PROCESS FOR THE PRODUCTION OF MAGNESIUM OXIDE

PROCESS FOR THE PRODUCTION OF MAGNESIUM OXIDE

A process for the recovery of magnesium oxide from a source containing magnesium salts, said process including the steps of: (a) adding an alkali and sulfur dioxide to the source containing magnesium salts, in a leach step to form a magnesium bi-sulfite containing leachate;(b) separating the insolub...

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Hauptverfasser: REYNOLDS, GRAHAM, ANDREW, ROCHE, ERIC, GIRVAN, LEWIS, CORALIE, ADELE
Format: Patent
Sprache:eng ; fre ; ger
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CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
FERROUS OR NON-FERROUS ALLOYS
INORGANIC CHEMISTRY
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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creator REYNOLDS, GRAHAM, ANDREW
ROCHE, ERIC, GIRVAN
LEWIS, CORALIE, ADELE
description A process for the recovery of magnesium oxide from a source containing magnesium salts, said process including the steps of: (a) adding an alkali and sulfur dioxide to the source containing magnesium salts, in a leach step to form a magnesium bi-sulfite containing leachate;(b) separating the insoluble materials from the leachate; (c) stripping excess sulfur dioxide from the leachate and precipitating the magnesium as solid magnesium sulfite hydrate; (d) separating the solid magnesium sulfite hydrate from the magnesium depleted leachate; and (e) calcining the solid magnesium sulfite hydrate and recovering the magnesium as magnesium oxide.
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subjects CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
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 PROCESS FOR THE PRODUCTION OF MAGNESIUM OXIDE
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