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| PREPARATION OF PLATING GRADE COPPER SULFATE FROM LOW-GRAGE COPPER OXIDE ORES |
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Received:December 10, 2010
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| DOI：10.3969/j.issn.1005-7854.2011.02.018 |
| KeyWord:oxide copper ores ; extraction; copper sulfate |
| Author | Institution |
| NIE Yang |
Faculty of Metallurgical and Energy Engineering，Kunming University of Science and Technology，Kunming，Yunnan ，China |
| ZHANG Xu |
Faculty of Metallurgical and Energy Engineering，Kunming University of Science and Technology，Kunming，Yunnan ，China |
| MAO Sheng-hua |
Faculty of Metallurgical and Energy Engineering，Kunming University of Science and Technology，Kunming，Yunnan ，China |
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| Abstract: |
| Plating grade copper sulfate is prepared from low-grade copper oxide ores by leaching, extraction, back extraction, crystallization and purification process. The effects of extractant concentration, O/A ratio, extraction time and sulfate acid concentration on extraction rate are investigated. The results show that the leaching rate of copper is up to 65% after the low-grade copper oxide mineral is leached by sulfate acid. The extraction rate is up to 90% after copper is extracted by M5640 when extractant concentration is 20%, O/A ratio is 1/3, extraction time is 120 s, sulfate acid concentration is 1.5g/L, diluent is kerosene. The purity of plating grade copper sulfate is 93.35% after the loaded organic phase is treated by back extraction, crystallization and purification process of strip liquor. |
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