Heavy-Duty Industrial Rotary Kiln Manufacturer
High-performance, large-scale industrial rotary kilns engineered for continuous high-temperature calcination, sintering, and pyro-processing operations. Achieve exceptional thermal efficiency with robust structural reliability.
Φ1.2 - Φ4.5m
Kiln Diameter
Up to 1450°C
Operating Temp
1 - 150 t/h
Output Capacity
Working Principle
What Is A Rotary Kiln?
A rotary kiln (also known as a rotary calciner or pyro-processing drum) is a massive thermal processing equipment used to raise materials to a high temperature in a continuous industrial operation. Featuring a slightly inclined cylindrical shell that rotates slowly around its axis, it efficiently transfers heat to raw chemical compounds, mineral ores, or waste aggregates to induce a chemical reaction or physical change.
Zhonghui Machinery configurations are perfectly optimized for calcining cement clinker, active lime, and roasting metallic minerals.
Ideal Applications & Thermal Processing Materials:
Cement & Lime Processing: High-efficiency calcination of active lime, cement clinker, dolomite, and bauxite.
Metallurgy & Mineral Roasting: Reduction roasting of iron ore, zinc oxide, nickel laterite ore, and chromium.
Environmental & Chemical Recycling: Thermal treatment of industrial hazardous waste, sludge drying, oil shale extraction, and petroleum coke calcining.
Working Process
How Does a Rotary Kiln Work?
Advanced counter-current heat transfer mechanism achieving complete calcination.
Our Advantages
WHY CHOOSE OUR ROTARY KILN
Advanced pyro-processing structures engineered for maximum thermal distribution and absolute shell longevity.
Advanced Dynamic Seal
Negative pressure operation prevents any dust leakage.
Premium Thermal Efficiency
Optimized heat distribution reduces fuel energy consumption.
Reinforced Steel Shell
Exceptional structural rigidity and fatigue-free heavy rotation.
Variable Speed Drive
Flexible speed adjustment ensures precise aggregate retention.
Intelligent Temperature Control
Real-time PLC monitoring for uniform mineral calcination.
Extended Service Lifespan
High-strength refractory lining components minimize routine maintenance.
Technical Specifications
Rotary Kiln Models & Specifications
Review our field-proven heavy-duty rotary drum kiln model configurations for cement, lime, and mineral processing.
| Model Spec (m) | Kiln Inclination (%) | Shell Speed (r/min) | Capacity (t/h) | Motor Power (kW) | Total Weight (t) |
|---|---|---|---|---|---|
| Φ1.2 × 24 | 3.5 – 4.0 | 0.58 – 1.8 | 1.0 – 2.5 | 18.5 | 32.5 |
| Φ1.6 × 32 | 3.5 – 4.0 | 0.41 – 2.1 | 2.5 – 5.0 | 30 | 51.2 |
| Φ2.2 × 45 | 3.5 – 4.0 | 0.48 – 2.4 | 8.0 – 15.0 | 55 | 118.0 |
| Φ2.5 × 60 | 3.5 – 4.0 | 0.51 – 2.5 | 15.0 – 30.0 | 75 | 169.5 |
| Φ3.0 × 60 | 3.5 – 4.0 | 0.45 – 3.0 | 30.0 – 65.0 | 125 | 275.0 |
| Φ4.0 × 60 | 3.5 – 4.0 | 0.35 – 3.5 | 70.0 – 150.0 | 315 | 510.0 |
FREQUENTLY ASKED QUESTIONS
EVERYTHING YOU NEED TO KNOW
Find expert answers to the most common questions about our industrial rotary kilns, including thermal refractory setup, fuel configuration, and factory customization options.
Q1: What fuels can be used to heat your industrial rotary kilns?
A: Our rotary kilns feature highly versatile, customizable multi-fuel burner systems. They can operate efficiently using pulverized coal, natural gas, heavy crude oil, diesel fuel, or specialized waste gas solutions, depending on your plant’s cheapest local energy source.
Q2: How do you prevent dust and gas leakage at the kiln joints?
A: We design our kilns with advanced, patented multi-layer composite mechanical and flexible graphite radial block seal rings at both the kiln head and kiln tail. This dynamic configuration ensures robust negative-pressure running, preventing raw powder or gas leakage.
Q3: What determines the selection of the internal refractory lining?
A: The choice of internal refractory insulation brick depends strictly on your processing material chemistry and maximum calcination temp. We configuration premium alumina bricks, magnesia-chrome bricks, or customized castables to protect the steel shell from temperatures up to 1450°C.
Q4: How does a rotary kiln manage thermal expansion during operation?
A: The massive structural steel shell is supported by precision riding rings (tyres) resting on heavy rolling support rollers. The axle alignment incorporates high-accuracy hydraulic thrust roller stations to monitor and control axial movement from thermal expansion smoothly.
Q5: Can this rotary kiln be used for industrial hazardous waste recycling?
A: Yes. Our kilns are highly applicable for waste incineration and recycling, offering exceptionally long retention times and extreme internal temperatures to break down toxic hazardous compounds completely.
Q6: Do you supply the matching preheaters and rotary cooling drums?
A: Yes, absolutely. Zhonghui Machinery provides complete turnkey production line project engineering. We custom build vertical preheaters, dust collection systems (baghouse filters), cyclones, and grate or rotary coolers to match your production layout.
Q7: What is the delivery timeframe for a heavy-duty rotary kiln project?
A: Due to the large scale of structural engineering and custom machining required for shell segments and girth gears, manufacturing ranges from 45 to 60 calendar days following drawing sign-off.
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