White ash rotary kiln
2025-08-30
1. Working Principle
Qualified limestone granules fall from the top hopper of the preheater through the discharge chute into the main body of the preheater, where they are preheated by high-temperature flue gas from the rotary kiln tail. 800 Above ℃, the limestone partially decomposes, then is pushed by a hydraulic push rod into the transfer chute, and subsequently enters the rotary kiln for high-temperature calcination; the high-temperature flue gas from the rotary kiln tail is cooled to below ℃ before entering the flue gas treatment system. 230 After high-temperature calcination in the rotary kiln, the lime falls into the vertical cooler, where the high-temperature lime is cooled by cold air blown in by the cooling fan, lowering the lime temperature to ambient temperature. +60 Below ℃, the lime is discharged from the vertical cooler. The secondary air used to cool the lime is heated into high-temperature combustion-supporting air and enters the rotary kiln to participate in combustion, reducing the primary air ratio of the burner and achieving energy-saving combustion.
The calcination principle of the white lime rotary kiln is the high-temperature decomposition of limestone (mainly calcium carbonate) to produce calcium oxide (quicklime) and carbon dioxide.
2. Burner Selection
- Gas Burner
Fuel: natural gas, liquefied petroleum gas, blast furnace gas, coke oven gas, light hydrocarbon gas, etc.;
- Oil Burner
Fuel: diesel, methanol, heavy oil, alcohol-based fuels, etc.
- Pulverized Coal Burner
Fuel: pulverized coal
Currently, most in the industry use gas burners and gas oxygen-enriched full-oxygen burners.
3. Applicable Industries
Suitable for calcining limestone in metallurgy, chemical, and building materials industries.
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Address: No. 118, Fengqing Road, Jinshui District, Zhengzhou City
Tel:+86-371-60960056
Mobile:+8613849187223
Email:zhongweigongyelu@126.com
Address: No. 118, Fengqing Road, Jinshui District, Zhengzhou City
Tel:+86-371-60960056
Mobile:+8613849187223
Email:zhongweigongyelu@126.com
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