comprehensive lecture about Precalciner everything you need to know
Main Benefits of Precalciner Technology
1. More stable kiln operation due to better kiln control via two separate
fuel feed/control points
2. More stable kiln operation due to controlled meal conditions at kiln inlet
3. Reduced thermal load of burning zone
4. Lower refractory consumption as a result of 1. to 3.
5. More than double capacities possible with given kiln (10'000 t/d: 6 x 95m)
6. Possibility of increasing capacity of existing kilns
7. Reduced volatilisation of circulating elements
8. Reduction of cycles (S, Cl, Na2O, K2O) with lower bypass rate / losses
9. Makes short kilns possible with 2 stations, L/D < 12
10. Possibilities of NOx reduction
11. Lump fuel (AFR) utilization (in-line only)
Dimensioning Criteria for Precalciners
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