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smill jaw crusher salesextraction of zinc introduction, mining, procedure, and faqs mar 11, 2021 the most commonly available ore in the extraction of zinc is zinc blende also knzinc concentrates are currently exported and low-grade middling concentrates go mainly to imperial smelting process plants. production. performance improved again in 2005. the mines delivered 4.t of ore, of which 4.t were treated, yielding 231, of zinc in cencentrates, 160, of lead-in-bullion and 11.oz of silver in crude lead.