A laboratory small rotary furnace is an experimental equipment commonly used in fields such as material synthesis, heat treatment, sintering, catalytic reactions, etc. Let's take a detailed look below!

Customized small rotary furnace for continuous feeding and discharging experiments (click on the image to view product details)

Structural composition
Furnace body: Usually adopts a double-layer shell structure to ensure good insulation performance, reduce heat loss, lower shell temperature, ensure experimental safety and stable environmental temperature. The furnace generally uses materials such as polycrystalline alumina ceramic fibers that are resistant to high temperatures and rapid heating and cooling, which can withstand high temperatures, have good insulation effects, and reduce the weight of the furnace body. Heating elements: Common ones include resistance wires, silicon carbide rods, silicon molybdenum rods, etc. If the silicon molybdenum rod can work stably at high temperatures, it can provide sufficient heat to reach a high level of temperature in the furnace, meeting the high temperature requirements of different experiments. Furnace tube: Materials such as quartz, stainless steel, and corundum tube are commonly used. Some irregular quartz tubes are also welded with lifting plates inside, which can make the powder sintering more complete and uniform when the furnace tube rotates. Transmission device: Generally driven by a DC motor, the furnace tube is rotated by the motor, and the speed can be adjusted within a certain range, such as 0-20r/min or 0-30r/min, to meet the requirements of different experiments for material rotation speed. Temperature control system: including temperature controller, thermocouple, etc., using PID automatic temperature control system, can achieve intelligent 30 segment programmable control, can accurately set and control parameters such as heating rate, insulation time, and cooling method, and the temperature control accuracy can generally reach ± 1 ℃. Sealing device: using dynamic sealing rotary joints, magnetic fluid sealing flanges, etc., can achieve good sealing performance, prevent material leakage during the calcination process, and also ensure the stability of the furnace atmosphere, meeting the requirements of vacuum or specific atmosphere experiments.

Functional Features
Uniform heating: By slowly rotating the furnace body, the sample can be uniformly heated during the heating process, avoiding local overheating or overburning. It is particularly suitable for samples that require uniform sintering or processing, such as sintering of powder materials, preparation of thin film materials, etc.
Accurate temperature control: Equipped with a high-precision temperature control system, it can accurately control the temperature inside the furnace and meet the strict temperature requirements of different experiments. Parameters such as heating rate, holding time, and cooling method can be set and controlled, which helps to achieve various complex experimental processes.
Atmosphere control: Some rotary furnaces are equipped with vacuum systems and gas input devices, which can create a vacuum environment inside the furnace or introduce specific protective gases such as nitrogen, argon, hydrogen, etc., to meet the strict requirements of material research and preparation for oxygen content, and prevent samples from reacting with oxygen, moisture, etc. in the air at high temperatures.
Easy to operate: Usually using a touch screen or computer control system, the operating interface is simple and intuitive, making it convenient for experimenters to set parameters, start, stop, and other operations. It can also monitor real-time operating status information such as furnace temperature and rotation speed. In addition, some devices also have remote monitoring functions, which can monitor and control the experimental process in the office or other locations through the network.

Application area
Materials science research: used for preparing high-performance ceramics, metal matrix composites, nanomaterials, etc., by rotating the raw materials to fully mix and react at high temperatures, obtaining uniform microstructure and properties. For example, in the preparation of ceramic materials, ceramic powder can be uniformly sintered in a rotary furnace to improve the density and mechanical properties of ceramics.
Electronics industry: can be used for annealing, oxidation and other processes of semiconductor materials to improve the performance and stability of semiconductor devices. For example, in the semiconductor chip manufacturing process, using a rotary furnace to anneal silicon wafers can eliminate internal stress and improve the electrical performance of semiconductors.
In the field of new energy, it is used to study the high-temperature preparation and performance optimization of electrode materials for lithium-ion batteries, solar cell materials, etc. For example, in the preparation process of lithium iron phosphate as a positive electrode material for lithium-ion batteries, the use of a rotary furnace can fully react the raw materials and improve the electrochemical performance of the material.
Chemical engineering: The process of preparing catalysts and drying reactants for chemical reactions, optimizing the performance and reaction efficiency of catalysts by controlling conditions such as temperature, atmosphere, and rotation speed.

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

precautions
Equipment selection: Users should choose the appropriate equipment model and configuration based on their experimental needs and material characteristics, including temperature range, rotation speed, furnace tube size, atmosphere control requirements, etc.
Operating standards: When using the equipment, it is necessary to strictly follow the equipment manual and operating procedures to ensure the normal operation and safe use of the equipment. For example, during the heating process, the operation should be carried out according to the prescribed heating rate to avoid equipment damage or experimental accidents caused by rapid heating.
Maintenance and upkeep: The equipment should be regularly maintained and serviced during use, checking the operation and wear of the equipment, replacing damaged parts in a timely manner, and ensuring long-term stable operation of the equipment. At the same time, it is necessary to keep the equipment clean and avoid dust, debris, etc. from entering the furnace, which may affect the experimental results and equipment performance.

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