PRODUCTION OF ALPHA TYPE HEMIHYDRATE GYPSUM
PURPOSE:To obtain alpha type hemihydrate gypsum at
Gespeichert in:
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| creator | SATO MINORU SHINODA NAOHARU TATANI ATSUSHI OGURO TAKETOSHI TSUTSUI KOYO INOUE TOSHIO |
| description | PURPOSE:To obtain alpha type hemihydrate gypsum at |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JPH02129050A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JPH02129050A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JPH02129050A3</originalsourceid><addsrcrecordid>eNrjZNAOCPJ3CXUO8fT3U_B3U3D0CfBwVAiJDHBV8HD19fSIdAlyDHFVcI8MCA715WFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8V4BHgZGhkaWBqYGjsbEqAEAiPIlNw</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>PRODUCTION OF ALPHA TYPE HEMIHYDRATE GYPSUM</title><source>esp@cenet</source><creator>SATO MINORU ; SHINODA NAOHARU ; TATANI ATSUSHI ; OGURO TAKETOSHI ; TSUTSUI KOYO ; INOUE TOSHIO</creator><creatorcontrib>SATO MINORU ; SHINODA NAOHARU ; TATANI ATSUSHI ; OGURO TAKETOSHI ; TSUTSUI KOYO ; INOUE TOSHIO</creatorcontrib><description>PURPOSE:To obtain alpha type hemihydrate gypsum at <=100 deg.C and ordinary pressure using an inexpensive apparatus by subjecting alpha type hemihydrate gypsum drawn out from a reactor to gas-liquid separation, solid-liquid separation and utilization of heat source as heating use and drying use. CONSTITUTION:In a method subjecting a dihydrated gypsum slurry to pressure hydrothermal treatment at temperature exceeding 100 deg.C in a reactor and transferring the slurry to alpha type hemihydrate gypsum, the slurry is treated as follows: (1) alpha Type hemihydrate gypsum slurry drawn out from the reactor is led to a flash tank, where the slurry is subjected to gas-liquid separation into flash steam and alpha type hemihydrate gypsum while retaining conditions of temperature and time without causing dihydration of alpha type hemihydration. (2) Then the slurry is subjected to solid-liquid separation into cleaned liquid and alpha type hemihydrate gypsum cake while retaining conditions of temperature and time without causing dihydration of alpha type hemihydrate gypsum at ordinary pressure. (3) The above-mentioned flash stream is utilized as at least one heat source in heat sources for heating the dihydrated gypsum slurry and for drying the above-mentioned hemihydrate gypsum.</description><language>eng</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; 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 ; INORGANIC CHEMISTRY ; LIME, MAGNESIA ; METALLURGY ; REFRACTORIES ; SLAG ; TREATMENT OF NATURAL STONE</subject><creationdate>1990</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19900517&DB=EPODOC&CC=JP&NR=H02129050A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19900517&DB=EPODOC&CC=JP&NR=H02129050A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SATO MINORU</creatorcontrib><creatorcontrib>SHINODA NAOHARU</creatorcontrib><creatorcontrib>TATANI ATSUSHI</creatorcontrib><creatorcontrib>OGURO TAKETOSHI</creatorcontrib><creatorcontrib>TSUTSUI KOYO</creatorcontrib><creatorcontrib>INOUE TOSHIO</creatorcontrib><title>PRODUCTION OF ALPHA TYPE HEMIHYDRATE GYPSUM</title><description>PURPOSE:To obtain alpha type hemihydrate gypsum at <=100 deg.C and ordinary pressure using an inexpensive apparatus by subjecting alpha type hemihydrate gypsum drawn out from a reactor to gas-liquid separation, solid-liquid separation and utilization of heat source as heating use and drying use. CONSTITUTION:In a method subjecting a dihydrated gypsum slurry to pressure hydrothermal treatment at temperature exceeding 100 deg.C in a reactor and transferring the slurry to alpha type hemihydrate gypsum, the slurry is treated as follows: (1) alpha Type hemihydrate gypsum slurry drawn out from the reactor is led to a flash tank, where the slurry is subjected to gas-liquid separation into flash steam and alpha type hemihydrate gypsum while retaining conditions of temperature and time without causing dihydration of alpha type hemihydration. (2) Then the slurry is subjected to solid-liquid separation into cleaned liquid and alpha type hemihydrate gypsum cake while retaining conditions of temperature and time without causing dihydration of alpha type hemihydrate gypsum at ordinary pressure. (3) The above-mentioned flash stream is utilized as at least one heat source in heat sources for heating the dihydrated gypsum slurry and for drying the above-mentioned hemihydrate gypsum.