Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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NORD PAS CALAIS HOUILLERES
Original Assignee
NORD PAS CALAIS HOUILLERES
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Publication date
Application filed by NORD PAS CALAIS HOUILLERESfiledCriticalNORD PAS CALAIS HOUILLERES
Priority to FR7209611ApriorityCriticalpatent/FR2177126A5/fr
Application grantedgrantedCritical
Publication of FR2177126A5publicationCriticalpatent/FR2177126A5/fr
C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
C04B11/00—Calcium sulfate cements
C04B11/02—Methods and apparatus for dehydrating gypsum
C—CHEMISTRY; METALLURGY
C01—INORGANIC CHEMISTRY
C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
C01F11/00—Compounds of calcium, strontium, or barium
C01F11/46—Sulfates
C01F11/466—Conversion of one form of calcium sulfate to another