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| Investigation on Effect of Microwave Pretreatment on Magnetite Beneficiation |
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Received:August 07, 2017
Revised:August 15, 2017
Accepted:August 15, 2017
Published Online:December 01, 2017
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| DOI： |
| KeyWord:Microwave; magnetite; magnetic separation; production of concentrates |
| Author | Institution |
| ZHENG Xiaoying |
Kunming Metallurgy College,Kunming |
| CHEN Hufei |
Key Laboratory of Unconventional Metallurgy,Ministry of Education,Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming |
| CHEN Jin |
Key Laboratory of Unconventional Metallurgy,Ministry of Education,Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming |
| CHEN Guo |
Key Laboratory of Resource Clean Conversion in Ethnic Regions,Education Department of Yunnan,Yunnan Minzu University,Kunming,Yunnan ,China |
| LI Jun |
Key Laboratory of Unconventional Metallurgy,Ministry of Education,Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming |
| PENG Jinhui |
Key Laboratory of Unconventional Metallurgy,Ministry of Education,Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming |
| RUAN Rongsheng |
Key Laboratory of Resource Clean Conversion in Ethnic Regions,Education Department of Yunnan,Yunnan Minzu University,Kunming,Yunnan ,China |
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| Abstract: |
| In this study, the microwave was used to preheat the ore to make the minerals be better dissociated, and the magnetic separation concentrate productivity and the grade of magnetite concentrate were improved. The results show that when the microwave power reaches 3 kW, the magnetic separation concentrate productivity of magnetite increases from 44% to 72% of the untreated raw ore; and when the magnetic current was 2.0 A, the production rate of magnetic separation concentrates reaches 60% of the maximum; besides, after the magnetic treatment by the microwave heating, the concentrate grade of the ore was increased by 6~8% compared with that of the raw ore (50.2%). |
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