. Appleton's dictionary of machines, mechanics, engine-work, and engineering. 2813. 1 > a s * . r ?y A H r1 a sfi«- r i Carolina, for which reasons we allude particularly to this furnace. Fig. 2812 is the drawing of an ele-vation of that furnace, showing it to be a double furnace; and Fig. 2813 is the plan of half the furnace,or one single furnace. In these several figures, a is the furnace or fireplace ; b, a chimney leading to METALLURGY. 397 the condensing chambers c c, in which the evaporated metals, as zinc, arsenic, &c, are conducted; d isthe stack for the escape of the burnt gases an
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. 2813. 1 > a s * . r ?y A H r1 a sfi«- r i Carolina, for which reasons we allude particularly to this furnace. Fig. 2812 is the drawing of an ele-vation of that furnace, showing it to be a double furnace; and Fig. 2813 is the plan of half the furnace,or one single furnace. In these several figures, a is the furnace or fireplace ; b, a chimney leading to METALLURGY. 397 the condensing chambers c c, in which the evaporated metals, as zinc, arsenic, &c, are conducted; d isthe stack for the escape of the burnt gases and smoke ; e is the charging door; f the drying chamberfor expelling the water from the ore; g is the hopper or charging orifice; h the hearth of the furnace;i channels for the escape of moisture from the ground; n n are openings leading to the condensingchambers. In each of these furnaces nearly half a ton of ore is charged at a time, which takes from 6to 12 hours work to be roasted; much zinc delays the process. About two thirds of a cord of wood isrequired to perf
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
