Modern self recuperative burners, such as the ECOMAX®, are a simple and effective option for enhancing energy utilization on thermo-processing installations and for saving fuel. With these burners, the combustion air is preheated by the exhaust heat via a heat exchanger integrated in the burner Direct heating In conjunction with an eductor EJEK to extract the flue gases, the burner ECOMAX is used to save energy in a direct heating system without the need for long hot air lines which require insulation. Applications include heat treatment furnaces in the steel and iron industry and in the non-ferrous metal industry. Radiant tube heating Self-recuperative burners ECOMAX are used in combination with metallic or ceramic radiant tubes and segmented ceramic flame tubes SICAFLEX for indirect heating. Radiant tube heating systems are used if the combustion gases must be separated from the product, for example for heat treatment furnaces with an inert gas atmosphere in the steel industry or for the heat treatment of aluminium