no. 12) of JOM and can be
accessed via the JOM page at http://link.springer.
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 ).