Steeping
03Corn steep liquor and reuse
- Steeping
- Steep-liquor concentration
- Concentrated corn steep liquor
- Spraying into fiber drying
04Germ, corn oil and germ feed
- Coarse milling
- Germ separation
- Germ washing
- Germ dewatering
- Drying
- Dried germ
- Oil extraction
- Crude corn oil + corn germ feed
05Fiber feed
- Fine milling
- Fiber separation and washing
- Fiber dewatering
- Drying
- Fiber feed
06Corn gluten meal
- Gluten separation
- Concentration
- Dewatering
- Drying
- Corn gluten meal
Related technologies
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