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| Continuous Determination of Copper and Iron in Flotation Wastewater by Iodometric Method |
| Received:July 20, 2014 Revised:August 12, 2014 |
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| DOI：doi:10.3969/j.issn.2095-1035.2014.04.014 |
| KeyWord:mineral processing wastewater; iodimetry; potassium dichromate; copper; iron |
| Author | Institution |
| GAO Qianqian |
厦门紫金矿冶技术有限公司，福建 厦门 |
| LIU Haibo |
厦门紫金矿冶技术有限公司，福建 厦门 |
| ZHANG Yuan |
厦门紫金矿冶技术有限公司，福建 厦门 |
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| Abstract: |
| In this paper, experiments were on flotation wastewater containing copper and iron ions,Based on the determination of copper content, aluminum chloride solution was added to unmask the ferric icon.At this point, the solution was dark-brown and the titration end point was ended when the solution color turned from dark-brown solution to milk white. This method avoided the troubles of individual titration of copper and iron ions. In addition, removal of copper ions was not required when iron ions were titrated. The determination results were consistent with those obtained by the potassium dichromate titrimetricmethod. The relative error was less than 2.03%, and the recovery was in the range of 95.80%~101.9%, with the relative standard deviations (n=10) of 0.48%~1.5%.The method is of high precision, and good reproducibility, and it is simple and efficient to meet the requirements for the determination of copper and iron contents in flotation wastewater. |
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