Zambia is an African country rich in mineral resources. And the cement, a crucial raw material for construction and infrastructure development, plays a significant role in the nation's development. However, the traditional cement production processes has a bad impact on the environment and consume a large amount of resource. In order to improve the efficiency and environmental friendliness of cement production, a company in Zambia has introduced a new type of dry production technology. They constructed a daily output of 1,200 tons per day new dry cement production line. The annual production capacity will be 372,000 tons of cement clinker and 558,000 tons of cement.
| NO. | Project Name | Specifications | Amount | Capacity(t/h) | machine installation(kW) |
| 1 | Limestone Crushing | Single-stage hammer crusher Maximum feeding particle size: ≤ 1000x1000mm Discharging particle size: ≤ 70mm | 1 | 180~250 | 315 |
| 2 | Auxiliary Crushing | Hammer crusher feed particle size: ≤ 600mm Discharge particle size: 90% ≤ 25mm | 1 | 80 | 132 |
| 3 | Limestone pre-homogenized yard | Conveyor belt | 11 | 300200 | 5065 |
| 4 | Raw coal crushing | Hammer-type Crusher Feed Size: ≤ 300mm Discharge particle size: 90% ≤ 25mm | 1 | 70 | 55 |
| 5 | Exhaust gas treatment | Roller mill feed particle size: ≤ 70mmDischarge fineness: 80μm, with 12% remaining on the sieveFeed moisture: ≤ 3%Discharge moisture: ≤ 0.5% | 1 | 120 | 1400 |
| Raw material mill recirculation fan handling air volume: 220,000 m3/h Inlet negative pressure: 10,000 Pa Air temperature: 90℃ (Max).250℃ | 1 | 900 | |||
| Inlet Negative Pressure: 7500PaOperating Temperature: 300 to 350°C | 1 | 630 | |||
| kiln Tail Handling Air Volume: 230,000 m3/h Flue Gas Temperature: ≤ 200℃ Net Filtration Air Velocity: ≤ 0.95 m/min Inlet Dust Content: ≤ 100 g/Nm3 Outlet Dust Content: ≤ 30 mg/Nm3. | 1 | ||||
| Exhaust Fan for Tail Gas Treatment:Air Volume: 250,000 m3/h Inlet Negative Pressure: 2000 PaOperating Temperature: Up to 180°C | 1 | 200 | |||
| 6 | Clinker burning system | C1 Cyclone：1-Æ5450C2Æ5450C31-Æ5450C41-Æ5700C51-Æ5700 Disintegration FurnaceÆ 4600×27500 | 1 | 1200t/d | |
| Spec：Ø 3.3×50m Rotation Speed：0.36-3.57 r/min | 1 | 1200t/d | 160 | ||
| Grate cooler spec:2.8×15.3m | 1 | 1200t/d | 45+37 | ||
| Conveyor | 1 | 75 | 30 | ||
| Kiln head electric dust collector processing air volume: 160,000m3/h Flue gas temperature：200～250℃ | 1 | ||||
| Kiln head exhaust fan air volume: 165000m3/h Air pressure: 1860Pa | 1 | 110 | |||
| 7 | Coal Powder Preparation and Conveyance | Air-swept grinding:Æ2.8×(5.75+2.25)m | 1 | 15 | 500 |
| Net filtration air velocity: ≤ 0.9m/min Dust content at the outlet: ≤ 30mg/Nm3 | 1 | ||||
| Coal mill exhaust fan airflow: 43,000 m3/h Pressure: 7,000 Pa | 1 | 132 | |||
| 8 | Grinding and Conveying of Cement | Cement mill Spec: F3.2×13m | 1 | 50 | 1600 |
| Air Volume Handling Capacity: 90,000 m3/hFeeding Capacity: 225 t/hProduct Fineness: 3200~3600 cm2/g | 1 | 60~100 | 110 | ||
| Net filtering air velocity: ≤ 1 m/minOutlet dust content: ≤ 30 mg/Nm3 | 1 | ||||
| Cement mill exhaust fan airflow: 109,000 m3/hStatic pressure: 7,500 Pa | 1 | 315 | |||
| 9 | Gypsum crushing | Jaw crusher feed size: ≤ 600mmDischarge fineness: 90%≤ 25mm | 1 | 10~45 | 22 |
| 10 | Cement packaging | Eight nozzles rotary packaging machine |
In the world of industrial manufacturing, rotary kilns are indispensable tools for various processes, including cement production, metallurgy, and chemical processing. These roatry furnaces are…
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