Dalmia DSP Success Story

TECHNICAL PREPARATION 7

standard slope of 3.5–4.0% across the industry. Initially,
suppliers were not confident about this but during
further discussion and brainstorming with them and their
principals, they all agreed upon 4.5% slope with benefits as
listed below:

•   Reduced power consumption

•   Lower RPM required so higher margin was available

in RPM at potential capacities

•   No impact on kiln operation and quality of clinker

•   Improved life of refractory due to less wear because

of lower RPM requirement

•   Degree of filling and retention time can also be

maintained well within the norms by regulating the

kiln RPM

Mr Larsen’s note also suggests that increasing the kiln slope
is always beneficial with no impact on kiln operation and
quality of clinker.

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3.5 4 4.5 5 5.

Kiln Drive, kWh/t Versus Inclination

% Inclination

Power Consumption, kWh/t