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| The investigation on the preparation of synthetic rutile and its phase transformation using microwave heating |
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Received:August 19, 2017
Revised:May 03, 2018
Accepted:August 22, 2017
Published Online:January 11, 2019
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| DOI： |
| KeyWord:microwave heating; synthetic rutile TiO2; high titanium slag |
| Author | Institution |
| ZHENG Xiaoying |
Kunming Metallurgy College |
| HE Aoxi |
Joint Research Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan,Yunnan Minzu University; Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Yunnan Minzu University |
| CHEN Jin |
Joint Research Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan,Yunnan Minzu University; Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Yunnan Minzu University |
| FENG Kanglu |
Joint Research Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan,Yunnan Minzu University; Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Yunnan Minzu University |
| LI Yiheng |
Joint Research Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan,Yunnan Minzu University; Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Yunnan Minzu University |
| CHEN Guo |
Joint Research Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan,Yunnan Minzu University;China;Key Laboratory of Resource Clean Conversion in Ethnic Regions,Education Department of Yunnan,Yunnan Minzu University,Kunming,Yunnan ,China;State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Pangang Group Research Institute Co,Ltd;PR China |
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| Abstract: |
| Natural rutile is one of the important raw materials for the production of TiO2 pigment. Nowadays the high grade natural rutile resource become limiting. So it is urgent to explore a new method with low energy consumption and less environmental pollution for the preparation of synthetic rutile TiO2. Microwave heating technology has been widely used in both research and industrial processes. Compared with the traditional heating, microwave heating is selective and the speed of it is fast. In this paper, a new method with microwave heating is proposed to the preparation of synthetic rutile TiO2. The crystal structure and microstructure were investigated by X-ray diffraction (XRD), scanning electron microscope-energy spectrum analysis (SEM-EDAX), respectively. XRD analysis results show that the main phase of high titanium slag is anosovite, accompanied with a small amount of anatase and rutile phase. After microwave roasting, anatase has disappeared, the peak of rutile increases. SEM-EDAX analysis results show that the surface of high titanium slag is smooth. After microwave heating, some irregular rod-like particles appeared which belongs to the morphology of rutile TiO2 |
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