heated by hot air or gas

Full Title

Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity > heated without contact between combustion gases and charge; electrically heated > heated by hot air or gas

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

FURNACES; KILNS, OVENS OR RETORTS

Subclass:

FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS