Field-Intensified Metallurgy

JOM, Oct 2017

Zhiwei Peng, Jesse F. White

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Field-Intensified Metallurgy

no. 12) of JOM and can be accessed via the JOM page at http://link.springer. com/journal/11837/69/12/page/1. Field-Intensified Metallurgy ZHIWEI PENG 1 2 JESSE F. WHITE 0 1 2 0 from Panzhihua Sulfate Titanium Slag by Microwave Heating'' by Hufei Chen , Guo Chen, Yunqi Wu, Jinhui Peng, C. Srinivasakannan, and Jin Chen ''Arcmon for Process Control in Silicomanganese 1 ''Synthesis of Rutile TiO 2 1.-School of Minerals Processing and Bioengineering, Central South University , Changsha 410083, Hunan, China. 2.-Elkem Carbon AS, 4675 Kristiansand, Norway. 3.- Interest is high in applying external fields, e.g., microwave and electric fields, to various metallurgical routes to gain maximum economic and environmental benefits.1,2 In this special topic on FieldIntensified Metallurgy, we will provide our readers interesting and exciting updates on improving various metallurgical processes by applying different fields. Also covered will be advances in addressing the challenges or problems that may restrain the development of field-intensified metallurgy. Microwave fields have been extensively used for treatment of metallurgical solid waste because of their selective and volumetric thermal effects.3 In the first article of this series, ‘‘Synthesis of Rutile TiO2 from Panzhihua Sulfate Titanium Slag by Microwave Heating,’’ Hufei Chen et al. describe a novel microwave technology for the synthesis of rutile TiO2 from a sulfate titanium slag. The microwave field has proven effective in accelerating the transformation of the anosovite phase of sulfate titanium slag to the rutile TiO2 phase at 1100 C for a duration of 120 min. The findings were based on exploration of the changes in physicochemical properties of sulfate titanium slag under microwave irradiation, including crystal structure, surface microstructure, and surface chemical functional groups. This study verified the great potential of microwave heating in triggering the process of production of rutile TiO2 from titanium slag and other relevant secondary resources. In the next article of this series, ‘‘Arcmon for Process Control in Silicomanganese Production: A Case Study,’’ Joalet Dalene Steenkamp et al. propose the use of Arcmon, a device for quantifying the amount of undesirable arcing that occurs as a result of applying electric fields in submerged-arc furnaces (SAFs) for process control in silicomanganese production. It was based on the authors’ observation of the differences in arcing behavior between the three Zhiwei Peng and Jesse White are the JOM advisors for the Pyrometallurgy Committee of the TMS Extraction and Processing Division, and guest editors for the topic Field-Intensified Metallurgy in this issue. Production: A Case Study’’ by Joalet Dalene Steenkamp, Christopher James Hockaday, Johan Petrus Gous, Wilma Clark, and Archie Corfield ‘‘Thermodynamic Analysis of Oxygen-Enriched Direct Smelting of Jamesonite Concentrate’’ by Zhong-Tang Zhang, Xi Dai, and Wen-Hai Zhang. 1. J. Forster , C.A. Pickles , and R. Elliott , Miner. Eng. 88 , 18 ( 2016 ). 2. X. Lin , Z. Peng , J. Yan , Z. Li , J.Y. Hwang , Y. Zhang , G. Li, and T. Jiang , J. Clean . Prod. 149 , 1079 ( 2017 ). 3. Z. Peng and J.Y. Hwang , Int. Mater. Rev . 60 , 30 ( 2015 ).

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Zhiwei Peng, Jesse F. White. Field-Intensified Metallurgy, JOM, 2017, 1-2, DOI: 10.1007/s11837-017-2622-1