Hot Air Grain Dryer Machine for Corn Rice Millet Wheat Soybean Use

Product Description

Product Description

This grain dryer is a professional solution for drying multiple grains including corn, rice, wheat, and soybeans. As an intermittent-cycle drying machine with low-temperature and energy-saving features, it features a rationally designed structure, user-friendly operation, low noise levels, and optional heating methods (e.g., electric/fuel heating), making it widely applied in commercial grain drying scenarios.

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.

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.

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.

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.

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.

Product Parameters

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

Based on site conditions, climatic patterns, and geological factors, we offer tailored professional silo storage and cleaning system designs. These solutions are equipped with key components, including bucket elevators, unloading pits, pre-cleaning units, conveyors, and sweeping augers, ensuring they meet clients' diverse operational requirements.

Our Advantages

Technical Advantages of Industrial Grain Drying Systems

1. Wide Moisture Adjustment Range
   Maximum moisture reduction capacity of 25% per drying cycle, specifically engineered for preprocessing high-moisture grains.

2. Continuous Operation
   Manual or PLC-controlled operation ensures stable performance with minimal manual input, reducing civil engineering costs by 30-50%.

3. Multi-Crop Compatibility
   Adaptable to diverse grain types (rice, corn, wheat, etc.) through adjustable temperature and pressure parameters, enhancing operational flexibility.

4. Energy Recovery Technology
   Integrated waste heat recycling system cuts energy consumption by 15-25% during maize drying processes, optimizing resource utilization.

5. Uniform Drying & Post-Processing
   Gradual moisture removal paired with multi-stage slow cooling ensures grains achieve directly storable quality (≤13% final moisture content).

6. 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.

7. Flexible Thermal Sources
   Compatible with gas, steam, coal, and biomass fuels, supporting the transition to clean energy in agricultural processing applications.

 

 

 

Company Profile

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 maize milling machines and wheat flour milling machines with packing machines, 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.

2. Professional Engineering and Sales Team

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.

3. Lifelong Overseas Services

We provide lifelong after-sales support for all our maize milling 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 

4. Certified High-Quality Machinery

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.

FAQ

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.