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Vol.41, No.6, 383 ~ 389, 2003
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| Title |
| Separation of Iron, Manganese and Zinc by Solvent Extraction with Alamine336 from Chloride Solutions Containing Cobalt and Nickel |
| 안재우 Jae Woo Ahn , 안종관 Jong Gwan Ahn , 박경호 Kyung Ho Park , 손정수 Jeong Soo Shon |
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| Abstract |
| The separation and recovery of cobalt and nickel from hydrochloric leaching solutions of manganese nodules were imitated by solvent extraction using Alamine336 in Xylene. The behavior of impurities such as iron, zinc, copper and manganese was also investigated. With the increase of chloride ion concentration, cobalt was selectively extracted from nickel owing to the difference of chlorocomplex in solution and the minimum chloride ion was 5.0M. But in this extraction step, the impurity metals such as copper, iron, manganese, zinc were also co extracted in the organic phase. However, co-extracted metals in the organic phase could be effectively separated in the scrubbing and stripping step. Manganese and nickel were effectively removed in the scrubbing step with 6.0M hydrochloric solutions but copper, iron and zinc were loaded in the organic phase with cobalt. Finally, the metal-bearing organic phase was contacted with the hydrochloric strip solution to recover the loaded cobalt. The impurity metals were effectively removed in this step with controlling the concentration of chloride ions in the strip solution. From the experiment, The behaviors of impurities on each of operation steps in extraction, scrubbing and stripping processes were investigated. Consequently the optimum condition for the separation of cobalt from hydrochloric solution were proposed. |
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| Key Words |
| Manganes nodule, Alamine336, Chloride, Cobalt, Nickel |
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