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...
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| creator | UBE ARUNTO RAINAA BERINGUHAUZEN HANSU RINKESU MIHIYAERU BATSUTSU HANSUUGEORUKU NIIDAA FUAARENHORUTSU HANSUUHAINRIHI MORETSUTO HANSUUDEIITAA BUROTSUKU HAINRIHI HERUKAA NORUBERUTO RENHOFU RAINAA BEBAA BERUNHARUTO SHIYUPUREKERUMAIYAA |
| description | 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. |
| format | Patent |
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| subjects | 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 |
| title | PREPARATION OF ALKALI CHROMATE FROM CHROME ORE |
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