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| Leaching of Zinc-bearing Ash with Ammonia-ammonium Bicarbonate Process |
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Received:April 06, 2012
Revised:April 06, 2012
Accepted:April 09, 2012
Published Online:May 31, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.06.003 |
| KeyWord:ammonia-ammonium bicarbonate method; zinc-bearing ash; leaching; impurity behavior |
| Author | Institution |
| CHEN Qi-yuan |
中南大学 化学化工学院 |
| WANG Shu-bin |
中南大学 化学化工学院 |
| HU Hui-ping |
中南大学 化学化工学院 |
| WANG Wei-zhen |
中南大学 化学化工学院 |
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| Abstract: |
| The effects of pH, total ammonia concentration of ammonia-ammonium bicarbonate system, ratio of solid to liquid (L/S), temperature and leaching time on the leaching behavior of zinc and main impurities in three kinds of zinc-bearing ash were investigated. The results show that the zinc leaching rate is over 80% under the optimum conditions including total ammonia concentration of 9 mol/L and pH of 10.00, L/S of 5, temperature of 50 ℃, and the leaching time of 60 min. |
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