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from chalcopyrite ore using two methods: pyrometallurgy and hydrometallurgy. The most common and commercially viable method, pyrometallurgy, involves "crushing, grinding, flotation, smelting, refining, and electro-refining" techniques. Crushing, leaching, solvent extraction, and electrowinning are techniques used in hydrometallurgy. Specifically in the case of chalcopyrite, pressure oxidation leaching

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