Method for increasing the purity of basic magnesium carbonate from seawater

Method for increasing the purity of basic magnesium carbonate from seawater

A method for increasing the purity of basic magnesium carbonate from seawater comprises: using electrodiolysis to remove monovalent cations and chlorine ions (chlorine ions will affect subsequent removal of calcium ions), using precipitation-filtration to remove calcium ions, adding a soluble carbon...

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Bibliographische Detailangaben
Hauptverfasser: CHANG, I-LONG, JIANG, YU-LIN, SHIU, FRANK JE-YUAN, LIN, JIUNN-REN
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 method for increasing the purity of basic magnesium carbonate from seawater comprises: using electrodiolysis to remove monovalent cations and chlorine ions (chlorine ions will affect subsequent removal of calcium ions), using precipitation-filtration to remove calcium ions, adding a soluble carbonate into the solution to precipitate magnesium carbonate, and introducing carbon dioxide into the mixture of magnesium carbonate and water to precipitate basic magnesium carbonate precipitation with a purity of upto 99.9%.