</description><subject>ARTIFICIAL STONE</subject><subject>CEMENTS</subject><subject>CERAMICS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</subject><subject>COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS</subject><subject>CONCRETE</subject><subject>INORGANIC CHEMISTRY</subject><subject>LIME, MAGNESIA</subject><subject>METALLURGY</subject><subject>REFRACTORIES</subject><subject>SLAG</subject><subject>TREATMENT OF NATURAL STONE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1990</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNAOCPJ3CXUO8fT3U_B3U3D0CfBwVAiJDHBV8HD19fSIdAlyDHFVcI8MCA715WFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8V4BHgZGhkaWBqYGjsbEqAEAiPIlNw</recordid><startdate>19900517</startdate><enddate>19900517</enddate><creator>SATO MINORU</creator><creator>SHINODA NAOHARU</creator><creator>TATANI ATSUSHI</creator><creator>OGURO TAKETOSHI</creator><creator>TSUTSUI KOYO</creator><creator>INOUE TOSHIO</creator><scope>EVB</scope></search><sort><creationdate>19900517</creationdate><title>PRODUCTION OF ALPHA TYPE HEMIHYDRATE GYPSUM</title><author>SATO MINORU ; SHINODA NAOHARU ; TATANI ATSUSHI ; OGURO TAKETOSHI ; TSUTSUI KOYO ; INOUE TOSHIO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH02129050A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1990</creationdate><topic>ARTIFICIAL STONE</topic><topic>CEMENTS</topic><topic>CERAMICS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</topic><topic>COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS</topic><topic>CONCRETE</topic><topic>INORGANIC CHEMISTRY</topic><topic>LIME, MAGNESIA</topic><topic>METALLURGY</topic><topic>REFRACTORIES</topic><topic>SLAG</topic><topic>TREATMENT OF NATURAL STONE</topic><toplevel>online_resources</toplevel><creatorcontrib>SATO MINORU</creatorcontrib><creatorcontrib>SHINODA NAOHARU</creatorcontrib><creatorcontrib>TATANI ATSUSHI</creatorcontrib><creatorcontrib>OGURO TAKETOSHI</creatorcontrib><creatorcontrib>TSUTSUI KOYO</creatorcontrib><creatorcontrib>INOUE TOSHIO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SATO MINORU</au><au>SHINODA NAOHARU</au><au>TATANI ATSUSHI</au><au>OGURO TAKETOSHI</au><au>TSUTSUI KOYO</au><au>INOUE TOSHIO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PRODUCTION OF ALPHA TYPE HEMIHYDRATE GYPSUM</title><date>1990-05-17</date><risdate>1990</risdate><abstract>PURPOSE:To obtain alpha type hemihydrate gypsum at <=100 deg.C and ordinary pressure using an inexpensive apparatus by subjecting alpha type hemihydrate gypsum drawn out from a reactor to gas-liquid separation, solid-liquid separation and utilization of heat source as heating use and drying use. CONSTITUTION:In a method subjecting a dihydrated gypsum slurry to pressure hydrothermal treatment at temperature exceeding 100 deg.C in a reactor and transferring the slurry to alpha type hemihydrate gypsum, the slurry is treated as follows: (1) alpha Type hemihydrate gypsum slurry drawn out from the reactor is led to a flash tank, where the slurry is subjected to gas-liquid separation into flash steam and alpha type hemihydrate gypsum while retaining conditions of temperature and time without causing dihydration of alpha type hemihydration. (2) Then the slurry is subjected to solid-liquid separation into cleaned liquid and alpha type hemihydrate gypsum cake while retaining conditions of temperature and time without causing dihydration of alpha type hemihydrate gypsum at ordinary pressure. (3) The above-mentioned flash stream is utilized as at least one heat source in heat sources for heating the dihydrated gypsum slurry and for drying the above-mentioned hemihydrate gypsum.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS 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 INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE |
| title | PRODUCTION OF ALPHA TYPE HEMIHYDRATE GYPSUM |
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