But what about the heat unveiled in the course of clinker cooling or even the drying processes? Business experiences estimate that just about 40% of all energy inputs in cement producing are wasted by way of heat reduction, mostly as a result of out-of-date cooling programs and badly insulated kilns. https://purethermal.co.uk/media-news/november-launch-waste-heat-recycling-design-support-service-from-pure-thermal-and-oilon/