Reactions between some refractories and copper matte. Slag melts

Takashi Nakamura, Fumio Noguchi, Yasuaki Ueda

Research output: Contribution to journalArticlepeer-review

Abstract

Reactions between refractories and copper matte-fayalite slag melts were observed at 1473 K by high temperature X-ray radiophotography. Local corrosion was observed at the surface of slag and the interface between copper matte and slag in a high grade alumina crucible. The mechanism of local corrosion is discussed from the viewpoint of movement of the slag film at the interface due to the Marangoni effect. High grade magnesia refractory was more resistant to corrosion. A cermet consisting of alumina and chromium showed stronger protection than the magnesia refractory from attack. Since violet generation of gas was found in the oxidation reactions of silicon nitride(Si3N4) and silicon carbide(SiC) with Cu slag, both non-oxide type ceramics are considered insufficient to protect tube from Cu slag.

Original languageEnglish
Pages (from-to)40-44
Number of pages5
JournalShigen to sozai
Volume105
Issue number1
DOIs
Publication statusPublished - 1989

ASJC Scopus subject areas

  • Engineering(all)

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