This rotary drum roasting equipment is widely used for roasting peanuts, sesame seeds, rapeseeds, sunflower seeds and other oil-bearing materials before oil extraction. It can also be used for roasting edible nuts and snacks, including peanuts, sunflower seeds and chestnuts.

The machine features a horizontal rotating drum that continuously lifts and tumbles the materials during heating. This helps distribute heat more evenly, reduces localized overheating and improves roasting consistency compared with traditional manual pan roasting. Depending on the required heating configuration, the equipment can use electricity, coal or firewood as a heat source. Its compact structure, simple operation and practical processing capacity make it an economical choice for businesses looking for reliable nut roasting equipment.

Technical Specifications of KF Grain Roaster

Model	Capacity	Dimensions (mm)	Motor Power
KF-25G	60–80 kg/h	1000 × 500 × 900	700 W
KF-130G	300–400 kg/h	1500 × 700 × 1500	1,500 W

Note: The listed power refers to the drive motor. Actual heating energy consumption depends on the selected heating configuration, raw material, operating temperature and production conditions. Dimensions and specifications can be confirmed when placing an order.

KF Series Electric Rotary Drum Grain Roaster – 60–400 kg/h capacity for commercial grain, peanut and nut roasting.

Main Features and Advantages of the KF Grain Roaster

1. Rotary Drum Design for Uniform Roasting

The machine adopts a horizontal cylindrical drum. During operation, materials are continuously lifted, turned and dropped as the drum rotates, allowing them to receive more even heat exposure. Compared with traditional manual pan roasting, this rotary design reduces labor requirements, minimizes uneven roasting and helps improve product consistency.

2. Electric Heating with Flexible Fuel Options

The standard configuration uses electric heating, providing convenient operation and adjustable heating conditions for different processing requirements. For customers with specific energy requirements, customized coal-fired and wood-fired heating configurations are also available.

3. Wide Range of Applications

This multifunctional nut roasting equipment can process various agricultural and food materials, including:

• Oilseeds: Peanuts, sesame seeds, rapeseeds and sunflower seeds.
• Edible nuts: Peanuts and other suitable nuts for commercial roasting.
• Grains and seeds: Selected grains and seeds requiring drying or heat treatment.
• Snack ingredients: Materials used in roasted nut and seed production.

For oil mills, the machine is suitable for oilseed pretreatment before screw pressing. For food processors, it provides a practical solution for commercial peanut and seed roasting.

4. Convenient Feeding and Automatic Discharge

The machine features a large feeding hopper for easy material loading and an inclined discharge outlet for convenient unloading. After roasting, the discharge mechanism allows finished materials to be released efficiently, reducing manual handling and improving production efficiency.

Practical Operating Tips for Better Roasting Results

Proper operation and maintenance are essential for maintaining roasting consistency and extending the service life of nut roasting equipment.

1. Start Drum Rotation Before Heating

Always start the drum motor before applying heat. The drum should continue rotating throughout the heating process.

Heating a stationary drum for an extended period can cause localized overheating, uneven thermal expansion and potential deformation or damage.

2. Adjust Roasting Temperature According to Raw Materials

Different materials require different roasting conditions.

For certain conventional oilseed roasting applications, approximately 130°C may be used as an initial reference temperature. A typical batch roasting cycle may take around 14–20 minutes, depending on the material and operating conditions.

However, these figures should not be treated as universal settings. Peanuts, sesame seeds and rapeseeds differ in size, initial moisture content, oil content and thermal sensitivity.

Operators should adjust temperature and roasting time according to:

• Initial moisture content of the raw materials.
• Seed or nut size and uniformity.
• Required final moisture content.
• Intended application: oil extraction or direct consumption.
• Heating intensity and actual drum temperature.

For commercial peanut roasting equipment, it is particularly important to avoid excessive temperatures that can cause surface burning, undesirable flavors or inconsistent roasting.

3. Cool Materials Before Further Processing

After roasting, allow the materials to cool appropriately before storage or further processing.

For oilseed applications, cooling helps stabilize the material before feeding it into a screw oil press. For snack production, proper cooling helps prevent residual heat and moisture from affecting product texture and packaging quality.

4. Clean and Maintain the Roasting Drum

After each production cycle, remove residual materials and accumulated impurities from the drum and feeding or discharge areas.

Before long-term shutdown, clean and dry the internal drum surface thoroughly. If the equipment will remain idle for an extended period, apply a suitable thin protective oil film to exposed carbon-steel surfaces where appropriate, ensuring that it is removed or cleaned before food-contact operation resumes.

Regularly inspect the drive motor, transmission components, bearings, fasteners and supporting frame to maintain safe and stable operation.

Applications in Oilseed and Nut Processing

The KF Series nut roasting machine is suitable for two main processing applications.

Oilseed Pretreatment Before Oil Extraction

In small and medium-sized oil mills, peanuts, sesame seeds and other oilseeds can be roasted before mechanical pressing.

A typical small-scale peanut oil processing line includes:

Raw Material Cleaning → Roasting → Cooling → Screw Oil Pressing → Oil Filtration

KMEC can also provide supporting equipment, including nut roaster machines, screw oil presses and oil filtration equipment, to help customers establish integrated oil processing solutions.

Commercial Nut and Snack Roasting

For food processing workshops and commercial roasting businesses, the machine can roast peanuts, sunflower seeds and other suitable products. Its rotary drum design reduces manual labor and helps achieve more consistent batch processing.

Contact KMEC Today for a Grain Roaster Quotation

Are you looking for reliable nut roasting equipment for your business? Please contact KMEC to discuss your raw materials, production capacity requirements, and preferred heating methods. We offer professional equipment recommendations, technical specifications, and customized solutions to support your grain and nut processing business. Contact us today to get a quotation for our grain roaster for sale.