| Customization: | Available |
|---|---|
| Application: | Construction |
| Certification: | CE, ISO |
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Description of New Type Dry Process Cement Production Line:
This new type dry process cement production line is a kind of process mainly used for small, medium and large-scale cement plants. Its preheater employs outside kiln precalciner. Capable of utilizing the waste heat from kiln inlet to decompose raw meal, this line is good at saving electricity and heat. Its closed production line makes it possible to reduce its ambient dust pollution to less than 50mg/Nm3. Besides, its capacity to make use waste heat makes it quite cost efficient for users.
Here in Jiangsu Pengfei Group Co., Ltd, we offer one-stop service for you, including designing, building, suitable equipment providing, installing and debugging, technical serving, and overall contracting. And we have successfully finished the construction of cement production lines of 6000t/d, 5000t/d, 3000t/d, 2500t/d, 1500t/d, and 600t/d.
Production Flow of New Type Dry Process Cement Production Line:
1. Crushing and Pre-homogenizing:
Most of the raw materials, like limestone, clay, iron ores, and coal, should be crushed before their pre-homogenization. Limestone is the primary material in this line, and due to its large particle size and high hardness, its good crushing plays an important role in the whole line. Special stacking and reclaiming technology has been used in the pre-homogenizing process so that raw materials can be better primarily homogenized.
2. Raw Meal Preparing:
Since the raw meal grinding work takes up more than 30% labor force in the whole dry process cement production line, it is quite important to choose appropriate grinding equipment and technological process so that high-quality products can be obtained.
3. Raw Meal Homogenizing:
The raw meal homogenization is a key factor for stable clinker calcination.
4. Preheating and Decomposing:
The preheater is used to preheat as well as decompose raw meal. So the length of the rotary kiln is effectively shortened. And the raw meal can fully exchange heat with the hot gases from the kiln. Because of its rapid and high-efficiency heat transfer, the production efficiency and heat consumption of this production line are greatly improved.
5. Clinker Calcining:
After its preheating and pre-decomposing, the raw meal will be calcined in the rotary kiln, where the generated carbonate will be further decomposed. Meanwhile, a series of solid phase reactions will take place.
6. Cement Grinding:
As the last process, the cement grinding will consume a great deal of electricity. And in this process, special size granule cement will be obtained.
7. Cement Packaging:
The cement can be transported in bulk or in bags.
List of main equipment
| No | Project | Title, norm and technical performance | Capacity(t/h) | Vol. | Remark |
| 1 | Limestone crushing | heavy duty plate feeder norm: B2300×10000 grain size:1100×1100×1150mm power:55 kW |
80-800 | 1 | |
| single-stage hammer crusher norm:PCF-2022 grain size: 1000×1000×1500mm Product size: <75 (90%) power:800 kW |
600 | 1 | |||
| 2 | Limestone pre-blending storage | Pre-blending norm:YDG90/800/1200 Beam stacker Scrape reclaimer power:210 kW |
1000 800 |
1 | |
| 4 | Auxiliary materials Crushing |
single-stage hammer crusher model no:NPG1414 maximum feed grain size: 600×400×400mm discharge grain size(residue 20%):≤50mm power:2×132kW |
200 | 1 | |
| 5 | United pre-lending | Side scraper charger :GQ130 power:75 kW |
130 | 2 | |
| 6 | Raw mill | Vertical roller mill norm: feed moisture:≤10% feed grain size:≤80mm discharge moisture:≤0.5% discharge grain size:0.08mm residue≤14% motor power:3550kW |
320 | 1 | |
| Recirculating fan Model: Volume:780000 m3/h Full pressure: 10500 Pa Motor power:3150KW |
1 | ||||
| 7 | kiln inlet | 5-stage cyclone preheater and calciner Model: KSF5000 C1: 4-φ4500mm C2: 2-φ6500mm C3: 2-φ6500mm C4: 2-φ6900mm C5: 2-φ6900mm Calciner: φ7500mm |
166.67 | 1 | |
| High-temperature fan (with governing fluid coupling) Model: Volume: 780000 m3/h Full pressure: 7200Pa Gas temperature: 350ºC(Max. 450ºC) Motor power:2350KW |
1 | ||||
| Waste gas treatment | Bag dust-collector Specification: Handling blast volume: 780000m3/h Smoke and gas temp.: 150ºC (Max. 260ºC) Inlet dust density: 50g/Nm3 Outlet dust density: <30mg/Nm3 |
1 | |||
| Conditioning tower Specification: Φ9.5×39m Volume: 780000m3/h Inlet air temp.: <450ºC Outlet air temp.: <150ºC Water-spraying volume: 35m3/h |
1 | ||||
| Waste gas fan Model: Volume: 780000 m3/h Full pressure: 3100Pa Gas temperature: Motor power:1000KW |
1 | ||||
| 8 | Kiln | rotary kiln: Φ4.8×72m grade:3.5% rev: 0.398~3.981r/min motor power: 630kW(DC) |
166.67 | 1 | |
| 9 | Kiln outlet clinker cooling | Grate cooler Model: KC4000 Inlet temp.: 1371 ºC Discharging temp.: Ambient temp.: +65ºC |
166.67 | 1 | |
| 10 | Kiln outlet waste gas treatment | Heat exchanger Handling blast volume: 550000m3/h Smoke and gas temp.: 260ºC (Max. 350ºC),exit temp:130ºC (Max. 200ºC) |
1 | ||
| Bag Filter Specification: Handling blast volume: 550000m3/h Smoke and gas temp.: 150ºC (Max. 200ºC) Inlet dust density: 50g/Nm3 Outlet dust density: <50mg/Nm3 |
1 | ||||
| Waste gas fan Model: Volume:550000 m3/h Full pressure: 3100Pa Motor power:800KW |
1 | ||||
| 11 | cement mill | Roller press roller diameter:1700mm roller width:1000mm feed size:95%≤35 product temperature:≤90ºC motor power:2×900kW |
2 | ||
| cement mill: Ф4.2×14.5m feed grain size:≤25mm product fineness: specific are:3500cm2/g (Type I) host motor power: 4000kW |
120 | 2 | Type I 42.5 | ||
| separator: O-Sepa N4000 motor power:200kW |
2 | ||||
| bag filter capacity: 260000m3/h Outlet dust density: <30mg/Nm3 |
2 | ||||
| gas fan Model: Volume:286000 m3/h Full pressure: 5800Pa Motor power:710KW |
2 | ||||
| 12 | Gypsum & limestone crushing | hammer crusher model no: PCF-1412 rotor working disc size: maximum grain size: 600×600×900mm discharge grain size :≤25 mm rotor rev: r/min motor power:190 kW |
80-130 | 1 | |
| 13 | Cement packing | eight-mouthed rotary packing machine computation fineness: +0.5kg -0.2kg motor power:36kW |
90~100 | 4 | |
| 14 | Air compressing station | screw air-boosting compressor discharge capacity: 27m3/min discharge pressure: 0.85MPa motor power: 160kW |
8 |
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