imperial smelting process

imperial smelting process

[im′pir·ē·əl ′smel·tiŋ ‚präs·əs]
(metallurgy)
A pyrometallurgical process which treats a complex concentrated feed to a single furnace to recover zinc, copper, lead, cadmium, silver, gold, and other metals in one pass. Abbreviated ISP.
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Lead production in the EU is from four lead-zinc shaft furnaces via the Imperial Smelting process and five other plants using new technologies i.e.
The basic design of the prototype plant is being prepared by Kilborn SNC-Lavalin Europe, and Imperial Smelting Process (ISP), a division of Rio Tinto, will carry out the preliminary design work on the condenser system.
Subsequently, in 1994 a demonstration plant was built that included a plasma-arc furnace and an Imperial Smelting Processes Ltd.

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