Process for removing iron from red mud and bauxite, preparation of a starting material for the alumina industry and of iron pentacarbonyl

Process for removing iron from red muds and bauxite. The process comprises: a. The activation of the starting red mud or bauxite at 150-800 DEG C at a pressure of 0.1 to 100 bar in a reducing gaseous stream, in the presence of one or more activators, and then, b. The carbonylation at 50-300 DEG C at...

Full description

Saved in:
Bibliographic Details
Main Author REZSO CSIKOS, JOZSEF BATORY ET ISTVAN FARKAS
Format Patent
LanguageEnglish
French
Published 19.09.1986
Edition4
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
Online AccessGet full text

Cover

More Information
Summary:Process for removing iron from red muds and bauxite. The process comprises: a. The activation of the starting red mud or bauxite at 150-800 DEG C at a pressure of 0.1 to 100 bar in a reducing gaseous stream, in the presence of one or more activators, and then, b. The carbonylation at 50-300 DEG C at a pressure of 25-300 bar, with carbon monoxide or a gas containing carbon monoxide, and the removal from the system of the iron pentacarbonyl thus formed. Use for removing iron from a red mud. LA PRESENTE INVENTION EST RELATIVE A UN PROCEDE POUR ELIMINER LE FER DES BOUES ROUGES ET DE LA BAUXITE.LE PROCEDE COMPREND :A.L'ACTIVATION DE LA BOUE ROUGE OU DE LA BAUXITE DE DEPART A 150-800C SOUS UNE PRESSION DE 0,1 A 100BARS DANS UN COURANT GAZEUX REDUCTEUR, EN PRESENCE D'UN OU DE PLUSIEURS ACTIVATEURS, ET ENSUITE,B.LA CARBONYLATION A 50-300C SOUS UNE PRESSION DE 25-300BARS, AVEC DU MONOXYDE DE CARBONE OU UN GAZ CONTENANT DU MONOXYDE DE CARBONE, ET L'ELIMINATION DU SYSTEME DU FER-PENTACARBONYLE AINSI FORME.UTILISATION POUR DEFERRISER UNE BOUE ROUGE.
Bibliography:Application Number: FR19850003740