Tech. for preparing ultrapure magnesia from bittern

Tech. for preparing ultrapure magnesia from bittern

A process for preparing superhigh-purity magnesium sand from bittern includes addition of ammonia solution as precipitant to bittern to generate precipitate of magnesium hydroxide, light burning to obtain magnesium oxide, shaping, and calcining at 1500-1600 deg.C, and features high magnesium content...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHONGHUAI ZHOU, LIJUN XU, XINGJUN LIU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
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Beschreibung
Zusammenfassung:A process for preparing superhigh-purity magnesium sand from bittern includes addition of ammonia solution as precipitant to bittern to generate precipitate of magnesium hydroxide, light burning to obtain magnesium oxide, shaping, and calcining at 1500-1600 deg.C, and features high magnesium content in bittern, direct light burning of magnesium hydroxide without washing, use of the mother liquid after precipitation to prepare ammonia solution for reusing it three times, low calcine temp, high purity of product.