METHOD AND APPARATUS FOR REGENERATING SAND-CLAY FOUNDARY SANDS
Regeneration of clay-bonded used foundry sand for reuse instead of new sand. A dry mass of used sand is rubbed for such a length of time, is accelerated suddenly and delayed, and is freed continuously of fine components, until the fine matter, active bonding clay and oolitization degree fall below c...
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| creator | FRANTS KHOFMANN,CH FRANTS ZATMER,CH |
| description | Regeneration of clay-bonded used foundry sand for reuse instead of new sand. A dry mass of used sand is rubbed for such a length of time, is accelerated suddenly and delayed, and is freed continuously of fine components, until the fine matter, active bonding clay and oolitization degree fall below certain threshold values such that the regenerated product substantially gains the characteristics of new sand. An apparatus for regeneration treatment contains a horizontal revolving sand drum (10), an impact rotor (30) disposed inside said drum in the area of the fall stream (46) of the used sand and a pneumatic dust removal device (36) disposed in the inside of the drum. A chemical secondary treatment of the regenerated product can be carried out advantageously in the same installation in order to bind remaining fine matter to the surface of the grains of sand and simultaneously to seal the pores of the grains. |
| format | Patent |
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A dry mass of used sand is rubbed for such a length of time, is accelerated suddenly and delayed, and is freed continuously of fine components, until the fine matter, active bonding clay and oolitization degree fall below certain threshold values such that the regenerated product substantially gains the characteristics of new sand. An apparatus for regeneration treatment contains a horizontal revolving sand drum (10), an impact rotor (30) disposed inside said drum in the area of the fall stream (46) of the used sand and a pneumatic dust removal device (36) disposed in the inside of the drum. A chemical secondary treatment of the regenerated product can be carried out advantageously in the same installation in order to bind remaining fine matter to the surface of the grains of sand and simultaneously to seal the pores of the grains.</description><language>eng</language><subject>CASTING ; CRUSHING, PULVERISING, OR DISINTEGRATING ; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL ; FOUNDRY MOULDING ; MILLING GRAIN ; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; POWDER METALLURGY ; PREPARATORY TREATMENT OF GRAIN FOR MILLING ; TRANSPORTING</subject><creationdate>1983</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=19831115&DB=EPODOC&CC=SU&NR=1055322A3$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19831115&DB=EPODOC&CC=SU&NR=1055322A3$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FRANTS KHOFMANN,CH</creatorcontrib><creatorcontrib>FRANTS ZATMER,CH</creatorcontrib><title>METHOD AND APPARATUS FOR REGENERATING SAND-CLAY FOUNDARY SANDS</title><description>Regeneration of clay-bonded used foundry sand for reuse instead of new sand. A dry mass of used sand is rubbed for such a length of time, is accelerated suddenly and delayed, and is freed continuously of fine components, until the fine matter, active bonding clay and oolitization degree fall below certain threshold values such that the regenerated product substantially gains the characteristics of new sand. An apparatus for regeneration treatment contains a horizontal revolving sand drum (10), an impact rotor (30) disposed inside said drum in the area of the fall stream (46) of the used sand and a pneumatic dust removal device (36) disposed in the inside of the drum. A chemical secondary treatment of the regenerated product can be carried out advantageously in the same installation in order to bind remaining fine matter to the surface of the grains of sand and simultaneously to seal the pores of the grains.</description><subject>CASTING</subject><subject>CRUSHING, PULVERISING, OR DISINTEGRATING</subject><subject>CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL</subject><subject>FOUNDRY MOULDING</subject><subject>MILLING GRAIN</subject><subject>MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>POWDER METALLURGY</subject><subject>PREPARATORY TREATMENT OF GRAIN FOR MILLING</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1983</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLDzdQ3x8HdRcPQD4oAAxyDHkNBgBTf_IIUgV3dXP1cg39PPXSEYKK_r7OMYCZQK9XNxDIoECwXzMLCmJeYUp_JCaW4GBTfXEGcP3dSC_PjU4oLE5NS81JL44FBDA1NTYyMjR2NjIpQAAAB0Kb8</recordid><startdate>19831115</startdate><enddate>19831115</enddate><creator>FRANTS KHOFMANN,CH</creator><creator>FRANTS ZATMER,CH</creator><scope>EVB</scope></search><sort><creationdate>19831115</creationdate><title>METHOD AND APPARATUS FOR REGENERATING SAND-CLAY FOUNDARY SANDS</title><author>FRANTS KHOFMANN,CH ; FRANTS ZATMER,CH</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_SU1055322A33</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1983</creationdate><topic>CASTING</topic><topic>CRUSHING, PULVERISING, OR DISINTEGRATING</topic><topic>CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL</topic><topic>FOUNDRY MOULDING</topic><topic>MILLING GRAIN</topic><topic>MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>POWDER METALLURGY</topic><topic>PREPARATORY TREATMENT OF GRAIN FOR MILLING</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>FRANTS KHOFMANN,CH</creatorcontrib><creatorcontrib>FRANTS ZATMER,CH</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FRANTS KHOFMANN,CH</au><au>FRANTS ZATMER,CH</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD AND APPARATUS FOR REGENERATING SAND-CLAY FOUNDARY SANDS</title><date>1983-11-15</date><risdate>1983</risdate><abstract>Regeneration of clay-bonded used foundry sand for reuse instead of new sand. A dry mass of used sand is rubbed for such a length of time, is accelerated suddenly and delayed, and is freed continuously of fine components, until the fine matter, active bonding clay and oolitization degree fall below certain threshold values such that the regenerated product substantially gains the characteristics of new sand. An apparatus for regeneration treatment contains a horizontal revolving sand drum (10), an impact rotor (30) disposed inside said drum in the area of the fall stream (46) of the used sand and a pneumatic dust removal device (36) disposed in the inside of the drum. A chemical secondary treatment of the regenerated product can be carried out advantageously in the same installation in order to bind remaining fine matter to the surface of the grains of sand and simultaneously to seal the pores of the grains.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | CASTING CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL FOUNDRY MOULDING MILLING GRAIN MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POWDER METALLURGY PREPARATORY TREATMENT OF GRAIN FOR MILLING TRANSPORTING |
| title | METHOD AND APPARATUS FOR REGENERATING SAND-CLAY FOUNDARY SANDS |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-12T04%3A58%3A59IST&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=FRANTS%20KHOFMANN,CH&rft.date=1983-11-15&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3ESU1055322A3%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 |