Title: Effect of Roasting with Ammonium Sulfate and Sulfuric Acid on the Extraction of Copper and Cobalt from Copper Converter Slag
Abstract:Abstract Copper converter slag, provided by Ergani Copper Co. of Etibank and containing 2.56% copper and 0.22% cobalt, was roasted with ammonium sulfate. The effects of such parameters as temperature ...Abstract Copper converter slag, provided by Ergani Copper Co. of Etibank and containing 2.56% copper and 0.22% cobalt, was roasted with ammonium sulfate. The effects of such parameters as temperature (200–600°C), duration of roasting (15–120 min), and amount of ammonium sulfate (0.5–2.5 times stoichiometric) have been studied. Under optimum conditions (slag size, − 100 mesh; stoichiometric requirement of ammonium sulfate; roasting temperature of 400°C for 60 min), we obtained 88% Cu and 67% Co by extraction. Similar studies were carried out with concentrated sulfuric acid. The influence of experimental variables such as roasting temperature (25–300°C), roasting period (30–120 min), and amount of sulfuric acid (0.5–2 times stoichiometric) has been studied. Under atmospheric conditions, i.e., at 200°C and a roasting period of 60 min with 1.5 times the stoichiometric amount of sulfuric acid, recoveries of copper and cobalt were 82 and 96%, respectively.Read More
Publication Year: 1991
Publication Date: 1991-08-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 34
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