Cremkote High Emissivity Coating for Crematories

A cremation chamber runs at roughly 760 to 980°C with the afterburner held near 871°C or higher for emissions compliance. At those temperatures radiant transfer dominates, and refractory brick at ~0.4 emissivity reflects a large share of burner energy into the flue. The operator pays for that loss every day: a long preheat before the first case, rising gas per cremation, afterburner fuel to hold compliance temperature, and refractory spalling and dusting from daily cycling that ages units out of spec.

Cremkote converts the chamber refractory into a re-radiator aimed at the chamber load. Preheat shortens, cycle times drop, gas per cycle falls, and the sealed refractory surface resists the cracking that cycling inflicts. In the afterburner, a coated chamber holds compliance temperature with less supplemental firing and supports more complete combustion, which steadies emissions performance. The documented installation, on natural-gas units at 1,010°C with the crown and walls of the main chamber and the walls of the afterburner coated, cut energy use 21% with faster cycles and paid back in under a year.

Existing units are coated during scheduled maintenance. Cremation equipment manufacturers can have chambers coated before delivery through the OEM program, so the unit ships with the efficiency and refractory protection built in. Savings scale with caseload; high-volume operators see payback fastest.