Advanced kiln and cooler operations: integrating alternative fuels and digital intelligence

Modern cement manufacture faces twin imperatives — produce stronger, more consistent clinker while drastically reducing fuel use and CO2 emissions. Recent developments in kiln and cooler operation, digital control, and alternative fuel utilization have changed the landscape.

Drawing on global and Indian data from 2024—2025, this article explains in clear terms how plants can combine model-predictive control, artificial intelligence (AI), waste-heat recovery (WHR), and carbon-capture systems to improve thermal efficiency, achieve up to 90 % thermal substitution rate (TSR), and lower specific heat by 10—15 %.

Practical diagnostic indicators, energy — exergy maps, and a Clinker Quality Index (CQI) translate these innovations into everyday plant decisions, enabling operational excellence.