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Shaft kiln, just as its name implies, is a kiln with erected shape. Shaft kiln with modern new technology has environmental protection function, energy-saving function, high mechanization, and high automaticity. It also has the ability to turn waste into wealth.
Model: Ø2.5×40m-Ø4.0×60m
Capacity: 40-350t/d
Application: Mainly used for calcining cement clinker
Shaft kiln, just as its name implies, is a kiln with erected shape. Shaft kiln with modern new technology has environmental protection function, energy-saving function, high mechanization, and high automaticity. It also has the ability to turn waste into wealth.
Therefore, it can make full use of cheap energy, especially the pollution-carry gas such as converter gas, blast furnace gas, calcium carbide furnace tail gas, etc.
The shaft kiln is a cylindrical kiln body. The material is added from the top of the kiln and discharged from the bottom of the kiln after calcination. According to the temperature change and distribution in the shaft kiln, the shaft kiln is divided into three zones from top to bottom: preheating zone, calcining zone, cooling zone;
In order to ensure that each section of the material calcination process is carried out fully and completely, the three belts in the shaft kiln should maintain a certain height and strive to be stable.
In the shaft kiln system. The material is powered from top to bottom, and the combustion air is powered from the bottom up. The heat carried by the high-temperature material preheats the combustion air. The process is reasonable and the heat loss is small. The discharge temperature can be controlled within the ambient temperature of +60 °C. The heat can be completely controlled within (600～700)×4.18kj, which belongs to the equipment with high thermal efficiency.
It is a vertically placed device. The inner wall of the vertical kiln is usually made of refractory materials to withstand high temperatures, and there are vents and chimneys on the top.
The operation is simple, but the workers' skills are required to be high. The control of the calcination temperature and atmosphere of the vertical kiln is relatively simple, but the slag in the furnace needs to be cleaned regularly.
It is suitable for small-scale lime production, especially for special lime with high calcination quality requirements. The vertical kiln can process raw materials with more impurities.
Technical Parameters Of Vertical Kiln (Mixed Fuel)
| Effective Volume（m³） | Effective Height（m） | Effective SectionDia.（m） | Limestone Size（mm） | Heat Consumption（kj/kg） | CaO（%） | Activity（ml） |
| 98 | 20 | Ø2.5 | 30~60/40~80 | <4600 | >90 | >300 |
| 141 | 20 | Ø3.0 | 30~60/40~80 | <4600 | >90 | >300 |
| 202 | 21 | Ø3.5 | 30~60/40~80 | <4500 | >90 | >300 |
| 301 | 24 | Ø4.0 | 30~60/40~80 | <4500 | >90 | >300 |
| 397 | 25 | Ø4.5 | 30~60/40~80 | <4400 | >90 | >300 |
| 491 | 25 | Ø5.0 | 30~60/40~80 | <4200 | >90 | >300 |
| 735 | 26 | Ø6.0 | 30~60/40~80 | <4200 | >90 | >300 |
| Remarks: All above data are for reference only. | ||||||
Technical Parameters Of Vertical Lime Kiln (Fuel: Gas)
| Effective Volume（m³） | Effective Height（m） | Effective SectionDia. or L×W（m） | Limestone Size（mm） | Heat Consumption（kj/kg） | CaO（%） | Activity（ml） |
| 70 | 20 | Ø2.0 | 30~60/40~80 | <4600 | >90 | >300 |
| 80 | 20 | Ø2.5 | 30~60/40~80 | <4600 | >90 | >300 |
| 100 | 20 | Ø2.5 | 30~60/40~80 | <4500 | >90 | >300 |
| 120 | 20 | Ø2.7 | 30~60/40~80 | <4500 | >90 | >300 |
| 140 | 20 | Ø3.0 | 30~60/40~80 | <4400 | >90 | >300 |
| 150 | 21 | Ø3.0 | 30~60/40~80 | <4200 | >90 | >300 |
| 200 | 20 | 2.5×4.5 | 30~60/40~80 | <4200 | >90 | >300 |
| Remarks: Above data is for reference only, and suitable for Vertical Kiln which use low heat fuel. Utilization coefficient of Vertical Kiln which use high heat fuel is higher. | ||||||
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