processo e instalação para produzir óxido metálico a partir de sais metálicos

processo e instalação para produzir óxido metálico a partir de sais metálicos

When producing metal oxide from metal salts, the metal salt, in particular aluminum hydroxide, is dried and preheated in a first preheater (2) at a temperature of 100 to 200°C, precalcined in a second preheater (5) at a temperature of 300 to 400°C and then calcined in a reactor (8) at a temperature...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Günter Schneider, Erwin Schmidbauer, Michael Missalla, Cornelis Klett
Format: Patent
Sprache:por
Schlagworte:
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:When producing metal oxide from metal salts, the metal salt, in particular aluminum hydroxide, is dried and preheated in a first preheater (2) at a temperature of 100 to 200°C, precalcined in a second preheater (5) at a temperature of 300 to 400°C and then calcined in a reactor (8) at a temperature of 850 to 1100°C to obtain metal oxide, in particular alumina. After precalcination in the second preheater (5), a partial stream of the metal salt is branched off and supplied to a mixing tank (14), in which it is mixed with the metal oxide withdrawn from the reactor (8).