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Process for the treatment of a silicate mineral
The invention provides a process for the preparation of a second composition, said process comprising the steps of: -preparing a first compositioncomprising an alkali metal magnesium orthosilicate andoptionally either(i) magnesium oxide or(ii) an alkali metal silicate, byreaction, at a temperature from 500 to 1200°C, of an alkali metal carbonate compound, which compound is an alkali metal carbonate, an alkali metal bicarbonate or a mixture thereof, with a magnesium silicate, the molar ratio of alkali metal carbonate compound, expressed as alkali metal oxide of the formula R 2 O, in which R represents an alkali metal, to magnesium silicate, expressed as silicon dioxide, of the formula SiO 2, being from 4:1 to 1:4, and -contacting the first composition with water to produce thesecond composition comprising an amorphous magnesium silicate hydrate (M-S-H). It is possible to isolateor producefurther useful products from the second composition.
Process for the treatment of a silicate mineral
The invention provides a process for the preparation of a second composition, said process comprising the steps of: -preparing a first compositioncomprising an alkali metal magnesium orthosilicate andoptionally either(i) magnesium oxide or(ii) an alkali metal silicate, byreaction, at a temperature from 500 to 1200°C, of an alkali metal carbonate compound, which compound is an alkali metal carbonate, an alkali metal bicarbonate or a mixture thereof, with a magnesium silicate, the molar ratio of alkali metal carbonate compound, expressed as alkali metal oxide of the formula R 2 O, in which R represents an alkali metal, to magnesium silicate, expressed as silicon dioxide, of the formula SiO 2, being from 4:1 to 1:4, and -contacting the first composition with water to produce thesecond composition comprising an amorphous magnesium silicate hydrate (M-S-H). It is possible to isolateor producefurther useful products from the second composition.
Process for the treatment of a silicate mineral
PISCH ALEXANDER (author) / GARTNER ELLIS (author) / MEYER VINCENT (author)
2018-03-01
Patent
Electronic Resource
English
IPC:
B01D
SEPARATION
,
Trennen
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
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C01D
Verbindungen der Alkalimetalle, d.h. des Lithiums, Natriums, Kaliums, Rubidiums, Cäsiums oder Franciums
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COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
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C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
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Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
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C04B
Kalk
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LIME