Fremgangsmåte for fremstilling av syntetisk rutil

Fremgangsmåte for fremstilling av syntetisk rutil

A synthetic rutile is prepared from a titaniferous slag, typically containing at least about 1.0 weight percent magnesium oxide and at least some portion of its titanium values as Ti2O3, by a method comprising contacting the slag with chlorine gas at a temperature between about 400 DEG C.-800 DEG C....

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: GUEGUIN, MICHEL
Format: Patent
Sprache:nor
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:A synthetic rutile is prepared from a titaniferous slag, typically containing at least about 1.0 weight percent magnesium oxide and at least some portion of its titanium values as Ti2O3, by a method comprising contacting the slag with chlorine gas at a temperature between about 400 DEG C.-800 DEG C., such that the magnesium oxide and chlorine gas react to form magnesium chloride, and then removing the magnesium chloride from the slag, typically by washing the slag with water. In one embodiment, the synthetic rutile can be further upgraded by subjecting it to either a caustic or acid leaching treatment.