Key takeaways
Fuel is the whole game.
Fuel is thirty to forty per cent of the cost of making cement, the kiln burns over ninety per cent of it, and most plants run ten to fifteen per cent above their theoretical minimum without quite seeing where it goes.
A kiln stop is a catastrophe, not an incident.
An unplanned kiln shutdown costs a hundred and fifty to four hundred thousand dollars a day in lost production, plus the thermal damage to the lining a hard stop causes.
The signals are already there.
The drift that pushes energy and quality off-spec sits in the process data days before anyone acts on it.


