Ring section baking furnace and procedure for operating same

Abstract From the Canadian patent

A ring section baking furnace for the indirect heating of shaped bodies or particulate material particularly, for calcination in which the vertical ducts or channels, in the pit walls are arranged in groups by means, of partition walls under the bottom of the pits. The flue gases are led up and down through these ducts. The combustion chambers of furnaces of earlier design may thus be absent, and this volume incorporated in the pit volume. The ducts in each pit wall lead out over the pit wall into one or more separate spaces which series connect two neighboring groups in the pit wall. Less refractory brick is required more even temperature, of the calcined material is achieved and …