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| Preparation of Active Zinc Oxide by High-Speed Atomization |
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Received:March 05, 2010
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| DOI：DOI：10.3969/j.issn.1007-7545.2011.01.012 |
| KeyWord:Active zinc oxide；Spray decomposition method；Spray drying；Leaching |
| Author | Institution |
| ZHANG Zhi-bing |
中南大学冶金科学与工程学院 |
| SHI Xi-chang |
中南大学冶金科学与工程学院 |
| LIU Jian-hua |
江西理工大学材料与化学工程学院 |
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| Abstract: |
| The preparation of active zinc oxide by high-speed atomization decomposing method from a low-grade zinc oxide ore was studied．The low-grade ore was leached by NH4HCO3, NH3·H2O and H2O. The leaching efficiency was 98.48% and the ZnO content in the leaching solution was up to 25.3%. The impurity of leaching solution was precipitated by zinc powder and filtered. Then the filtrate was injected into a spray drying tower at entrance temperature 430 ℃. It can generate highly active zinc oxide. The iodine-absorbed quantity of active zinc oxide prepared was 42.445 mg/g and much higher than that of the other preparation method. |
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