TREATING METHOD FOR MAKING Pb IN SLAG INSOLUBLE
PROBLEM TO BE SOLVED: To make Pb in slag produced in a steelmaking process containing Pb insoluble. SOLUTION: After separating or removing the slag produced in the steelmaking process and containing >=0.001 mass% Pb from the surface of molten steel, a heating treatment is applied to melt this sla...
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| creator | NAKAO RYUJI MORISHIGE HIROAKI MATSUNAMI TADANORI |
| description | PROBLEM TO BE SOLVED: To make Pb in slag produced in a steelmaking process containing Pb insoluble. SOLUTION: After separating or removing the slag produced in the steelmaking process and containing >=0.001 mass% Pb from the surface of molten steel, a heating treatment is applied to melt this slag, and thereafter, the slag composition is adjusted so s to satisfy the following formula (1). As the other way, after separating or removing this slag from the surface of molten steel, a stem aging treatment is performed for at least 5 days or an outdoor preservation is performed for at least 90 days. (T.CaO)/(SiO2) |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JP2002020815A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JP2002020815A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JP2002020815A3</originalsourceid><addsrcrecordid>eNrjZNAPCXJ1DPH0c1fwdQ3x8HdRcPMPUvB19AaJBCQpePopBPs4ugPpYH-fUCcfVx4G1rTEnOJUXijNzaDk5hri7KGbWpAfn1pckJicmpdaEu8VYGRgYASEFoamjsZEKQIAPFEmLA</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>TREATING METHOD FOR MAKING Pb IN SLAG INSOLUBLE</title><source>esp@cenet</source><creator>NAKAO RYUJI ; MORISHIGE HIROAKI ; MATSUNAMI TADANORI</creator><creatorcontrib>NAKAO RYUJI ; MORISHIGE HIROAKI ; MATSUNAMI TADANORI</creatorcontrib><description>PROBLEM TO BE SOLVED: To make Pb in slag produced in a steelmaking process containing Pb insoluble. SOLUTION: After separating or removing the slag produced in the steelmaking process and containing >=0.001 mass% Pb from the surface of molten steel, a heating treatment is applied to melt this slag, and thereafter, the slag composition is adjusted so s to satisfy the following formula (1). As the other way, after separating or removing this slag from the surface of molten steel, a stem aging treatment is performed for at least 5 days or an outdoor preservation is performed for at least 90 days. (T.CaO)/(SiO2)<=1.5...(1), wherein, (T.CaO): the concentration (mass%) converting total (Ca) contained in the slag into (CaO), (SiO2): SiO2 concentration in the slag. Thus, the Pb dissolving quantity from the slag satisfies an environmental standard value, and the slag can practically be used as a resource.</description><edition>7</edition><language>eng</language><subject>CHEMISTRY ; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; METALLURGY ; METALLURGY OF IRON ; PRETREATMENT OF RAW MATERIALS ; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL ; PRODUCTION AND REFINING OF METALS ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE ; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2002</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=20020123&DB=EPODOC&CC=JP&NR=2002020815A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020123&DB=EPODOC&CC=JP&NR=2002020815A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NAKAO RYUJI</creatorcontrib><creatorcontrib>MORISHIGE HIROAKI</creatorcontrib><creatorcontrib>MATSUNAMI TADANORI</creatorcontrib><title>TREATING METHOD FOR MAKING Pb IN SLAG INSOLUBLE</title><description>PROBLEM TO BE SOLVED: To make Pb in slag produced in a steelmaking process containing Pb insoluble. SOLUTION: After separating or removing the slag produced in the steelmaking process and containing >=0.001 mass% Pb from the surface of molten steel, a heating treatment is applied to melt this slag, and thereafter, the slag composition is adjusted so s to satisfy the following formula (1). As the other way, after separating or removing this slag from the surface of molten steel, a stem aging treatment is performed for at least 5 days or an outdoor preservation is performed for at least 90 days. (T.CaO)/(SiO2)<=1.5...(1), wherein, (T.CaO): the concentration (mass%) converting total (Ca) contained in the slag into (CaO), (SiO2): SiO2 concentration in the slag. Thus, the Pb dissolving quantity from the slag satisfies an environmental standard value, and the slag can practically be used as a resource.</description><subject>CHEMISTRY</subject><subject>CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</subject><subject>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>PRETREATMENT OF RAW MATERIALS</subject><subject>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</subject><subject>PRODUCTION AND REFINING OF METALS</subject><subject>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</subject><subject>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</subject><subject>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNAPCXJ1DPH0c1fwdQ3x8HdRcPMPUvB19AaJBCQpePopBPs4ugPpYH-fUCcfVx4G1rTEnOJUXijNzaDk5hri7KGbWpAfn1pckJicmpdaEu8VYGRgYASEFoamjsZEKQIAPFEmLA</recordid><startdate>20020123</startdate><enddate>20020123</enddate><creator>NAKAO RYUJI</creator><creator>MORISHIGE HIROAKI</creator><creator>MATSUNAMI TADANORI</creator><scope>EVB</scope></search><sort><creationdate>20020123</creationdate><title>TREATING METHOD FOR MAKING Pb IN SLAG INSOLUBLE</title><author>NAKAO RYUJI ; MORISHIGE HIROAKI ; MATSUNAMI TADANORI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2002020815A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2002</creationdate><topic>CHEMISTRY</topic><topic>CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</topic><topic>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>PRETREATMENT OF RAW MATERIALS</topic><topic>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</topic><topic>PRODUCTION AND REFINING OF METALS</topic><topic>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</topic><topic>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</topic><topic>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>NAKAO RYUJI</creatorcontrib><creatorcontrib>MORISHIGE HIROAKI</creatorcontrib><creatorcontrib>MATSUNAMI TADANORI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NAKAO RYUJI</au><au>MORISHIGE HIROAKI</au><au>MATSUNAMI TADANORI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>TREATING METHOD FOR MAKING Pb IN SLAG INSOLUBLE</title><date>2002-01-23</date><risdate>2002</risdate><abstract>PROBLEM TO BE SOLVED: To make Pb in slag produced in a steelmaking process containing Pb insoluble. SOLUTION: After separating or removing the slag produced in the steelmaking process and containing >=0.001 mass% Pb from the surface of molten steel, a heating treatment is applied to melt this slag, and thereafter, the slag composition is adjusted so s to satisfy the following formula (1). As the other way, after separating or removing this slag from the surface of molten steel, a stem aging treatment is performed for at least 5 days or an outdoor preservation is performed for at least 90 days. (T.CaO)/(SiO2)<=1.5...(1), wherein, (T.CaO): the concentration (mass%) converting total (Ca) contained in the slag into (CaO), (SiO2): SiO2 concentration in the slag. Thus, the Pb dissolving quantity from the slag satisfies an environmental standard value, and the slag can practically be used as a resource.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY METALLURGY OF IRON PRETREATMENT OF RAW MATERIALS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | TREATING METHOD FOR MAKING Pb IN SLAG INSOLUBLE |
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