Chenkai Group

Chenkai Group (formerly Changchun Construction Investment Company, founded 1991) is a state-owned enterprise under Changchun SASAC. Reorganized in 2001 and again in October 2020 as Changchun City Development Agricultural Investment & Development Group Co., Ltd., the group operates across urban-rural infrastructure, asset operation, finance/investment, and modern agriculture. As of end-2020, total assets reached RMB 50.5B with an AAA credit rating, supported by 8 HQ departments and 17 subsidiaries/branches—positioning the client to scale integrated agri-projects from genetics and feed through slaughter and cold-chain.

Jilin’s logic: cold winters, local corn, feedlot scale. Winters often reach −20 to −29 °C, demanding enclosed, winterized processing and stable local feedstock. The province’s push to convert corn stover and local grain into beef hinges on consistent TMRs and high-availability starch from steam-flaked corn. Chenkai Group required a brand-neutral, low-CapEx configuration with:

• Inline moisture control for precise tempering
• Steam containment to avoid upstream carryover and condensation
• Even bed drying/cooling for repeatable outlet moisture/temperature
• Insulated, enclosed handling for sub-zero reliability

Core Delivery Specs — Steam-Flaked Corn (as-produced)

Moisture (%, as-fed): ≤14.0; for southern ranches Apr 1–Sep 30: ≤12.5

Crude Ash (%, DM): ≤2.0 (Grade IV: ≤3.0)

Crude Protein (%, DM): ≥7.0

Bulk Density (g/L): Grade I <340; Grade II 340–380; Grade III 381–430; Grade IV 410–460

Foreign Matter (%, w/w): ≤1.0

Moldy Kernels (%, w/w): ≤2.0

Fines Passing 6 mm (%): ≤10 (Grade IV; others N/A)

Fines Passing 4 mm (%): ≤20 (Grade III; others N/A)

Starch Gelatinization (%, DSC): ≥65 (steam-flaked for ranch use); ≥60 (steam-cooked pressed corn)

Safety & Contaminant Limits (unless noted, at 88% DM basis):

Total Arsenic (mg/kg): ≤2

Lead (mg/kg): ≤10

Cadmium (mg/kg): ≤0.1

Tin (mg/kg): ≤1

Chromium (mg/kg): ≤5

Fluorine (mg/kg): ≤150

Nitrite (mg/kg): ≤15

Aflatoxin B1 (µg/kg): ≤5

Ochratoxin A (µg/kg): ≤100

Zearalenone (mg/kg): ≤0.5

Deoxynivalenol / DON (mg/kg): ≤3 for ranch use; ≤1 for feed plants

T-2 Toxin (mg/kg): ≤0.5

Fumonisins (B1+B2) (mg/kg): ≤60

Total Mold Count (CFU/g): <4×10^4

Salmonella (in 25 g): Not detected

HCH (Σ isomers) (mg/kg): ≤0.05

DDT (Σ DDE, DDD, DDT) (mg/kg): ≤0.02

Hexachlorobenzene / HCB (mg/kg): ≤0.01

Note: “DM” = dry matter; all values shown with ranges mirror the grade definitions in your images. If a site adopts one target grade, keep only those lines to avoid ambiguity.

Equipment configuration: a three-stage line—stone remover, vibrating screen, and magnetic separator—to remove impurities, gravel, and metal debris.

We use Bühler’s three-piece water-addition suite—an inline moisture sensor, a dosing controller, and a sanitary injection manifold—to monitor corn moisture in real time and meter make-up water precisely.

Process Flow

• Inline Measurement & Water Dosing: As whole corn enters tempering, the inline sensor reads kernel moisture continuously. The controller drives the dosing valve/pump so the actual moisture tracks the target setpoint in real time.
• Soaking (Tempering) in the Soak Bin: Condition the grain in a dedicated Soak Bin for 10–18 hours (adjust by raw-material condition and target kernel moisture). This step equalizes moisture across the endosperm and pericarp for downstream stability.
• Steam Conditioning (Steam Chest): Convey tempered corn to the Steam Conditioner. Here we recycle the soak water as process water for conditioning to reduce utility cost and waste. We recommend purified water at approximately 122–140 °F (50–60 °C) for consistent results and clean operation.

Soaking, Steam-Seal, and No-Surge Flow—Built for Clean, Low-Capex Operation

Soaking (Tempering). We temper whole corn in a controlled Soaking step to equalize kernel moisture before cooking. The temper is set to the target moisture for downstream stability; residence time is adjusted to the raw corn condition and the flaking spec.

Zero Steam Carryover by Design. To keep the Steam Conditioner tight and efficient, we install a stainless-steel rotary airlock at the outlet. The airlock locks steam inside the conditioner, maintaining temperature and moisture where they matter, and prevents backflow of vapor into the upstream water-addition screw conveyor. Result: cleaner dosing, steadier cook, and less condensate where you don’t want it.

No Buffer Bins—Lower Roof, Lower Budget. We eliminate all intermediate buffer/surge bins between tempering and conditioning. This brand-new flow scheme saves at least 1.5 m (≈5 ft) of building height, reduces civil works and steel, and simplifies layout and maintenance. The solution is BellaEx proprietary, proven in 80+ customer installations over long-term operation.

What you gain: tighter moisture control, zero fugitive steam upstream, fewer hold-ups, and a shorter, lower-capex line that still delivers stable flakes and repeatable performance.

Flaking: cooked corn discharges directly into the flaking mill for continuous online flaking; roller surface temperature is held at 80–90 °C (176–194 °F). Thickness control: standard feed use is 1.1–1.5 mm with ±0.05 mm tolerance. Custom options include ultra-thin flakes ≤1.0 mm for high-digestibility formulas and thicker flakes ≥2.0 mm to moderate rumen degradation rate.

Single-Deck Dryer-Cooler with Rotary Spreader — Even Bed, Consistent Finish

This project adopts a single-deck Dryer-Cooler to finish steam-flaked corn. Between the Flaking Mill and the Dryer-Cooler, we install a rotary spreader to distribute product uniformly across the deck. The spreader eliminates uneven bed depth, preventing hot spots, channeling, and localized over- or under-drying. Airflow becomes predictable, residence time stays on spec, and outlet moisture and temperature are tighter—run after run.

The selected Dryer-Cooler is built with an SS304 stainless-steel housing for hygiene, corrosion resistance, and long service life in warm, wet environments. The single-deck configuration simplifies access, reduces headroom, and cuts maintenance time, while still delivering the bed stability needed for clean flake handling and reliable storage downstream.

What this achieves: uniform bed formation at the inlet, stable thermal profile through the deck, fewer fines and clumps, and a consistent, market-ready flake at discharge—with a compact footprint and sanitary construction.

Packaging and logistics: bulk storage in vertical silos with moisture monitoring (typical setpoint ≤12%) and compatibility with large-scale feeding systems. Custom packaging is available, including 25 kg woven bags and vacuum-packed one-ton bags.

Chengkai Group - China