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(MERAF) for the Base Metals Smelting Sector - CCME

(MERAF) for the Base Metals Smelting Sector - CCME

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<strong>Smelting</strong> Division <strong>for</strong> recovery of lead. The clean converter off-gases are <strong>the</strong>n<br />

directed to a single absorption sulphuric acid plant <strong>for</strong> recovery of sulphur<br />

dioxide.<br />

Weak acid solution from <strong>the</strong> acid plant is treated in a new water treatment plant<br />

using lime, hydrogen peroxide and ferric sulphate to precipitate arsenic and<br />

metals. Sludges are deposited in <strong>the</strong> tailings impoundment area.<br />

Blister copper is processed in an anode refining furnace to remove most of <strong>the</strong><br />

dissolved oxygen and sulphur. The product is <strong>the</strong>n cast into copper anodes which<br />

are shipped to Noranda Metallurgy Inc.’s CCR Division in Montréal-East <strong>for</strong><br />

electrolytic refining.<br />

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