Lime rotary kiln
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Product Details
Product Introduction
The rotary kiln for lime is a new type of rotary kiln specially designed for active lime, based on the characteristics of limestone calcination and drawing on the experience of similar rotary kilns at home and abroad. This type of rotary kiln (optional vertical preheater and vertical cooler can be configured to form an energy-saving rotary kiln calcination system) has the characteristics of high raw material utilization rate, complete calcination, uniform quality, good quality, large production capacity, high operating rate, energy saving and environmental protection, simple operation, and long service life of the whole machine.
Application Fields
Suitable for calcination of limestone in metallurgical, chemical and building materials industries.
Outstanding Advantages
1. Stable output of rotary kiln, suitable for large, medium and small active lime production lines
2. Simple kiln structure, uniform heating, stable product quality, low under-burning and over-burning rate
3. High raw material utilization rate, uniform quality, good quality, large production capacity
4. The vertical cooler configured at the kiln head can not only quench the high-temperature lime suddenly, but also improve the activity of the product
Working Principle
Dolomite is fed into the kiln through the kiln tail (high-end) chute. Due to the inclination and slow rotation of the cylinder, the dolomite rolls along the circumference while moving from the kiln tail (high-end) to the kiln head (low-end) along the axial direction; the fuel is sprayed into the kiln from the kiln head through the burner for combustion, and the heat is transferred to the dolomite in various ways such as radiation, convection, and conduction. The dolomite undergoes preheating, decomposition, and calcination in the kiln to be calcined into calcined dolomite, and then unloaded from the kiln head device.
Technical Parameters
| Production Capacity (t/d) | 150 | 200 | 250 | 300 | 350 | 400 | 500 | 600 | 800 | 1000 | 1200 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Main Equipment | Main Supporting Equipment Model and Technical and Economic Indicators | ||||||||||
| Vertical Preheater | YRQ04 | YRQ06 | YRQ06 | YRQ08 | YRQ08 | YRQ10 | YRQ12 | YRQ12 | YRQ14 | YRQ18 | YRQ20 |
| Rotary Kiln | φ2.5×40m | φ2.8×43m | φ3.0×48m | φ3.2×50m | φ3.3×52m | φ3.6×55m | φ3.8×58m | φ4.0×60m | φ4.3×65m | φ4.9×70m | φ5.1×72m |
| Vertical Cooler | LSF36 | LSF44 | LSF56 | LSF80 | LSF112 | ||||||
| Calcination Temperature /℃ | 1100±50 | ||||||||||
| Energy Consumption Index /(kCal/kg) | 1200±100 | ≤1150 | ≤1100 | ||||||||
| Power Consumption Index /(kW·h/t) | 40±5 | ||||||||||
| Limestone: Lime | 1.7~1.78:1 | ||||||||||
| Lime Under-burning and Over-burning Rate /% | ≤5 | ||||||||||
| Lime Activity /ml | ≥340 (Specific to the composition of limestone) | ||||||||||
| Discharge Temperature /℃ | Ambient Temperature +60 | ||||||||||
| Limestone Particle Size into Kiln /mm | 10~20/20~40 | ||||||||||
| Emission Concentration /(mg/Nm3) | ≤10 | ||||||||||
| Annual Working Days / Days | ≥340 | ||||||||||
| Overhaul Cycle / Year | 1~3 | ||||||||||
| Number of Operators /(Person/Shift) | 2~3 | ||||||||||
| Applicable Fuels | Coal powder, coke oven gas, semi-coke oven gas, converter gas, blast furnace gas, calcium carbide furnace gas, natural gas, diesel, heavy oil, liquefied petroleum gas, biomass fuel | ||||||||||
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No.99 Hengshan Road, Jianxi District, Luoyang City, Henan Province
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