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[China]
Trade Verify
Address: 15th Fl, Bldg No.13, National University Science Park(East), No.279, West 3# Ring Rd, Zhengzhou, China
Contact name:Andrew
Henan Zhengzhou Mining Machinery CO.Ltd |
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Verified Suppliers
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Whole Set Equipment Lime Manufacturing Hydration Plant Project
Overview of Quick Lime Production
Active lime is produced from limestone, dolomite, chalk and other
minerals with high calcium carbonate content by the calcination
process under the temperature of 1000-1100 ° C. There are various
processes for the active lime production, mainly including:
Advanced 'Preheater-Rotary kiln-Vertical cooler' energy-saving
process, Traditional 'long rotary lime kiln' process, Mixed buring
vertical kiln process, Gas-fired or oil-fired vertical kiln process.
The selection of the active lime process is effected by many
factors, such as : the activity requirement, the fuel, the
limestone sizes, production capacity, environmental-protection
requirement.
The equipments of lime production line:
1. Raw Material grinding equipment,ball mill
The Raw material need to be grinded to a certain fineness,in order
to be match the next step.
2. Limestone Calcination equipment,rotary kiln
The limestone calcining system is mainly made up of vertical
preheater, rotary kiln and vertical cooler whose output is 600t/d
and heat consumption of 5.75GJ/t. In the preheater limestone is
heated by high-temperature air to 600-800°C, at which temperature
limestone can be partly decomposed. This will increase the work
efficiency of rotary kiln and reduce the cost. Then the limestone
will be sent into the rotary kiln, where it will undergo
high-temperature calcination before sent to the vertical cooler.
The processed lime will be cooled down with cold air to 65°C. Air
from the vertical cooler enters into the rotary kiln as the second
air to take part in calcining process.
3. Finished Product Conveying
The final lime will be sent to the silo as final products by bucket
elevator. After screening, qualified lime whose particle size is
bigger than 5mm will be sent to storage for active lime, while
powder lime whose size is smaller than 5mm will be sent to storage
bin for powder.
Production Process
| 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 | ||||||||
