Green Energy Quick Lime Production Line for Steel Plant Made in
China
Introduction:
Quick lime production line refers to the whole process of quick lime manufacturing. During
all the lime production process, the rotary kiln production process
is the most advanced one. Our production process adopt the rotary
kiln with the vertical preheater and vertical cooler for the
limestone calcination to achieve the production requirements of
energy saving, environmental protection, the high activity.
Process Flow of Lime Production Line:
Step One: Raw Material Preparation
1. Limestone: The particle size of limestone should be between
10～40mm. The proportion of limestone size above 40mm or below 10mm
should not be more than 5%. The maximum size should be less than
40mm.
2. Fuel:Furnace gas, gas, coalbed methane, pulverized coal could be
used as fuel.
Step Two: Raw Material Feeding
Limestone in the plant yard will be carried by tractor shovel and
fed to hopper, it will be discharged from hopper to vibrating
feeder and sent to vibrating screen for screening through belt
conveyor. The size ≥20mm will be sent to pre-heater by conveyor.
And size less < 20mm will be carried away.
Step Three: Limestone Calcination
Limestone in the pre-heater will be preheated by the hot air, then
it will be discharged to rotary kiln through 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
temperature around 1300 ℃, after which comes limestone
decomposition and release of co2,then the for mation of quick lime
qill be completed.
Step Four: Finished Products Conveying
Lime will be discharged to a chain conveyor by vibrating feeders in
the bottom of vertical cooler, it will be lifted to lime in the
storage hopper can be used for dispatch or transported to the
hydration workshop.
Step Five: Dust Filtering System
There are two dust filtering systems, one is in the kiln inlet,
dust will be filtered by bag filter then the clean gas will be
released to air. The other is dust from lime storage hopper and the
feeding part of bucket elevator, dust will be filtered by bags and
then released to air.
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 |
