PREPARATION DE PARTICULES MINERALES EN MILIEU CO2 SUPERCRITIQUE

The present invention relates to a process for preparing mineral particles (p) from mineral species precursors, said process comprising a step (E) in which a fluid medium (F) containing said precursors in solution and/or dispersed in a solvent is injected into a reactor containing CO2 in the supercr...

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Bibliographische Detailangaben
Hauptverfasser:	MULLER THIERRY, MASQUELEZ NATHALIE, MAZOYER JOEL, SALA BEATRICE, COT DIDIER, JULBE ANNE, GUILLERMIER PIERRE, WILLEMIN STEPHANIE
Format:	Patent
Sprache:	fre
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F COMPOUNDS THEREOF CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS REFRACTORIES SLAG THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The present invention relates to a process for preparing mineral particles (p) from mineral species precursors, said process comprising a step (E) in which a fluid medium (F) containing said precursors in solution and/or dispersed in a solvent is injected into a reactor containing CO2 in the supercritical state by way of an injection nozzle opening into a zone where the supercritical CO2 is at a temperature greater than or equal to the temperature for conversion of the precursors into corresponding mineral species. The invention also relates to the particles (p) as obtained by the process, as well as uses thereof.