LIME ROTARY KILN

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Technical Data

Model: Φ2.2x38 - Φ5.1x72 (m)

Capacity: 50 - 1200 (t/d)

Material: Limestone, Dolomite, Kaolin, etc.

Application: Quick lime & hydrated lime plant

ADVANTAGE

1. According to the character of limestone and its calcination requirement, the structure of kiln inlet and outlet sections has been optimized. It can resolve the problem of material returning back to kiln inlet and the leakage of dust.

2. Evenly heating for limestone, low rate of less calcination and over calcination. Especially suitable for the high activity lime for steel making.

3. Technical configuration is optional: matched vertical preheater can use the high temperature from rotary kiln to preheating the limestone from room temperature to decomposition condition; matched vertical cooler can cooling down the high temperature of lime in the shortest time, and process can increase the activity of lime and also easy for transportation and storage.

INTRODUCTION

Lime rotary kiln is used to produce quicklime through the calcination of limestone (calcium carbonate). Lime rotary kiln is specialized design for production of active lime.

Our lime rotary kiln can work with vertical preheater and vertical cooler to achieve the advantages like high use ratio of raw materials, complete calcination, even quality, good quality lime, high capacity output, environmental and energy saving, simple operation and longer working life. This kiln is very suitable for limestone calcination for industries like metallurgy, chemical, construction materials and etc.

We also supply complete set of equipments for lime production line with capacity from 50 tpd to 800 tpd: rotary kiln / vertical kiln, preheater, cooler, bag filter, crusher, ball mill, conveyor, bucket elevator, vibrating feeder, etc.

SPECIFICATIONS

Capacity (t/d)	150	200	250	300	350	400	500	600	800	1000	1200
Main Equipment	Main supporting equipment models 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
Light and Over burnt Rate /%	≤5
Lime Activity /ml	≥340（depends on the composition of limestone）
Lime Discharging Temperature /℃	Ambient Temperature +60
Limestone Feeding Size /mm	10~20/20~40
Emission Concentration /（mg/Nm3）	≤10
Annual Working Day / Days	≥340
Overhaul Cycle / Year	1~3
Labor / Shift	2~3
Applicable fuel	Coal powder, Coke oven gas, Semi-coke furnace gas, Converter gas, Blast furnace gas, Calcium carbide furnace gas, Natural gas, Diesel oil, Heavy oil, Liqueﬁed petroleum gas, biomass fuel etc.

PROCESS

1. Support device: advanced shaft structure, automatic temperature measuring device and electrical heating.

2. Catch wheel: including two kinds of mechanical wheel and hydraulic pressure.

3. Gears: single or double. Control the rotating speed by variable motor, DE machine and frequency variable motor. Be reliable, energy saving and efficient.

4. Cylinder tyre bolster: lower bolster has three types: fixed, zoom and floating. The structure is simple. Replacement is convenient and won’t hurt cylinder.

5. Sealing equipment: there are many kinds to choose from according to kiln models, including air cylinder edge sealing, spring edge sealing, graphite block sealing, and a combination of the above. The feather is adaptive for cylinder rotation and swing. And the sealing effect is very good.

6. Kiln head hood: including stationary type and flexible type.

If you are interested in our product design, specification, spare parts, quotation etc, please feel free to contact us by WhatsApp +8615738871677, or email us at ec22@zkcorp.com.