Application fields of industrial multi temperature zone rotary furnace

The industrial multi temperature zone rotary furnace, with its dynamic heating and multi temperature zone independent temperature control technology, achieves efficient heat treatment in multiple fields. Its core application areas and typical scenarios are as follows:

1. In the field of new energy materials
Preparation of lithium battery materials
Positive electrode material: Ternary precursors (such as NCM and NCA) undergo crystal transformation in a rotary furnace, and the ordered growth of layered structures is achieved through multi temperature zone temperature control (± 5 ℃ accuracy), improving the efficiency of initial charge and discharge.
Negative electrode material: In the preparation of silicon carbon negative electrode, the expansion of silicon particles is controlled in multiple temperature zones, resulting in higher initial efficiency.
Solid electrolyte: Sulfide or oxide based solid electrolytes are synthesized through segmented temperature control, with high ionic conductivity to meet the requirements of solid-state batteries.
Purification of photovoltaic materials
Polycrystalline silicon purification: SiHCl ∝ is reduced by vapor deposition process at 1100 ℃ to improve purity and meet semiconductor grade requirements.

2. Metallurgical industry
Iron ore reduction
Direct Reduction (DRI process): Under a CO/H ₂ reducing atmosphere, the metallization rate is higher, replacing traditional blast furnace ironmaking and reducing carbon emissions.
Processing of laterite nickel ore: The nickel recovery rate is higher at 800-1000 ℃, and the cobalt leaching rate is improved, achieving efficient resource utilization.
Scrap steel recycling
Scrap steel and scrap iron smelting: High temperature molten iron is produced through high-pressure oxygen combustion, and alloy elements such as manganese and chromium are added to produce high-quality steel and improve resource recycling efficiency.

3. Chemical industry
Catalyst preparation
Porous carriers (such as alumina and silica) achieve high specific surface area and enhance catalytic activity through multi temperature zone temperature control.
Titanium dioxide production: The conversion rate of rutile type is high, and the particle size D50 is controlled at a certain value to meet the demand for high-end coatings.
Petroleum coke calcination: increases the true density, improves the performance of electrode materials, and is applied to the negative electrode of lithium-ion batteries or aluminum electrolysis cells.

4. Environmental protection field
hazardous waste treatment
Medical waste incineration: At a high temperature of 1100 ℃, dioxin emissions are lower, meeting standards and achieving harmless treatment.
Fly ash melting: adding silicon aluminum mineralizer to form stable calcium iron structure at 1200 ℃, with higher solidification rate of heavy metals.
soil remediation
The removal rate of polycyclic aromatic hydrocarbons (PAHs) is higher, and by decomposing organic pollutants at high temperatures, soil ecological functions can be restored.

5. Building materials industry
Cement clinker burning
The thermal efficiency of modern pre decomposition kiln systems has been improved, and the heat consumption per kilogram of clinker in the production line has been reduced, which is lower than traditional processes.
Ceramic expansion process: precise control of sintering temperature between 1150-1250 ℃, higher expansion ratio of shale, and production of lightweight aggregates.
Lime production
Limestone calcination: Through dynamic heating, uniform decomposition is achieved, and the activity of quicklime is increased to meet the needs of industries such as steel and chemical.

6. Emerging application areas
Special glass manufacturing
Melting of high borosilicate glass: controlling the uniformity of glass liquid in multiple temperature zones to improve heat shock resistance, applied in photovoltaic module packaging.
3D Printing Material Preprocessing
Drying and Deoxygenation of Metal Powder: Removing moisture and oxides through segmented temperature control to improve powder flowability and printing quality.
Technological advantages support application expansion
Temperature uniformity: Dynamic rotation causes the material to continuously roll, eliminating local overheating, and the temperature field accuracy is within ± 5 ℃.
Process adaptability: By adjusting the number of temperature zones, temperature curves, and furnace rotation speed, it can adapt to the heat treatment requirements of different materials.
Continuous operation capability: Materials are continuously added from one end and discharged from the other end, achieving 24-hour uninterrupted production and improving production capacity.
Energy saving and environmental protection: Oxygen enriched combustion technology reduces fuel consumption, and waste heat recovery system improves energy utilization efficiency.