APPARATUS AND METHOD FOR CALCINATION OF GYPSUM

[Object] Fluidization of a deposit of raw gypsum in a calciner is so improved as to prevent uneven calcination of calcined gypsum from occurring and reduce a fuel consumption of the calciner. [Solution] An apparatus for calcination of gypsum includes a gypsum calciner (1, 3-7) having an interior wal...

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Bibliographische Detailangaben
Hauptverfasser:	ENDO, Kazumi, NITOH, Kouji, NIIMI, Katsumi, TAKENAKA, Takeshi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS CONCRETE DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE DISPOSAL OF SOLID WASTE DRYING DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING INORGANIC CHEMISTRY KILNS LIGHTING LIME, MAGNESIA MECHANICAL ENGINEERING METALLURGY OPEN SINTERING OR LIKE APPARATUS OVENS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL RECLAMATION OF CONTAMINED SOIL SOIL REFRACTORIES RETORTS SLAG THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	[Object] Fluidization of a deposit of raw gypsum in a calciner is so improved as to prevent uneven calcination of calcined gypsum from occurring and reduce a fuel consumption of the calciner. [Solution] An apparatus for calcination of gypsum includes a gypsum calciner (1, 3-7) having an interior wall surface with a circular or annular configuration as seen in its plan view, and a tubular combustor (2) positioned at a center part of a body of the calciner. The raw gypsum (M) in the calciner is calcined or dehydrated by a high temperature gas spouting flow (Hg) ejected from a lower portion of the combustor. The calciner has a stationary-vane-type or movable-vane-type auxiliary device, which circumferentially energizes the raw gypsum in vicinity of the interior wall surface toward a circumferential direction of the calciner, or augments a movement of the raw gypsum therein toward the circumferential direction. The auxiliary device has a plurality of stationary vanes (10) circumferentially arranged in an outer peripheral zone of a lower portion of the combustor and spaced apart from each other at an angular interval, or an agitator (30) extending through a conical or inner circumferential surface defined by the interior wall surface.