Yes — cement is one of the six CBAM categories, including indirect (electricity) emissions. Exporters without a domestic carbon price pay the full EU-linked certificate price on a rising share to 2034.
From our guide: Decarbonizing Cement — full context, charts and sources there.
Boilers, kilns, heat exchangers, valves and steam lines lose energy continuously. Inzonex makes patented (UK GB2508992.1) removable modular insulation — snap-fastened covers engineered per temperature tier, not generic off-the-shelf jackets: