Natural Gas Energy Saving Shaft Lime Kiln

i) Description
The limestone in the pre-heater will be preheated by the hot air, then it will be discharged to rotary kiln
though chute that connecting pre-heater and kiln, it will stay in the kiln for 1.5-2 hours for calcination,
during the process, it will be calcinated with a temperature around 1300 ºC, limestone decomposition,
release of CO2, become quicklime. Then the lime moves to vertical cooler for cooling.

The successful industry application of environment-friendly, energy-saving active lime stone with
vertical preheated and vertical cooler breaks traditional pattern of lime production. Due to reduction
of fuel consumption significantly and reducing exhaust emissions, coupled with the adoption of
pulse-packs dust-catcher purify exhaust, not only makes production cost and the energy consumption
greatly reduced, but also the calcinations process of emission slandered, environmental condition is
kept substantially.
ii) The process advantage
The calcination process adopts pre-heater+ rotary kiln+ vertical cooler system, , it can reduce the fuel
consumption 40%, increase output capacity 30% due to reuse the waste gas in the system. The other
advantages are in the following:
1)The lime quality is very good and high activity.
2)It is especially suitable for large-scale lime production.
3)The production running is stable, the whole process using negative pressure, air flow freely and high
production safety
4)Using the bag filter system, it can reduce the exhaust gas less than 50mg/Nm3
5)It shorten kiln length, reduce heat loss and area.
6)Cooler and kiln hood cover designed together, good seal, saving area.
 Burning system
a.Coal powder grinding system