To advance energy conservation and carbon reduction in the cement industry, aerogel composite thermal insulation materials were first applied on a large scale in the renovation of the kiln system of this production line, adopting a composite configuration of "aerogel + calcium silicate board". By measuring the external surface temperature of the equipment after the transformation and comparing it with domestic plants A and B of the same specification, the results show that the aerogel composite thermal insulation material can significantly reduce the equipment surface temperature and the heat consumption of the production line. Meanwhile, the project's intelligent remote temperature monitoring system has improved the intelligence of temperature measurement and data accuracy. The study also identified thermal bridge effect at the brick support plates and anchors, indicating a need for targeted manner in the later stage. This research confirms that aerogel composite thermal insulation materials have both excellent thermal insulation effect and significant economic benefits in the cement industry, and have good promotion value.