Cement rotary kiln production line lime kiln calcining rotary kiln
Rotary kiln introduction:
The rotary kiln achieves the purpose of sintering by placing raw materials into a rotating cylinder for thermal reaction. A cylinder rolled from steel plates with a thickness of 10 to 45 mm, lined with refractory bricks or other refractory materials.
According to the different materials processed, it can be divided into cement kiln, metallurgical chemical kiln and lime kiln. The cement kiln is mainly used for calcining cement clinker. It is used to roast aluminum hydroxide into alumina in aluminum production. It is used in ironmaking to produce pellets for blast furnace ironmaking. It is used in the chloride volatilization roasting method to extract tin and Lead, etc., during the mineral processing process, a rotary kiln is used to magnetize and roast the lean iron ore, so that the original weak magnetism of the ore is changed into a strong magnetism, which is beneficial to the magnetic separation of the magnetic separator. In the chemical industry, rotary kilns are used to produce soda, calcine phosphate fertilizers, barium sulfide, etc.
Feature:
1. Filled, circular or square vertical cooler with zoned ventilation, the temperature of the lime coming out of the cooler is 800C + ambient temperature, which is convenient for transportation and storage, and can preheat the secondary air entering the kiln to above 7000C, reducing moving parts and special materials.
2. A rotary kiln with a vertical preheater installed at the end of the rotary kiln can make full use of the exhaust gas to preheat the material, greatly reducing fuel consumption and having certain advantages in production.
3. The vertical preheater with advanced structure and low pressure loss can effectively preheat the preheated limestone. The decomposition rate of the preheated limestone in the kiln can reach 20-25%, and 10-15mm fine-grained limestone can be directly used.
4. Reliable combined scale seals at both ends of the rotary kiln. Use composite refractory materials to make the air leakage coefficient less than 10% to reduce radiant heat loss.
Rotary kiln parameter:
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Metallurgical Chemical Cement Rotary Kiln Production Line For Lime Calcination Images
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