Journal of Microwave Power and Electromagnetic Energy (JMPEE)

 

TITLE

Evolution of the Near-UV Emission Spectrum Associated with the Reduction Process in Microwave Iron Making [PDF]

AUTHORS

A. Matsubara, S. Takayama, S. Okajima and

 M. Sato

2008

42

3

4-8

 

YEAR

VOLUME

ISSUE

PAGES

 

Abstract

The structure of the emission spectrum in the near-UV range (240 nm – 310 nm) changes drastically from the continuous spectrum to a discrete line spectrum with increasing sample temperature during the carbothermic reduction of magnetite in a 2.45 GHz microwave multi-mode furnace. The continuous spectrum can be assigned as a cathodoluminescence of magnetite. The dynamic evolution of the spectrum from continuous to discrete represents the progress of the reduction from magnetite to iron.

 

Key Words: Microwave iron making, reduction process, highly thermal nonequilibrium, spectroscopy, near-UV emission, continuous spectrum, solid-state fluorescence, cathodoluminescence.