PROCESS FOR OBTAINING MAGNESIUM ALUMINIUM SILICATES

Synthetic magnesium aluminosilicate consisting essentially by weight of 47-57% SiO2, 9-11% Al2O3, 3-5% MgO, 1-3% CaO, and less than 5% Na2O, balance water to total 100% calculated analytically. A process for manufacturing, comprising the steps of stirring into a first aqueous solution, containing th...

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Bibliographic Details
Main Authors SCHULTHESS A, FARINE J.C
Format Patent
LanguageEnglish
Published 31.12.1986
Edition2
Subjects
CHEMISTRY
COMPOUNDS THEREOF
HUMAN NECESSITIES
HYGIENE
INORGANIC CHEMISTRY
MEDICAL OR VETERINARY SCIENCE
METALLURGY
NON-METALLIC ELEMENTS
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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Summary:Synthetic magnesium aluminosilicate consisting essentially by weight of 47-57% SiO2, 9-11% Al2O3, 3-5% MgO, 1-3% CaO, and less than 5% Na2O, balance water to total 100% calculated analytically. A process for manufacturing, comprising the steps of stirring into a first aqueous solution, containing the corresponding amounts of magnesium sulfate and aluminum sulfate, a second aqueous solution containing sodium silicate and sodium hydroxide. thereafter adding a third aqueous solution containing a corresponding amount of calcium chloride, continuing the stirring, filtering off and washing the precipitate, and drying the precipitate at a temperature below 100 DEG C., or, instead of adding the third aqueous solution containing calcium chloride, by using lime water in the manufacturing process and for washing.
Bibliography:Application Number: YU19790002047