Kinetics of reduction leaching of manganese dioxide ore with Phytolacca americana in sulfuric acid solution
The leaching kinetics of reductive leaching of manganese from manganese dioxide ores (MDO) in dilute sulfuric acid in the presence of Phytolacca americana powder (PAP) was investigated. The effects of stirring speed, leaching temperature and leaching time, particle size, weight ratio of PAP to MDO (...
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| Format: | Article |
| Language: | English |
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Springer
2016-07-01
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| Series: | Journal of Saudi Chemical Society |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1319610314001501 |
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| author | Jianrong Xue Hong Zhong Shuai Wang Changxin Li Jinzhong Li Fangfang Wu |
| author_facet | Jianrong Xue Hong Zhong Shuai Wang Changxin Li Jinzhong Li Fangfang Wu |
| author_sort | Jianrong Xue |
| collection | DOAJ |
| description | The leaching kinetics of reductive leaching of manganese from manganese dioxide ores (MDO) in dilute sulfuric acid in the presence of Phytolacca americana powder (PAP) was investigated. The effects of stirring speed, leaching temperature and leaching time, particle size, weight ratio of PAP to MDO (CW) and sulfuric acid concentration (CH) on the leaching efficiency of manganese were studied. The leaching efficiency of manganese based on the shrinking core model was found to be controlled by diffusion through the ash/inert layer composed of the associated minerals. The apparent activation energy is 15.18 kJ mol−1. The experimental results indicate reaction order of 0.797 for CH and 1.25 for CW. The overall leaching efficiency equations for MDO dissolution reaction with PAP in dilute sulfuric acid were proposed by a semi-empirical model. |
| format | Article |
| id | doaj-art-34f7d4b2d57c408a8e5b8374dc52d9c8 |
| institution | Kabale University |
| issn | 1319-6103 |
| language | English |
| publishDate | 2016-07-01 |
| publisher | Springer |
| record_format | Article |
| series | Journal of Saudi Chemical Society |
| spelling | doaj-art-34f7d4b2d57c408a8e5b8374dc52d9c82025-08-20T03:49:12ZengSpringerJournal of Saudi Chemical Society1319-61032016-07-0120443744210.1016/j.jscs.2014.09.011Kinetics of reduction leaching of manganese dioxide ore with Phytolacca americana in sulfuric acid solutionJianrong XueHong ZhongShuai WangChangxin LiJinzhong LiFangfang WuThe leaching kinetics of reductive leaching of manganese from manganese dioxide ores (MDO) in dilute sulfuric acid in the presence of Phytolacca americana powder (PAP) was investigated. The effects of stirring speed, leaching temperature and leaching time, particle size, weight ratio of PAP to MDO (CW) and sulfuric acid concentration (CH) on the leaching efficiency of manganese were studied. The leaching efficiency of manganese based on the shrinking core model was found to be controlled by diffusion through the ash/inert layer composed of the associated minerals. The apparent activation energy is 15.18 kJ mol−1. The experimental results indicate reaction order of 0.797 for CH and 1.25 for CW. The overall leaching efficiency equations for MDO dissolution reaction with PAP in dilute sulfuric acid were proposed by a semi-empirical model.http://www.sciencedirect.com/science/article/pii/S1319610314001501Manganese dioxide orePhytolacca americana branch powderReduction leachingKinetics |
| spellingShingle | Jianrong Xue Hong Zhong Shuai Wang Changxin Li Jinzhong Li Fangfang Wu Kinetics of reduction leaching of manganese dioxide ore with Phytolacca americana in sulfuric acid solution Journal of Saudi Chemical Society Manganese dioxide ore Phytolacca americana branch powder Reduction leaching Kinetics |
| title | Kinetics of reduction leaching of manganese dioxide ore with Phytolacca americana in sulfuric acid solution |
| title_full | Kinetics of reduction leaching of manganese dioxide ore with Phytolacca americana in sulfuric acid solution |
| title_fullStr | Kinetics of reduction leaching of manganese dioxide ore with Phytolacca americana in sulfuric acid solution |
| title_full_unstemmed | Kinetics of reduction leaching of manganese dioxide ore with Phytolacca americana in sulfuric acid solution |
| title_short | Kinetics of reduction leaching of manganese dioxide ore with Phytolacca americana in sulfuric acid solution |
| title_sort | kinetics of reduction leaching of manganese dioxide ore with phytolacca americana in sulfuric acid solution |
| topic | Manganese dioxide ore Phytolacca americana branch powder Reduction leaching Kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S1319610314001501 |
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