Industry Reports
Calcium Carbonate Rotary Kiln Manufacture
The limestone is be warmed to 900℃ in 1500℃ preheater by the exhaust gas. They are pushed to the rotary kiln by hydraulic push rods. CaO and CO2 are generated in the calcining zone. The decomposed limestone fed to the cooling machine, in which they are cool down to 100℃. Then they are discharged to the vibration feeders, taken to the limestone silos via conveyor, bucket elevator and belt conveyor.
Features of the Calcium Carbonate Production Line:
Effective preheating function that 20-25% limestone is decomposed in the preheater.
Scaling seal makes sure the air leakage factor is less than 10%.
The round vertical cooling machine can make the limestone discharged at 800℃+environment temperature.
Rotary Kiln Specification
Main Equipment
| NO. | Equipment name | Specification | Type | Qty | |
| 1 | rotary kiln | Ф4.0×60m | 1 | ||
| 2 | vertical preheater | Ф10.5×8.5m | 1 | ||
| 3 | vertical cooler | 105m3 | 4.2*9m | 1 | |
| 4 | multi pipe cooling machine | dealing air：260000m3/h | 1 | ||
| 5 | High temperature exhaust fan | 900kw，10KV | 1 | ||
| 6 | coal mill system | 8-10t/h | PDM1250 | 1 | |
| 7 | gas&coal burning system | four way burner | 1 | ||
| 8 | dust collector equipment | ||||
| 8.1 | kiln tail flue dust collector | dealing air ：260000m3/h | LCMD-3660 | 1 | |
| 8.2 | coal grinding dust collector | dealing air：45000m3/h | FGM128-6(M) | 1 | |
| 8.3 | cooling dust collector | dealing air：18600m3/h | PPc64-4 | 1 | |
| 8.4 | finished product screening dust collector | dealing air：18600m3/h | PPc64-4 | 1 | |
| 9 | accessory equipment | ||||
| 9.1 | bucket elevator | NE100 | 1 | ||
| 9.2 | Circular vibrating screen | YA1536 | 1 | ||
| 9.2 | Circular vibrating screen | YA1236 | 1 | ||
| 9.4 | chain scraper conveyor | DS500 | 1 | ||
| 9.5 | belt conveyor | 6 | |||
| 10 | fan | ||||
| 10.1 | axial flow fan | 4 | |||
| 10.2 | centrifugal fan | 2 | |||
| 10.3 | coal mill fan | 1 | |||
| 10.4 | roots fan | 3 | |||
| Performance | 300t/d | 600t/d | 800t/d | 1000t/d | 1200t/d | 1500t/d | |
| Preater | Type | Lossless Partitioned Vertical | Lossless Partitioned Vertical | Lossless Partitioned Vertical | Lossless Partitioned Vertical | Lossless Partitioned Vertical | Lossless Partitioned Vertical |
| Shape | Hexagon | Dodecagon | Dodecagon | Octadecagon | Icosagon | 22 | |
| Preheat Silo | 6 | 12 | 12 | 18 | 20 | 22 | |
| Hydralic Push Rod | 6 | 12 | 12 | 18 | 20 | 22 | |
| Preheat (t) | 1200 | 1200 | 1600 | 2000 | 2400 | 3000 | |
| Rotary Kiln | Specification | Φ3.2×50m | Φ4×60m | Φ4.8×56m | Φ5.0×58m | Φ5.2×64m | Φ5.6×76m |
| Inclination | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | |
| 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 | |
| Burning T (℃) | 1350 | 1350 | 1350 | 1350 | 1350 | 1350 | |
| Cooling Machine | Type | Partitioned Vertical | Partitioned Vertical | Partitioned Vertical | Partitioned Vertical | Partitioned Vertical | Partitioned Vertical |
| Tempertuare Control Zone Number | 3 | 3 | 4 | 4 | 4 | 4 | |
| Wind Tower | 2+1 | 4+1 | 4+1 | 4+1 | 4+1 | 4+1 | |
| Specification(m) | 3.6×3.6 | 4.1×4.1 | 4.7×4.7 | 5.2×5.2 | 5.4×5.4 | 5.8×5.8 | |
| Discharged T(℃) | ≤80 | ≤80 | ≤80 | ≤80 | ≤80 | ≤80 | |
| Heat Consumption | 5400 | 5400 | 5000 | 4750 | 4600 | 4500 | |
| Fuel | Coke oven gas,Mixed gas,Natural gas,Pulverized coal, Low heat vaule gas | ||||||
