VERFAHREN ZUR HERSTELLUNG VON NATRIUMSILIKATEN

VERFAHREN ZUR HERSTELLUNG VON NATRIUMSILIKATEN

For the preparation of amorphous sodium silicates having a water content from 0.3 to 6% by weight and an SiO2/Na2O molar ratio of (1.9 to 2.8):1 from a waterglass solution obtained by reacting sand with sodium hydroxide solution in an SiO2/Na2O molar ratio of (2.0 to 2.8):1 and having a solids conte...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: WINGEFELD, GERD, TAPPER, ALEXANDER, KOTZIAN, MICHAEL, SCHIMMEL, GUENTHER
Format: Patent
Sprache:ger
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator WINGEFELD, GERD
TAPPER, ALEXANDER
KOTZIAN, MICHAEL
SCHIMMEL, GUENTHER
description For the preparation of amorphous sodium silicates having a water content from 0.3 to 6% by weight and an SiO2/Na2O molar ratio of (1.9 to 2.8):1 from a waterglass solution obtained by reacting sand with sodium hydroxide solution in an SiO2/Na2O molar ratio of (2.0 to 2.8):1 and having a solids content of at least 20% by weight, the waterglass solution is treated in a spray-drying zone with hot air at 200 to 300 DEG C to form a pulverulent, amorphous sodium silicate having a water content (determined as loss on ignition at 700 DEG C) of 15 to 23% by weight. The spray-dried, pulverulent, amorphous sodium silicate is first ground, preferably to grain sizes of 1 to 50 mu m, before it is introduced into a rotary kiln in an inclined arrangement and treated therein with flue gas in countercurrent at temperatures of 250 to 500 DEG C to form pulverulent, amorphous sodium silicate. The sodium silicate emerging from the rotary kiln is comminuted to grain sizes of 0.1 to 12 mm and finally ground to grain sizes of 2 to 400 mu m.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_ATE110696TT1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>ATE110696TT1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_ATE110696TT13</originalsourceid><addsrcrecordid>eNrjZNALcw1yc_QIcvVTiAoNUvBwDQoOcfXxCfVzVwjz91PwcwwJ8gz1Dfb08fR2DHH142FgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8UClhoYGZpZmISGGxsSoAQAmvybL</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>VERFAHREN ZUR HERSTELLUNG VON NATRIUMSILIKATEN</title><source>esp@cenet</source><creator>WINGEFELD, GERD ; TAPPER, ALEXANDER ; KOTZIAN, MICHAEL ; SCHIMMEL, GUENTHER</creator><creatorcontrib>WINGEFELD, GERD ; TAPPER, ALEXANDER ; KOTZIAN, MICHAEL ; SCHIMMEL, GUENTHER</creatorcontrib><description>For the preparation of amorphous sodium silicates having a water content from 0.3 to 6% by weight and an SiO2/Na2O molar ratio of (1.9 to 2.8):1 from a waterglass solution obtained by reacting sand with sodium hydroxide solution in an SiO2/Na2O molar ratio of (2.0 to 2.8):1 and having a solids content of at least 20% by weight, the waterglass solution is treated in a spray-drying zone with hot air at 200 to 300 DEG C to form a pulverulent, amorphous sodium silicate having a water content (determined as loss on ignition at 700 DEG C) of 15 to 23% by weight. The spray-dried, pulverulent, amorphous sodium silicate is first ground, preferably to grain sizes of 1 to 50 mu m, before it is introduced into a rotary kiln in an inclined arrangement and treated therein with flue gas in countercurrent at temperatures of 250 to 500 DEG C to form pulverulent, amorphous sodium silicate. The sodium silicate emerging from the rotary kiln is comminuted to grain sizes of 0.1 to 12 mm and finally ground to grain sizes of 2 to 400 mu m.</description><edition>5</edition><language>ger</language><subject>CHEMISTRY ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS</subject><creationdate>1994</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&amp;date=19940915&amp;DB=EPODOC&amp;CC=AT&amp;NR=E110696T1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19940915&amp;DB=EPODOC&amp;CC=AT&amp;NR=E110696T1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WINGEFELD, GERD</creatorcontrib><creatorcontrib>TAPPER, ALEXANDER</creatorcontrib><creatorcontrib>KOTZIAN, MICHAEL</creatorcontrib><creatorcontrib>SCHIMMEL, GUENTHER</creatorcontrib><title>VERFAHREN ZUR HERSTELLUNG VON NATRIUMSILIKATEN</title><description>For