Treatment of waste material containing alkali metals in a controlled atmosphere furnace

Abstract From the Canadian patent

The invention is directed to method and apparatus for treating waste material containing alkali metal in a counter-flow furnace wherein the waste material to be processed is introduced at one end thereof and the processed material is discharged from the other end, while simultaneously air is introduced and the gases of combustion are caused to flow in a counter-current diection with respect to the material being processed and are exhausted at the first end of the furnace and wherein the furnace, has a natural tendency to form zones of processing including sequentially from the first end of the furnace a drying zone, a, charring and volatile burning zone and a fixed carbon burning, zone, and …