Our rotary kiln is a core heat treatment equipment, widely used in cement production, metallurgy, environmental protection, and building materials industries. Its working principle involves slowly rotating a slightly inclined cylindrical kiln body to achieve continuous high-temperature treatment (800-1600℃) of materials through heat transfer (radiation, convection, and conduction). Our rotary kiln is designed in accordance with international industrial standards (such as ISO, DIN), featuring excellent high-temperature resistance, stable operational performance, and precise process control capabilities. Whether used for cement, lime clinker calcination, metal oxide roasting, hazardous waste incineration, or ceramsite production, it can provide reliable heat treatment solutions for customers worldwide, optimizing material quality and production efficiency
Core advantages
High-temperature resistant structural design
Durable kiln body: The kiln shell is made of high-quality dedicated fixed-point steel (Q345R or Q235R) with a thickness of 16-40 mm (adjusted according to the kiln diameter). The lining is made of high-alumina refractory bricks or silicon carbide bricks, which can withstand long-term high temperatures up to 1600°C. Compared with ordinary refractory materials, heat loss is reduced by 25%
Efficient sealing system: This kiln is equipped with an axial and radial combined sealing structure (using graphite packing or gas sealing technology), which can effectively prevent the entry of cold air and leakage of hot flue gas. This maintains the stability of the internal temperature field and reduces energy consumption by 10%-15%
Stable support structure: The design incorporates dual support rollers and thrust rollers, which can evenly distribute the weight of the kiln body (weighing up to 500 tons), ensuring its stable rotation even under heavy loads. The surface of the support rollers is coated with wear-resistant alloy, extending their service life to over 5 years
Precise temperature control and flexible operation
Intelligent thermal control system: This system integrates a PLC control panel, an infrared temperature sensor (with a measurement accuracy of ±5℃), and a fuel flow regulator. It supports real-time monitoring and automatic adjustment of temperature curves for different kiln sections (preheating, calcination, cooling) to accommodate varying material requirements (for example, cement clinker requires 1450-1500℃, while hazardous waste incineration requires 900-1100℃)
Multi-fuel adaptability: Compatible with various fuels such as natural gas, pulverized coal, heavy oil, and biomass particles. The optimized burner design ensures complete combustion (combustion efficiency ≥95%) and low nitrogen oxide (NOₓ) emissions, meeting global emission standards
Adjustable Rotation Speed: The rotation speed of the kiln (0.5-5 rpm) is controlled by a variable frequency motor, allowing for flexible adjustments based on the material feeding speed and processing requirements. This avoids situations of material accumulation or insufficient processing, ensuring stable product quality
Energy conservation and environmental protection
Waste heat utilization: A waste heat boiler or heat exchanger can be optionally equipped to recover heat from flue gas (temperature 300-500℃) for steam generation or heating, thereby increasing the overall thermal efficiency to 75%-85%
Low pollutant emissions: Equipped with an efficient flue gas treatment system (denitration, desulfurization, and bag filter), this system can control the dust emission concentration below 10 mg/cubic meter, the nitrogen oxide (NOx) emission concentration below 50 mg/cubic meter, and the sulfur dioxide (SO2) emission concentration below 30 mg/cubic meter, meeting the standards of the European Union CE, ISO 14001, and the United States Environmental Protection Agency (US EPA)
Key performance parameters
Processing capability
5-300 tons/hour
Kiln body (diameter × length)
1.5×20 meters – 4.8×72 meters
Operating temperature
800-1600℃​
Rotational speed (or spinning speed)
0.5-5 rpm (stepless adjustment)
Fuel type
Natural gas/pulverized coal/heavy oil/biomass
Thermal efficiency
75%-85%​
Applicable materials and scenarios
Cement industry: Calcining cement raw materials (limestone, clay, iron ore) into clinker – the core raw material for cement production. This process ensures that the clinker is sintered evenly and has stable strength (in accordance with ASTM C150 or EN 197-1 standards). ​
Metallurgical industry: Roasting metal ores (iron ore, zinc ore, nickel ore) to remove impurities (water, sulfur, carbon) or convert the ores into oxides, thus facilitating subsequent smelting processes
Environmental protection industry: Incinerate hazardous waste (industrial sludge, chemical residues, medical waste) at high temperatures (≥1100℃) to achieve harmless treatment (destruction and removal rate ≥99.99%). This technology can also be used for drying treatment of municipal solid waste (MSW) to recover energy
Building materials industry: By sintering or calcining raw materials (clay, shale, limestone), lightweight ceramsite, refractory materials, and lime are produced to meet the demand for high-performance building materials
Environmental protection and after-sales service
Ecological certification: Our rotary kiln has obtained the EU CE certification, ISO 14001 (environmental management) certification, and ISO 50001 (energy management) certification, ensuring compliance with global environmental and energy regulations
Comprehensive after-sales support: We offer a 18-month warranty period (excluding consumable parts such as refractory bricks and seals). Our services include on-site kiln installation, guidance on refractory brick laying, operator training, and annual maintenance.
Customized Solutions: Based on customer needs, we offer tailored designs, including wet/dry kilns, single/multi-chamber structures, and associated auxiliary equipment (preheaters, coolers, dust collectors). ​
Why choose our rotary kiln? ​
Our rotary kiln combines high temperature durability, precise process control, and eco-friendly performance. It addresses the pain points of traditional heat treatment, such as unstable temperature, high energy consumption, and excessive emissions. Whether you are engaged in cement production, metallurgical smelting, or environmental waste treatment, we can provide a one-stop heat treatment solution to help you improve production efficiency, reduce costs, and achieve sustainable development. For technical consultation, customized quotes, or on-site factory visits, please contact our sales team. We are committed to powering your industrial processes with high-quality rotary kiln equipment!