A rudimentary treatise on the metallurgy of silver and lead .. (1861)
Lamborn, Robert H · London, J. Weale · leaf 119
t., or a small portion of the sulphide of antimony be pre¬ sent, the early part of the process will be attended by a disadvantageous clotting of the charge. THE REVERBERATORY FURNACE. There exist several modifications of this apparatus. The usual construction of those employed in the north may be… … The hearth a is hollow or funnel-shaped, so that a fluid substance placed upon it will run by its own gravity into the lowermost point at p. This hearth or bottom is formed of a layer of fire-bricks b , upon which rests a thick bed of vitrified slags, which is formed by bringing the slags into the…
Silver · Lead
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