Small Scale Horizontal Rotary Kiln Lime Production Plant
Lime rotary kiln Introduction
The limestone is preheated by the high-temperature flue gas of the
preheater and enters the rotary kiln body through the transfer
chute. The fuel is injected into the kiln body from the kiln head
by the burner for combustion. Due to the inclination and slow
rotation of the rotary kiln cylinder, the material rolls along the
cylinder and moves toward the lower end of the kiln head. After
further preheating, decomposition, high temperature firing and
other processes in the kiln, it is calcined into quicklime, and
then enters the vertical cooler from the lower part of the kiln
head discharge device.
The lime rotary kiln is mainly composed of a transmission device, a
supporting device of supporting roller, supporting device of catch
wheel, cylinder, kiln head, kiln tail and a sealing device.
Specifications:
| Capacity | 200t/d | 225t/d | 250t/d | 300t/d | 400t/d | 500t/d | 600t/d | 800t/d |
| Preheater | Shape | Hexagon | Hexagon | Octagon | Octagon | Octagon | Decagon | Dodecagon | Dodecagon |
Qty. Of Top Silo | 6 | 6 | 8 | 8 | 8 | 10 | 12 | 12 |
| Qty. Of Hydraulic Pusher | 6 | 6 | 8 | 8 | 8 | 10 | 12 | 12 |
| Preheating Capacity (t) | 600 | 600 | 800 | 800 | 800 | 1000 | 1600 | 1600 |
| Rotary Kiln | Size | Φ2.8×42m | Φ3.0×50m | Φ3.2×50m | Φ3.3×55m | Φ3.6×55m | Φ3.8×58m | Φ4×60m | Φ4.3×56m |
| Slope | 3.50% | 3.50% | 3.50% | 3.50% | 3.50% | 3.50% | 3.50% | 3.50% |
Rotating Speed (r/min) | 0.3-1.8 | 0.3-1.8 | 0.3-1.8 | 0.3-1.8 | 0.3-1.8 | 0.3-1.8 | 0.3-1.8 | 0.3-1.8 |
Calcination Temperature (℃) | 1350 | 1350 | 1350 | 1350 | 1350 | 1350 | 1350 | 1350 |
| Cooler | Type | Vertical | Vertical | Vertical | Vertical | Vertical | Vertical | Vertical | Vertical |
| Qty Of Temperature Control Area | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Qty. Of Wind Tower | 4+1 | 4+1 | 4+1 | 4+1 | 4+1 | 4+1 | 4+1 | 4+1 |
| Size(m) | 3.6×3.6 | 3.6×3.6 | 3.6×3.6 | 3.6×3.6 | 4.1×4.1 | 4.1×4.1 | 4.1×4.1 | 4.7×4.7 |
Output Temperature (℃) | ≤120 | ≤120 | ≤120 | ≤120 | ≤120 | ≤120 | ≤120 | ≤120 |
| Product Thermal Loss(kcal/kg) | 5500 | 5400 | 5400 | 5400 | 5400 | 5400 | 5400 | 5000 |
| Available Fuel | Coke oven gas, mixed gas, natural gas, coal powder, low heating
value coal gas |
Supporting device: The supporting device plays a supporting role on
the cylinder. There is a certain gap between the wheel belt and the
cylinder pad to ensure that the belt is tightly clamped on the
cylinder after thermal expansion. During maintenance, the plate can
be pulled out and replaced with a new pad, which is convenient for
maintenance and simple in operation.
Transmission device: The transmission system adopts frequency
conversion speed regulation motor, and the speed regulation range
is large, so as to increase capacity. The auxiliary transmission
mechanism is composed of an oil extractor and a reducer, etc., The
cylinder body of the rotary kiln can be operated normally in the
case of power failure, to prevent the cylinder body from being
deformed under the condition of sudden power failure, and is
beneficial to the repair and maintenance of the rotary kiln.
Sealing device: heat-resistant steel and heat-resistant steel
flakes are used for sealing to reduce the air leakage of the kiln
head and kiln tail. In order to ensure the sealing effect, the
scales should be regularly inspected for wear, adjusted and
replaced in time to ensure that the scales and cylinder friction
ring are tightly fitted.
Cylinder kiln head guard: The cylinder kiln head is made of
heat-resistant cast iron, which can withstand high temperature
around 800 ℃, with strong heat resistance and long service life.
