Cement vertical shaft kiln
Finished particle size: 80 μm R 12-15%
Capacity:30-500t/h
Materials:High-temperature sinter, limestone, sponge iron, clay, magnesia sand, sintered dolomite, etc.
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Petroleum and Gas
The vertical kiln is a vertical cement kiln, the kiln cylinder is vertical and does not rotate, and there are two types: ordinary vertical kiln and vertical kiln.
A steel cylindrical vessel with a low-speed rotating inner lining of refractory material, used for the calcination of cement clinker. It is at a certain inclination on several pairs of supporting wheels, driven by a motor or hydraulic transmission, and the cylinder rotates within a certain speed range. Raw materials are fed from the end (kiln tail) and move towards the low end (kiln head). Fuel is blown in from the low end, producing flames that burn the raw materials into cl. The exhaust gases are discharged from the kiln tail. The rotary kiln is the most important thermal equipment in the cement industry.
During the development of the cement industry different production methods and different types of rotary kilns have emerged. According to the method of raw material preparation, they can be divided into dry production and wet production, and theary kilns corresponding to the production methods can be divided into dry rotary kilns and wet rotary kilns. Due to the different heat exchange devices at the kiln head and kiln tail, they can also be divided into different types of kilns.
High yield and high performance
The cement vertical shaft kiln has a high output and is suitable for large-scale active lime production lines. For example, a cement kiln with a daily of 2200 tons of lime has been put into production, and many cement kilns with a daily output of 150~300 tons have also built at home and abroad, operating well and suitable for the application of medium and small lime enterprises.
Low sulfur content and high quality products
The cement vertical kiln belongs to open-air burning, with smooth airflow and timely discharge of sulfur-containing smoke, which is not easy to adhere to sulfur in the fuel, so the sulfur content of the product is low, meeting the requirements of steelmaking. At the same time, the material rolls evenly forward in the kiln heated evenly, with stable product quality and low burning rate.
Utilization of fine-grained limestone
The cement vertical shaft kiln can directly calcine 10~50mm fine particle grade limestone, which other kiln types cannot utilize. The of cement vertical shaft kiln production line can not only make full use of high-quality limestone mine resources, but also conform to the sustainable development policy of the lime industry
Energy conservation and environmental protection
The new type of environmental protection vertical kiln, through the transformation of the batching system, paving system, ash removal system, control system, andue gas dust removal system, has the advantages of environmental protection, energy saving, high degree of mechanization and automation. For example, the use of intelligent batching system, uniformaving system and energy-saving spiral cone ash remover can effectively reduce dust pollution and emissions. In addition, it is equipped with a special dust removal desulfurization denitification system, which can achieve ultra-low emissions and protect the environment.
Technical parameter
| Capacity(t/d) | 50 | 100 | 150 | 200 | 300 | 400 |
|---|---|---|---|---|---|---|
| Fabricator | BL-1 | BL-2 | BL-2 | BL-3 | BL-3 | BL-4V |
| Chimney kiln | 60m³ | 150m³ | 200m³ | 250m³ | 400m³ | 500m³ |
| Sectional form of the kiln chamber | Circle | |||||
| Take out the ash machine | WF-1 | WF-2 | WF-2 | WF-3 | WF-4 | WF-5 |
| Sintering temperature /℃ | 1100±50 | |||||
| Energy consumption index /（kCal/kg Lime） | 950±50 | |||||
| Electric consumption index /（kW·h/t Lime） | 25±5 | |||||
| Limestone: lime | 1.6~1.75:1 | |||||
| Lime burning rate /% | ≤13 | |||||
| Lime activity /ml | 220~280（Depending on the composition of the limestone） | |||||
| Emerge ash temperature /℃ | Environmental temperature +60 | |||||
| Limestone particle size into the kiln /mm | 30~80/80~120 | |||||
| Emission concentration /（mg/Nm3） | ≤30 | |||||
| Number of working days per year / day | ≥340 | |||||
| Overhaul cycle / year | 3~5 | |||||
| Number of operators / (person / shift) | 2 | |||||
| Applicable fuel | Block-shaped bituminous coal, block-shaped coke, block-shaped petroleum coke, block-shaped biomass fuel, etc. | |||||
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