Current Developments in the Hydrometallurgical Treatment of ...
Current Developments in the Hydrometallurgical Treatment of ...
Current Developments in the Hydrometallurgical Treatment of ...
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<strong>Current</strong> <strong>Developments</strong> <strong>in</strong> <strong>the</strong> <strong>Hydrometallurgical</strong><strong>Treatment</strong> <strong>of</strong> Copper Ores and ConcentratesIron Precipitation‣ Dissolved iron will be oxidized andprecipitated as ferric hydroxide (undesirable),jarosite, goethite or hematite‣ Goethite forms at less than 140 C withhematite form<strong>in</strong>g above 140 C‣ Jarosite can form over wide temperaturerange‣ Basic ferric sulfate processes (Sepon)precipitate iron at high free acid and high T(220 C). Iron forms basic ferric sulfateswhich <strong>the</strong>n re-dissolve at atmospheric T+P.
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