What experiments can be conducted using a multi zone rotary furnace for experiments?

The experimental multi zone rotary furnace, with its dynamic heating, independent control of multiple temperature zones, and atmosphere regulation capabilities, can be widely used in fields such as materials science, new energy, metallurgy, chemical engineering, and environmental protection. The specific experimental applications are as follows:

1. Materials Science Field
Preparation of Ceramic and Glass Materials
High temperature structural ceramic sintering: By independently controlling temperature in multiple temperature zones, gradient sintering of ceramic materials such as alumina and silicon carbide is achieved, optimizing grain growth and densification processes. For example, the three temperature zone design can simultaneously process ceramic powders of different compositions, shortening the experimental period.
Precision annealing and microcrystallization of glass: utilizing the uniform heating characteristics of a rotary furnace to avoid cracking of glass products due to local temperature differences, while achieving phase separation and crystallization of microcrystalline glass through multi temperature zone control.
Nanomaterial synthesis
Chemical Vapor Deposition (CVD): In a multi zone rotary furnace, precise matching of reactant decomposition and deposition is achieved through zone temperature control. For example, high-purity polycrystalline silicon with a purity of over 99.9999% can be prepared by reducing SiHCl ∝ in the temperature range of 1100 ℃.
Nanoparticle morphology control: Optimizing the particle size distribution and morphology of nanoparticles through the synergistic effect of rotational motion and temperature gradient. For example, controlling the rotation speed can prepare spherical or sheet-like nano zinc oxide.
Powder metallurgy and metal structural materials
Metal powder sintering: gradient densification of metal powder is achieved through multi temperature zone control in an inert atmosphere. For example, titanium aluminum alloy castings are sintered in the 1400 ℃ temperature range to avoid cracking caused by uneven temperature in traditional furnaces.
Quenching of metal parts: Utilizing the rapid heating capability of a rotary furnace and combining multi temperature zone design to achieve segmented quenching of metal parts, improving material hardness and toughness.

2. In the field of new energy
Preparation of lithium battery materials
Sintering of positive and negative electrode materials: The multi temperature zone rotary furnace can simulate the sintering curve of lithium battery materials such as lithium iron phosphate and ternary materials. For example, in an oxygen atmosphere, the ordered growth of layered structures of ternary materials is achieved through a temperature range of 1200 ℃, and the initial charge discharge efficiency is increased to 92%.
Solid state electrolyte sintering: Utilizing high-temperature uniformity, densification of sulfide solid electrolytes is achieved in the 1500 ℃ temperature range, reducing interfacial impedance.
Fuel cells and hydrogen energy materials
Catalyst evaluation: Gradient reduction and activation of catalysts are achieved through multi temperature zone control in a reducing atmosphere. For example, the ternary catalyst for automobile exhaust completes the dispersion of precious metal particles in the 800 ℃ temperature range, enhancing catalytic activity.
Synthesis of hydrogen storage materials: Utilizing the dynamic heating characteristics of a rotary furnace to optimize the phase transition process of hydrogen storage alloys. For example, LaNi ₅ alloy achieves uniform synthesis of hydrides in the 900 ℃ temperature range.

3. Metallurgy and Chemical Industry
Metal mineral processing
Direct reduction of iron ore: In a multi temperature zone rotary furnace, iron ore is reduced to sponge iron by controlling temperature and atmosphere. For example, at a temperature range of 1000 ℃, the reduction rate of iron ore can reach over 90%.
Copper ore roasting: Utilizing multi temperature zone design to achieve gradient oxidation of copper concentrate, converting copper sulfide into copper oxide for subsequent wet copper extraction.
Chemical raw material conversion
Sodium bicarbonate decomposition: At a temperature range of 500 ℃, sodium bicarbonate decomposes into pure alkali (sodium carbonate) with a purity of over 99%. It is widely used in the glass and paper industries.
Ammonium chloride thermal decomposition: By controlling multiple temperature zones, ammonium chloride is decomposed into hydrogen chloride and ammonia gas, achieving resource recovery and pollution reduction.

4. Environmental Protection and Waste Management
Hazardous waste disposal
Medical waste incineration: Under a temperature range of 1200 ℃, harmless treatment of medical waste is achieved by controlling the atmosphere and residence time, with dioxin emission concentration below 0.1ng-TEQ/m ³.
Chemical waste solidification: Utilizing the high-temperature uniformity of a multi zone rotary furnace, heavy metal waste is solidified into a stable body, with lead and cadmium leaching toxicity below 0.05mg/L.
Sludge resource utilization
Sludge pyrolysis: In the temperature range of 500-800 ℃, multi-stage temperature control is used to achieve three-phase separation of oil, gas, and carbon in sludge, and the pyrolysis oil yield can reach over 20%.
Sludge incineration power generation: Utilizing the continuous feeding characteristics of the rotary furnace, efficient incineration of sludge is achieved, with a heat recovery rate of up to 70%.