- Product：600 tons/day rotary kiln lime kiln
- Product alias：Lime rotary kiln
- Calcination technology：Rotary calcination
- Capacity scale：600T/P
- Control system：PLC control system
- Unit energy consumption：120-130kg standard coal
- Usage：Metallurgy, construction lime calcination
- Price：34 million RMB Cost varies depending on production capacity scale
Lime is an important auxiliary raw material for industries such as steel, alumina, magnesium metal, calcium carbide, and desulfurization and papermaking in power plants. With the continuous development of industrial technology, the requirements for the quality and output of lime are also increasing. Rotary kiln lime kiln, as an efficient and environmentally friendly lime production equipment, has been widely used in the field of lime production due to its unique structure and working principle. This article will provide a detailed introduction to a rotary kiln lime kiln with a daily output of 600 tons, including its structure, working principle, parameter table, and advantages.
1、 Rotary kiln structure
The rotary kiln lime kiln mainly consists of the following parts:
Kiln barrel
The kiln barrel is the main part of a rotary kiln, usually made of refractory materials, with excellent high temperature resistance and wear resistance. The kiln barrel is cylindrical and supported by bearings on a horizontal foundation, allowing it to rotate along the horizontal axis. There are refractory bricks or refractory castables inside the kiln barrel to protect it from high-temperature erosion.
Drive device
The driving device is the power source for the rotation of the rotary kiln. There are two common driving devices: gear transmission and hydraulic transmission. Gear transmission usually consists of an electric motor, a reducer, and gears, which rotate the kiln barrel through the meshing of gears. Hydraulic transmission controls the speed of the kiln barrel through a hydraulic system. The design of the driving device should ensure that the kiln barrel runs smoothly and reliably during operation.
burner
The burner is the heat source of the rotary kiln and is usually installed at one end of the kiln barrel. The burner generates high-temperature combustion gas by burning fuel, which is introduced into the rotary kiln to provide heating energy for the materials. The design of the burner should ensure sufficient and stable combustion, while reducing the emission of harmful gases.
Cooling device
The cooling device is usually installed at the tail of the rotary kiln to reduce the temperature of the material. There are two common cooling devices: air coolers and water coolers. The air cooler uses cold air to cool materials through forced ventilation; The water cooler carries away heat through the flow of water, achieving rapid cooling of materials. The design of the cooling device should ensure that the materials are not damaged during the cooling process, while reducing energy consumption.
Auxiliary devices
The rotary kiln is also equipped with some auxiliary devices, such as material feeding device, material discharge device, airflow control device, etc. The function of these auxiliary devices is to ensure the smooth transmission of materials in the kiln and the smooth progress of the reaction process.
2、 Working principle
The working principle of a rotary kiln lime kiln can be simply summarized as the material being heated and flowing by a heat source in the rotary kiln, resulting in chemical reactions or physical changes, and ultimately obtaining the required lime product. The specific process is as follows:
heating process
The high-temperature combustion gas generated by the burner enters the rotary kiln through the combustion chamber. The temperature of the material in the rotary kiln gradually increases due to the heating effect of the kiln wall and hot air flow. During the heating process, the moisture in the material gradually evaporates, and organic matter decomposes or burns, releasing heat and promoting the reaction.
Reaction process
As the rotary kiln rotates, the materials continuously flip and mix inside the kiln, allowing them to come into full contact with hot gases and accelerating the reaction rate. Under high temperature and oxidizing atmosphere, materials undergo chemical reactions such as oxidation, reduction, decomposition, and synthesis, ultimately producing lime.
cooling process
A cooling device is usually installed at the tail of the rotary kiln to quickly reduce the material temperature. The cooling device rapidly cools the material from a high temperature state to ambient temperature through air or water cooling to prevent the product from reacting again. The cooled lime is discharged from the kiln through the material discharge device.
3、Parameters
The following is a table of the main parameters of a 600 ton rotary kiln lime kiln with a daily output:
| Parameter | values |
|---|---|
| Specification | ΦX（epending on specific design） |
| Speed | 0.6~3 r/min（depending on specific design） |
| Slope | 3～3.5% |
| Production capacity | 600 t/d |
| Power | 22 kW |
| Equipment weight | 278 t |
| Kiln barrel length | 50 m |
| Kiln barrel diameter | 3 m |
| Burner type | Coal powder burner |
| Cooling method | air cooling/water cooling |
| Auxiliary devices | Feed device, discharge device, airflow control device, etc |
he rotary kiln lime kiln with a daily output of 600 tons has the following advantages:
High output: This type of rotary kiln is designed reasonably and has strong production capacity, which can meet the needs of large-scale activated lime production lines.
Stable quality: The materials inside the rotary kiln roll forward evenly, receive heat evenly, and the product quality is stable, with low rates of overheating and over burning.
Environmental Protection and Energy Conservation: The rotary kiln adopts advanced combustion and cooling technologies, which can reduce energy consumption and harmful gas emissions, meeting environmental protection requirements.
Wide applicability: This type of rotary kiln can directly calcine 10-50mm fine-grained limestone, fully utilizing high-quality limestone mining resources.
High degree of automation: The rotary kiln is equipped with advanced control systems and automation devices, which can achieve remote monitoring and operation, and reduce labor costs.
The 600 ton rotary kiln lime kiln, with its strong production capacity, stable product quality, environmentally friendly and energy-saving characteristics, and wide applicability, has shown significant advantages in the field of lime production. Its efficient combustion and cooling technology ensures energy conservation and environmental protection in production, while the improvement of automation further reduces operating costs. In addition, the design of the lime kiln can directly calcine fine-grained limestone, fully utilizing high-quality resources. Overall, a rotary kiln with a daily output of 600 tons is an ideal choice for modern lime production enterprises.
