Grain Soaking (Tempering) Systems for Corn & Grain Flaking
Grain soaking solutions temper kernels to a uniform moisture profile for consistent conditioning and flaking. Built for feed mills and oilseed plants, they improve flake quality and throughput, enhance gelatinization and flake durability, and reduce energy use—choose a system by capacity and process needs.
How We Deliver
Agitated Soaking Tanks (Batch)
Stainless tanks with recirculation and agitation for uniform wetting; inline water dosing, optional temperature control, sample ports, and sanitation-friendly internals.
Soaking Process
1.Basic Process
Water Spraying via Screw Conveyor**: After cleaning, corn is lifted to the top layer by a bucket elevator, evenly sprayed with 40–50°C warm water via a screw conveyor, and then stored in a soaking bin for 8–18 hours to allow surface moisture penetration (soaking time depends on corn moisture content).
2. High-Efficiency Process (Optional)
German Ultrasonic Moistening Machine: Uses high-frequency vibration to accelerate water penetration through micro-cracks in the corn endosperm, reducing soaking time to 4–12 hours with an internal-external moisture gradient ≤2%.
Bühler Moistening System
Moisture Applicator
Moisture Applicator + Tempering Bins (Inline):
Moisture Applicator (Intensive Dampener) applies water precisely on the move; tempered in one or more bins for even distribution. Options include NIR moisture sensing, flow metering, and CIP-ready design.
Why It Matters
Consistent 18% moisture drives uniform gelatinization in the Steam Conditioner, improves flake durability, reduces energy per ton, and stabilizes downstream flaking.
Moisture Right. Flakes Right.
PROVIDED EQUIPMENT
Custom-built to your throughput.
Water-Add Screw Conveyor
- Purpose: Dose and incorporate process water uniformly upstream of tempering.
- Capacity: 15 TPH.
- Materials: 304 Stainless Steel; screw Ø230 mm; shell 3 mm; flight 4 mm.
- Speed: 85 rpm; center distance ~4.3 m.
- Drive: SEW motor; chain drive; bolt-fixed.
- Bearings: SKF.
- Controls/Power: 24 VDC control; 380 V, 50 Hz.
All models can be sized and configured to match your required capacity and layout.
4-Way Rotary Distributor
- Purpose: Split corn flow to multiple bins/lines with positive position feedback.
- Body/Finish: 304 Stainless Steel; painted exterior.
- Outlets: 4 × Ø200 mm.
- Speed/Capacity: 2 rpm; 15 TPH (corn).
- Switch: Limit switch.
- Gear Motor: Guomao.
- Bearings: SKF.
- Controls/Power: 24 VDC control; 380 V, 50 Hz.
Soaking Tanks
- Purpose: Temper/soak kernels for uniform moisture prior to steaming.
- Type/Volume: Circular silo, 40 m³.
- Materials: 304 Stainless Steel; plate thickness 3 mm.
- Controls: Level device, 24 VDC.
Water-Retaining Gate
- Purpose: Hold or release water/grain as required during soaking/transfer.
- Size: 30 × 40.
- Materials: 304 Stainless Steel.
- Switch: Limit switch.
- Gear Motor: SEW.
- Bearings: SKF.
- Controls/Power: 24 VDC control; 380 V, 50 Hz.
Photos
Videos
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