Getting Gold: A Gold-Mining Handbook for Practical Men
CHAPTER VIII
CALCINATION OR “ROASTING” OF ORES
Effect of roasting--Various methods--Reverberatory furnaces--Howell, White, Brückner, Thwaite-Denny, and Molesworth types of revolving cylinder furnaces--Shaft type--The Stetefeldt furnace--Chimneys--Depositing chambers pp. 100-108