File:Brunton roasting furnace.png

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Description
Français : Four à griller le minerai de Brunton, décrit en 1921.
English: Brunton roasting furnace, as described in 1921.

Text Appearing After Image:

The Brunton Roasting Furnace. — In Fig. 81 we show a plan and elevation of this furnace, also sections of the firebox. This has a revolving hearth and three sets of rabbles, being iron blades passing through the roof. These set at an angle, stir and move the ore, which is fed through the roof at the center to the discharge chute at the right. The hearth is carried on a cast-iron frame fixed to a vertical shaft and is driven by a large worm-wheel and a worm on the horizontal driving shaft. There are two coal fire-boxes kk, the flames entering at the side of the hearth and the mingled fire gases and arsenical fmnes escaping at flue m.
Date
Source The metallurgy of the common metals, gold, silver, iron (and steel), copper, lead and zinc p. 133
Author Leonard S. Austin

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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Brunton_roasting_furnace.png

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