the preparation of amorphous sodium silicates having a water content from 0.3 to 6% by weight and an SiO2/Na2O molar ratio of (1.9 to 2.8):1 from a waterglass solution obtained by reacting sand with sodium hydroxide solution in an SiO2/Na2O molar ratio of (2.0 to 2.8):1 and having a solids content of at least 20% by weight, the waterglass solution is treated in a spray-drying zone with hot air at 200 to 300 DEG C to form a pulverulent, amorphous sodium silicate having a water content (determined as loss on ignition at 700 DEG C) of 15 to 23% by weight. The spray-dried, pulverulent, amorphous sodium silicate is first ground, preferably to grain sizes of 1 to 50 mu m, before it is introduced into a rotary kiln in an inclined arrangement and treated therein with flue gas in countercurrent at temperatures of 250 to 500 DEG C to form pulverulent, amorphous sodium silicate. The sodium silicate emerging from the rotary kiln is comminuted to grain sizes of 0.1 to 12 mm and finally ground to grain sizes of 2 to 400 mu m.</description><subject>CHEMISTRY</subject><subject>COMPOUNDS THEREOF</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1994</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNALcw1yc_QIcvVTiAoNUvBwDQoOcfXxCfVzVwjz91PwcwwJ8gz1Dfb08fR2DHH142FgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8UClhoYGZpZmISGGxsSoAQAmvybL</recordid><startdate>19940915</startdate><enddate>19940915</enddate><creator>WINGEFELD, GERD</creator><creator>TAPPER, ALEXANDER</creator><creator>KOTZIAN, MICHAEL</creator><creator>SCHIMMEL, GUENTHER</creator><scope>EVB</scope></search><sort><creationdate>19940915</creationdate><title>VERFAHREN ZUR HERSTELLUNG VON NATRIUMSILIKATEN</title><author>WINGEFELD, GERD ; TAPPER, ALEXANDER ; KOTZIAN, MICHAEL ; SCHIMMEL, GUENTHER</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_ATE110696TT13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>ger</language><creationdate>1994</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS THEREOF</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><toplevel>online_resources</toplevel><creatorcontrib>WINGEFELD, GERD</creatorcontrib><creatorcontrib>TAPPER, ALEXANDER</creatorcontrib><creatorcontrib>KOTZIAN, MICHAEL</creatorcontrib><creatorcontrib>SCHIMMEL, GUENTHER</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WINGEFELD, GERD</au><au>TAPPER, ALEXANDER</au><au>KOTZIAN, MICHAEL</au><au>SCHIMMEL, GUENTHER</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>VERFAHREN ZUR HERSTELLUNG VON NATRIUMSILIKATEN</title><date>1994-09-15</date><risdate>1994</risdate><abstract>For the preparation of amorphous sodium silicates having a water content from 0.3 to 6% by weight and an SiO2/Na2O molar ratio of (1.9 to 2.8):1 from a waterglass solution obtained by reacting sand with sodium hydroxide solution in an SiO2/Na2O molar ratio of (2.0 to 2.8):1 and having a solids content of at least 20% by weight, the waterglass solution is treated in a spray-drying zone with hot air at 200 to 300 DEG C to form a pulverulent, amorphous sodium silicate having a water content (determined as loss on ignition at 700 DEG C) of 15 to 23% by weight. The spray-dried, pulverulent, amorphous sodium silicate is first ground, preferably to grain sizes of 1 to 50 mu m, before it is introduced into a rotary kiln in an inclined arrangement and treated therein with flue gas in countercurrent at temperatures of 250 to 500 DEG C to form pulverulent, amorphous sodium silicate. The sodium silicate emerging from the rotary kiln is comminuted to grain sizes of 0.1 to 12 mm and finally ground to grain sizes of 2 to 400 mu m.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language ger
recordid cdi_epo_espacenet_ATE110696TT1
source esp@cenet
subjects CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
title VERFAHREN ZUR HERSTELLUNG VON NATRIUMSILIKATEN
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-26T11%3A57%3A23IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=WINGEFELD,%20GERD&rft.date=1994-09-15&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EATE110696TT1%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true