Reliable 1000°C Rotary Kiln for Calcination and Heat Treatment

1000℃ High-Temperature Energy-Saving Rotary Electric Kiln

This high-temperature energy-saving rotary kiln adopts an electrically heated rotary furnace structure, integrating an intelligent temperature control system, a variable frequency speed regulation system, an automatic screw feeding device, an electric lifting mechanism, and a continuous cooling and discharging system. It enables continuous feeding, continuous heating, and continuous discharging, significantly improving production efficiency and reducing labor costs.

The furnace body features a double-layer air-cooled structure, a high-purity alumina lightweight lining, and a four-layer energy-saving insulation design, characterized by rapid heating, uniform temperature, high thermal efficiency, and low energy consumption.

Product Features

1. Large-diameter furnace tube, long heating zone, strong batch processing capacity

The furnace tube has a diameter of 400mm and a heating zone length of 3000mm. Made of 310S stainless steel, it is high-temperature resistant and oxidation-resistant. The large-diameter, long heating zone design is suitable for continuous calcination of large batches of materials, significantly improving the capacity of a single unit.

2. Dual adjustment of furnace tube tilt and rotation speed, precise control of material residence time

The furnace tube tilt angle is adjustable from 0-10 degrees, and the furnace tube rotation speed is adjustable from 0-10 rpm (inverter digital display control). The flexible combination of tilt angle and rotation speed allows for precise control of the material residence time within the furnace tube, adapting to the calcination process requirements of different materials.

3. Three independent temperature zones, excellent temperature uniformity

Three temperature control points and three independent temperature control systems, each temperature zone is independently controlled. K-type thermocouple temperature measurement range 0-1320℃, temperature control accuracy ±1℃, heating rate adjustable from 1℃/h to 20℃/min. 30-segment programmable temperature control curves meet the requirements of complex calcination processes.

4. Dual frequency conversion control, independent speed adjustment for feeding and furnace tube

The feeder rotation speed is adjustable from 0-5 revolutions per minute (adjustable via digital display on the frequency converter), and the furnace tube rotation speed is adjustable from 0-10 revolutions per minute (adjustable via digital display on the frequency converter). The feeding speed and furnace tube speed are independently controlled to match the feeding rate and throughput speed of different materials.

5. Rotary seal, controllable atmosphere

The inlet and outlet adopt rotary seals, providing excellent sealing performance. Equipped with a nitrogen flow meter, it can introduce protective gas to meet the atmospheric requirements of different materials.

Temperature	1000℃
Power Supply	AC 380V / 50Hz
Maximum Operating Temperature	1100℃
Continuous Operating Temperature	1000℃
Temperature Control Accuracy	±1℃
Furnace Tube Material	310S Stainless Steel
Heating Zone Length	Tube Diameter 400mm × Heating Zone 3000mm
Furnace Tube Tilt Angle	0~10° adjustable
Feeder Rotation Speed	0~5 r/min adjustable, frequency converter control, digital display
Furnace Tube Rotation Speed	0~10 r/min adjustable, frequency converter control, digital display
Sealing	Rotary seals at feed inlet and outlet
Gas Inlet	1 inlet + 1 nitrogen flow meter
Temperature Control Points	3 points, three sets of temperature control systems
Temperature Sensor & Range	Type K thermocouple
Programmable Segments	30 segments
Furnace Body Structure & Material	Air-cooled double-layer carbon steel structure with effective air-guide baffles for full cold-air circulation; cools the heating element terminals to prevent high-temperature oxidation
Refractory & Insulation Material	Vacuum-formed high-purity alumina lightweight material; high-temperature resistance, low heat storage, thermal shock resistance, no cracking, no spalling, excellent insulation
Safety Temperature Control	Closed-loop SCR (thyristor) module control with phase-shift or zero-crossing triggering; continuously adjustable output voltage, current, or power; features constant voltage, constant current, or constant power characteristics. Inner current loop + outer voltage loop ensures output current is limited within rated range under sudden load changes or overcurrent conditions, protecting heating elements from excessive current/voltage surges for safe and reliable control
Heating Rate	1℃/h ~ 20℃/min, adjustable
Heating Elements	High-temperature silicon carbide (SiC) rods
Heating Element Position	Surrounding the furnace tube, horizontally aligned
Temperature Curve Programming	Intelligent controller supports standard PID, AI artificial intelligence PID (APID), or MPT regulation with self-tuning and self-learning functions; no overshoot or undershoot. Features 30-segment programmable control for arbitrary ramp/soak profiles; supports jump (loop), run, pause, and stop commands with on-the-fly program modification; curve-fitting algorithm ensures smooth and continuous temperature control
Furnace Shell Temperature	≤ 45℃
Computer Interfaces	RS485, RS232, USB

Application Areas

• Continuous Calcination of Powder Materials: Suitable for large-scale continuous calcination of various powder materials (such as catalyst powders, battery material precursors, ceramic powders, etc.).
• Heat Treatment of Granular Materials: Suitable for continuous drying, activation, and calcination processes of granular materials such as molecular sieves, catalyst particles, and adsorbents.
• Metal Oxide Preparation: Suitable for the synthesis and calcination of metal oxides, such as the large-scale production of alumina, iron oxide, nickel oxide, and cobalt oxide.
• Battery Material Processing: Suitable for continuous calcination and heat treatment of precursors for battery cathode materials such as lithium iron phosphate, ternary materials, and lithium cobalt oxide.
• Catalyst Activation: Suitable for the activation and calcination processes of catalyst supports, molecular sieves, and other materials.

Frequently Asked Questions (FAQ)

1. What materials is the rotary electric kiln suitable for processing?

The equipment is suitable for powders, granules, flakes, and some blocky materials, and can be used for continuous calcination, roasting, sintering, drying, and heat treatment processes.

2. How is the residence time of the material in the furnace controlled?

The residence time of the material can be precisely controlled by adjusting the furnace tube rotation speed (1～30 r/min) and furnace tube inclination angle (1°～15°) to meet different process requirements.

3. Is the discharge temperature high?

The equipment is equipped with a 2300 mm long cooling device, which can reduce the discharge temperature to below 50℃, facilitating subsequent material collection and conveying.

4. Does it support continuous production?

Yes. The equipment adopts an automatic screw feeding, continuous rotary heating, and continuous cooling discharge design, enabling 24-hour continuous and stable operation.

5. Can it be customized according to process requirements?

Yes. The equipment can be customized according to customer needs, including furnace tube size, processing capacity, operating temperature, heating method, degree of automation, and control system, to meet different industrial production processes.