The Clarksville electrolytic zinc smelter was built on a greenfield site and commissioned in 1979. The design capacity was for a production of 81.6kt/a zinc and 270t/a cadmium. Production has gradually been increased by a series of minor improvements and capacity is estimated at 120kt/a in 2005, limited generally by roasting. Oxygen in roasting was introduced in 1987 and a pressure swing absorption (PSA) plant was installed in 1992. The Clarksville smelter was designed to treat Tennessee...
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