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Double-chamber Shaft Kiln

Double-chamber Shaft Kiln

The double-chamber heat storage shaft kiln is commonly called Maerz kiln. Compared with other lime kilns, it has the lowest heat consumption, high activity of calcined lime and low residual carbon dioxide.
 
 
 

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Overview

The double-chamber heat storage shaft kiln is commonly called Maerz kiln. Compared with other lime kilns, it has the lowest heat consumption, high activity of calcined lime and low residual carbon dioxide.
 
 
Process characteristics of double chamber shaft kiln:
The stone is loaded from the top of the kiln, and the fuel is fed into the upper part of the kiln. The spray guns located at the bottom of the pre-tropical zone are evenly distributed across the section of the kiln. The combustion-supporting air is fed from the upper part of the shaft kiln. The combustion-supporting air is preheated in the preheating zone before mixing with the fuel, and then the calcining flame gas flows through the calcining zone and flows co-currently with the ore to obtain the ore. The calcined waste gas is discharged to the top of the kiln along the preheating belt of the other kiln through the passage connecting the two kilns. Due to the long process of parallel calcination, the lime quality is very good, and due to the alternate operation of the two kilns, the waste gas directly preheats the ore, and the heat is fully utilized, so the unit heat consumption is lower in various kilns.

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