Preliminary communication

Microstructural characterisation of chromium slags

J. Burja ; Institute of Metals and Technology, Ljubljana, Slovenia
F. Tehovnik ; Institute of Metals and Technology, Ljubljana, Slovenia
F. Vode ; Institute of Metals and Technology, Ljubljana, Slovenia
B. Arh ; Institute of Metals and Technology, Ljubljana, Slovenia

Abstract

In this chromium slags that form during melting of chromium alloyed steels are examined. During melting and oxidation of these steel grades a considerable amount of chromium is lost, and gained back with slag reduction. Laboratory experiments were performed to study the mechanism of chromium oxide reduction by silicon. Slags chemistry and phase composition have a strong effect on the steelmaking process. Phase analysis revealed two types of chromium oxides, calcium chromites and chromite spinels dependent on chemistry and basicity of the slag.

Keywords

steelmaking slag; chromium oxide; microstructure; chromium slag reduction

Hrčak ID:

128967

URI

https://hrcak.srce.hr/128967

Publication date:

1.4.2015.

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