The experimental small rotary furnace is a widely used experimental equipment in the fields of material synthesis, heat treatment, sintering, catalytic reactions, etc. Its core design feature is to achieve uniform heating and reaction of materials through slow rotation of the furnace body. Let's take a detailed look at the introduction of the small rotary furnace used in the experiment below!

Small rotary furnaces commonly used in experiments (click on the image to view product details)

1. Equipment structure and working principle
Furnace structure
Rotating design: The furnace body is usually cylindrical and made of high-temperature resistant materials such as alloys, corundum, quartz, etc. It is driven by a motor to slowly rotate at a speed of 1-10 rpm. During the rotation process, the material continuously rolls inside the furnace to ensure uniform heating and avoid local overheating or undercooking.
Heating method: using resistance wire, silicon carbon rod, silicon molybdenum rod and other methods, the temperature control accuracy can reach ± 1 ℃, and the highest temperature can reach over 1600 ℃. Some devices support independent temperature control in multiple temperature zones to meet complex process requirements.
Atmosphere control: equipped with intake and exhaust ports, capable of introducing inert gases (such as N ₂ Ar）、 Reducing gases (such as H ₂, CO) or reactive gases (such as O ₂) meet the requirements of different atmospheres such as oxidation, reduction, and nitriding. Some devices support vacuum environment (≤ 10 ⁻³ Pa).

Sealing and transmission
Dynamic sealing: using rotary sealing devices (such as mechanical seals, magnetic fluid seals) to ensure no leakage under rotation and atmosphere control.
Transmission system: The furnace body rotates smoothly through motor, reducer, and chain/gear transmission. Adjustable speed to meet the processing needs of different materials.

2. Functional Features
Uniform heating and reaction
The rotating design keeps the materials rolling inside the furnace, avoiding the temperature gradient problem caused by material accumulation in traditional static furnaces and ensuring consistent product performance.

Accurate control of atmosphere and temperature
Supports multi-stage program temperature control, with adjustable heating rate, holding time, and cooling curve to meet different process requirements. The atmosphere control function can simulate the actual production environment and provide reliable data for process amplification.

Flexible operation
Modular design, supports quick replacement of furnace tubes or crucibles, and adapts to different material handling. Some devices are equipped with touch screens or upper computer software to achieve automated control and data recording.

Safety and Environmental Protection
Equipped with safety devices such as over temperature protection, leakage protection, and gas leakage alarm to ensure the safety of the experiment. The exhaust treatment system can effectively collect harmful gases and reduce environmental pollution.

3. Application scenarios
material synthesis
Used for preparing ceramic powders, metal oxides, composite materials, etc. For example, in the synthesis of positive electrode materials for lithium-ion batteries (such as LiCoO ₂, NCM), a rotary furnace can achieve uniform sintering of the precursor and improve the electrochemical performance of the material.

Heat treatment and sintering
Suitable for sintering processes of metal powders, hard alloys, ceramics and other materials. Rotating heating can reduce abnormal grain growth, improve material density and mechanical properties.

catalytic reaction
In catalyst preparation, a rotary furnace can achieve uniform loading of active components and high-temperature activation. For example, in the preparation of VOCs catalytic combustion catalysts, the reduction and dispersion of precious metals are achieved through atmosphere control.

solid waste treatment
Used for pyrolysis or incineration of hazardous waste such as medical waste and heavy metal sludge. Rotating design ensures sufficient pyrolysis of waste and reduces secondary pollution.

Customized small rotary furnace for multi temperature zone experiments (click on the image to view product details)

4. Purchase suggestions
Clarify experimental requirements
Temperature range: Select equipment with appropriate temperature ranges (such as 1200 ℃, 1400 ℃, 1600 ℃) according to process requirements.
Atmosphere requirements: Determine whether inert gas, reducing gas, or vacuum environment is needed.
Material characteristics: Consider the material form (powder, particle, block), viscosity, corrosiveness, etc., and choose the appropriate furnace tube material (such as corundum, quartz, stainless steel).

Focus on core parameters
Temperature uniformity: Priority should be given to selecting equipment with temperature uniformity of ≤ ± 5 ℃ to ensure the reproducibility of experimental results.
Temperature control accuracy: High precision temperature control (± 1 ℃) can reduce experimental errors.
Speed range: The wider the adjustable speed range, the more suitable the material types are.

Brand and after-sales service
Choose a brand with research and development capabilities and a good reputation, focusing on the stability, durability, and after-sales service response speed of the equipment. Some brands offer customized services to meet special process requirements.

Cost-effectiveness
Taking into account factors such as equipment price, energy consumption, and maintenance costs while meeting experimental requirements. Avoid blindly pursuing high configuration, which may result in resource waste.Click to learn more Rotary tube furnaces! Or click on online customer service to learn more about product information!