PREPARATION OF ALKALI CHROMATE FROM CHROME ORE

A method for manufacturing alkali chromates by the reacting of chromium ore with alkali compounds and oxidation in an atmosphere containing at least 50% oxygen is described, in which the mixture consisting of chromium ore, alkali compound and optionally leaning materials is heated in a first stage i...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	UBE ARUNTO, RAINAA BERINGUHAUZEN, HANSU RINKESU, MIHIYAERU BATSUTSU, HANSUUGEORUKU NIIDAA FUAARENHORUTSU, HANSUUHAINRIHI MORETSUTO, HANSUUDEIITAA BUROTSUKU, HAINRIHI HERUKAA, NORUBERUTO RENHOFU, RAINAA BEBAA, BERUNHARUTO SHIYUPUREKERUMAIYAA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A method for manufacturing alkali chromates by the reacting of chromium ore with alkali compounds and oxidation in an atmosphere containing at least 50% oxygen is described, in which the mixture consisting of chromium ore, alkali compound and optionally leaning materials is heated in a first stage in an atmosphere containing not more than 5 vol. % oxygen to a temperature between 1000 DEG and 1 400 DEG C., and in a second stage is oxidized at a lower temperature of 900 DEG to 1 070 DEG C. with supply of an atmosphere containing at least 50% oxygen.