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| Warranty: | 5 Years |
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This grain dryer offers a professional and efficient solution for drying a variety of grains, including corn, rice, wheat, and soybeans. It adopts an intermittent-cycle drying process with low-temperature and energy-saving performance, ensuring safe and uniform moisture reduction.
Engineered with a compact and rational structure, the machine is easy to operate, generates low noise, and supports multiple heating options such as electric, diesel, or biomass fuel-making it highly adaptable for different working environments.
Widely used in commercial grain processing plants and agricultural storage facilities, this dryer helps maintain grain quality while improving storage stability and overall productivity.
Complete Working
1. The dryer utilizes hot air as the heating medium for grain drying. Its internal structure primarily comprises an air inlet vent and angular ventilation boxes. The angular boxes are filled with grain, flowing continuously from top to bottom during drying.
2. Hot air enters through the air inlet vent, passing downward through the grain layer, and exhaust air is discharged via the exhaust vent. This concurrent flow direction of hot air and grain movement is defined as "mixed flow" drying.
3. As hot air traverses the grain layer, it exchanges heat and moisture with the grains: the hot air transfers thermal energy to the grains, raising their temperature. The heated grains then release moisture into the air, which becomes exhaust gas carrying the evaporated water vapor.
4. Following drying, the warm grains move to the tempering section, where the temperature and moisture between the inner and outer layers of the grains balance out, ensuring uniform moisture reduction.
5. After tempering, the grains enter the cooling section. Here, they are cooled to a temperature suitable for long-term storage before being discharged through the outlet.
| Capacity (T/D) | 100 | 150 | 200 | 300 | 400 | 500 | 600 |
| Moisture Expected Lowed Down (%) | 3~5 | ||||||
| Heated Media | Cleaning Air | ||||||
| Heated Air Tempereture
(ºC) |
<65 | ||||||
| Maximum Heating Temperature of Grain (ºC) | 35 | ||||||
| Drying Evenness (%) | >98 | ||||||
| Unit Heat Consumption
(kj/kgH2O) |
5450~6700 | ||||||
| Coal Consumption
(Standard) (kg/h) |
110~180 | 160~260 | 230~350 | 340~520 | 450~680 | 560~850 | 700~1000 |
Technical Advantages of Industrial Grain Drying Systems
Wide Moisture Adjustment Range
Maximum moisture reduction capacity of 25% per drying cycle, specifically engineered for preprocessing high-moisture grains.
Continuous Operation
Manual or PLC-controlled operation ensures stable performance with minimal manual input, reducing civil engineering costs by 30-50%.
Multi-Crop Compatibility
Adaptable to diverse grain types (rice, corn, wheat, etc.) through adjustable temperature and pressure parameters, enhancing operational flexibility.
Energy Recovery Technology
Integrated waste heat recycling system cuts energy consumption by 15-25% during maize drying processes, optimizing resource utilization.
Uniform Drying & Post-Processing
Gradual moisture removal paired with multi-stage slow cooling ensures grains achieve directly storable quality (≤13% final moisture content).
Eco-Friendly Efficiency
Hybrid energy-saving design combining low-temperature dehumidification and heat pump technology achieves an energy intensity of 0.2-0.3 kW·h/kg with zero pollution emissions.
Flexible Thermal Sources
Compatible with gas, steam, coal, and biomass fuels, supporting the transition to clean energy in agricultural processing applications.
1. Company Overview
Shijiazhuang Hongdefa Machinery Co., Ltd. is located in Wumashan Industrial Area, Zanhuang County, Shijiazhuang City, just a 4-hour drive from Beijing.
We are a professional manufacturer and exporter of grain dryers, with a strong industry presence since 1982. With decades of experience, we have earned a solid reputation for quality, reliability, and international service.Hongdefa has a professional team of around 100 skilled workers, a 30,000 m2 modern manufacturing base, and a 1,000 m2 research and development center.
Our advanced facilities and experienced team ensure high-quality production and continuous innovation in grain milling technology.
Our engineering team includes over 30 highly qualified engineers, each with more than 15 years of experience in flour mill design, manufacturing, and on-site installation.
Our sales managers also bring over 10 years of international sales experience. They have visited more than 60 countries, meeting clients face-to-face, providing professional consultation, and helping establish overseas offices to better serve our global customers.
We provide lifelong after-sales support for all our machines.
Currently, we have:
Warehouses in Zambia and Kenya
A local office in Ethiopia
Authorized agents in DR Congo, Australia, Yemen, Burkina Faso, and other countries
These overseas service points enable us to offer quick response, local spare parts supply, and technical support, ensuring your production runs smoothly at all times
All our machines are manufactured to the highest quality standards and have passed international certifications, including ISO, CE, BV, SGS, and COC.
These certifications ensure our equipment meets global requirements for safety, reliability, and performance.
5. Loading & Shipping the Machines
The machine is first wrapped with protective film inside and waterproof plastic film outside to prevent moisture and dust.
For orders shipped in less than a full container, wooden crate packing is applied to ensure safety during transport.
Inside the container, the machine will be securely fastened with steel ropes to avoid any movement or damage.
All machines are carefully inspected and reinforced to ensure they arrive at the destination in perfect working condition.
Q1: Are you a trading company or a manufacturer?
A: We are a professional manufacturer. We warmly welcome global clients to visit our factory, where you can inspect the production line and verify machine quality firsthand.
Q2: Will you send engineers to install the dryer?
A: Yes. We currently have over 30 engineers stationed in various countries, including Zambia, Uganda, Zimbabwe, Malawi, Angola, the DRC, Ethiopia, and Nigeria. We can deploy an engineer to your location for on-site installation guidance.
Q3: Can you show how the grain dryer machine works?
A: Certainly. You are welcome to visit our factory to observe the production line in operation, or we can arrange a visit to a local operational machine in your country for a live demonstration of its functionality.
Q4: How about the after-sales service?
A: Our after-sales service is comprehensive. We provide on-site support, including installation, commissioning, and operator training through our dedicated team of engineers. Additionally, we have branch offices in Addis Ababa (Ethiopia), Lusaka (Zambia), and Ruiru (Kenya) to ensure prompt local assistance.
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