What are the advantages of lime kiln
Lime shaft kiln, as an efficient and environmentally friendly lime production equipment, plays a crucial role in modern industrial production. Its unique structure and design give it a series of significant advantages, which will be discussed in detail below.
Lime shaft kiln has excellent energy-saving performance. It is divided into a preheating zone, a calcination zone, and a cooling zone from top to bottom. This design allows cooling air to blow in from the bottom, cool the product after heat exchange, and preheat the air. The air carrying heat enters the calcination zone to participate in combustion, effectively reducing energy consumption.
The insulation effect of lime shaft kiln is excellent. The kiln skin is constructed vertically with four layers of refractory materials, which allows the temperature of the kiln skin to be controlled at around 60 ℃ higher than the ambient temperature, greatly improving the energy-saving effect. In addition, the material does not directly collide with the refractory material on the working face inside the kiln, but relies on gravity settlement and friction with the working face, which greatly reduces the wear rate of the refractory material and extends its service life.
The fuel adaptability of lime shaft kiln is extensive, which is also one of its major advantages. Blended kilns can use block fuels such as lump coal and coke, while gas kilns can use high calorific value fuels such as natural gas and coke oven gas, as well as low calorific value fuels such as converter gas and blast furnace gas. This extensive fuel adaptability enables lime kilns to fully utilize various inexpensive energy sources and reduce production costs.
Lime shaft kiln has a small footprint and low investment. Due to the vertical arrangement of the vertical kiln, the compact functional areas greatly reduce the footprint. At the same time, the steel structure of the kiln has fewer machined parts, lower processing costs, low installation difficulty, and low difficulty in refractory masonry, thus saving investment costs.
Lime shaft kiln also has environmental performance. The CO2 concentration in its flue gas can reach over 35%, and the recovery cost is low, making it suitable for industries such as nano calcium carbonate. In addition, the lime kiln is equipped with an advanced dust removal system to ensure that the flue gas is purified and discharged in compliance with standards, reducing environmental pollution.
Lime shaft kiln plays an increasingly important role in modern industrial production due to its energy-saving, good insulation effect, wide fuel adaptability, small footprint, low investment, and environmental protection advantages.
