JPS5917196B
PURPOSE:To produce metallic iron powder of needle crystals having excellent magnetic characteristics by adding an aq. silicic acid soln. and ammonia to an aq. goethite suspension to prepare an alkaline suspension, adding an org. acid thereto, separating and drying the flocs produced by said addition...
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| creator | ADACHI TAKAHITO YOSHIZAKI TAKAYOSHI |
| description | PURPOSE:To produce metallic iron powder of needle crystals having excellent magnetic characteristics by adding an aq. silicic acid soln. and ammonia to an aq. goethite suspension to prepare an alkaline suspension, adding an org. acid thereto, separating and drying the flocs produced by said addition, and reducing the flocs by heating in a reducing atmosphere. CONSTITUTION:An aq. silicic acid soln. and ammonia are added to an aq. goethite soln. to prepare an aq. goethite dispersion of 9.5-10.5pH. The goethite is contained at 2-6% concn. When an org. acid, for example, citric acid, oxalic acid or acetic acid is added to such aq. goethite dispersion to control its pH to 5-7, flocs are formed. The flocs are filtered and are dried at 120-125 deg.C. The dried flocs are reduced by heating to 400-600 deg.C in a reducing atmosphere. |
| format | Patent |
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CONSTITUTION:An aq. silicic acid soln. and ammonia are added to an aq. goethite soln. to prepare an aq. goethite dispersion of 9.5-10.5pH. The goethite is contained at 2-6% concn. When an org. acid, for example, citric acid, oxalic acid or acetic acid is added to such aq. goethite dispersion to control its pH to 5-7, flocs are formed. The flocs are filtered and are dried at 120-125 deg.C. The dried flocs are reduced by heating to 400-600 deg.C in a reducing atmosphere.</description><language>eng</language><subject>ADHESIVES ; BASIC ELECTRIC ELEMENTS ; CASTING ; CHEMICAL PAINT OR INK REMOVERS ; CHEMISTRY ; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS ; CORRECTING FLUIDS ; DYES ; ELECTRICITY ; FILLING PASTES ; INDUCTANCES ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; INKS ; MAGNETS ; MAKING METALLIC POWDER ; MANUFACTURE OF ARTICLES FROM METALLIC POWDER ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; PAINTS ; PASTES OR SOLIDS FOR COLOURING OR PRINTING ; PERFORMING OPERATIONS ; PHYSICS ; POLISHES ; POWDER METALLURGY ; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ; TRANSFORMERS ; TRANSPORTING ; USE OF MATERIALS THEREFOR ; WOODSTAINS ; WORKING METALLIC POWDER</subject><creationdate>1984</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=19840419&DB=EPODOC&CC=JP&NR=S5917196B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19840419&DB=EPODOC&CC=JP&NR=S5917196B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ADACHI TAKAHITO</creatorcontrib><creatorcontrib>YOSHIZAKI TAKAYOSHI</creatorcontrib><title>JPS5917196B</title><description>PURPOSE:To produce metallic iron powder of needle crystals having excellent magnetic characteristics by adding an aq. silicic acid soln. and ammonia to an aq. goethite suspension to prepare an alkaline suspension, adding an org. acid thereto, separating and drying the flocs produced by said addition, and reducing the flocs by heating in a reducing atmosphere. CONSTITUTION:An aq. silicic acid soln. and ammonia are added to an aq. goethite soln. to prepare an aq. goethite dispersion of 9.5-10.5pH. The goethite is contained at 2-6% concn. When an org. acid, for example, citric acid, oxalic acid or acetic acid is added to such aq. goethite dispersion to control its pH to 5-7, flocs are formed. The flocs are filtered and are dried at 120-125 deg.C. The dried flocs are reduced by heating to 400-600 deg.C in a reducing atmosphere.</description><subject>ADHESIVES</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CASTING</subject><subject>CHEMICAL PAINT OR INK REMOVERS</subject><subject>CHEMISTRY</subject><subject>COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS</subject><subject>CORRECTING FLUIDS</subject><subject>DYES</subject><subject>ELECTRICITY</subject><subject>FILLING PASTES</subject><subject>INDUCTANCES</subject><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>INKS</subject><subject>MAGNETS</subject><subject>MAKING METALLIC POWDER</subject><subject>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>PAINTS</subject><subject>PASTES OR SOLIDS FOR COLOURING OR PRINTING</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>POLISHES</subject><subject>POWDER METALLURGY</subject><subject>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</subject><subject>TRANSFORMERS</subject><subject>TRANSPORTING</subject><subject>USE OF MATERIALS THEREFOR</subject><subject>WOODSTAINS</subject><subject>WORKING METALLIC POWDER</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1984</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOD2Cgg2tTQ0N7Q0c-JhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFIOpyMjIlSBACJExyH</recordid><startdate>19840419</startdate><enddate>19840419</enddate><creator>ADACHI TAKAHITO</creator><creator>YOSHIZAKI TAKAYOSHI</creator><scope>EVB</scope></search><sort><creationdate>19840419</creationdate><title>JPS5917196B</title><author>ADACHI TAKAHITO ; YOSHIZAKI TAKAYOSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS5917196BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1984</creationdate><topic>ADHESIVES</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CASTING</topic><topic>CHEMICAL PAINT OR INK REMOVERS</topic><topic>CHEMISTRY</topic><topic>COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS</topic><topic>CORRECTING FLUIDS</topic><topic>DYES</topic><topic>ELECTRICITY</topic><topic>FILLING PASTES</topic><topic>INDUCTANCES</topic><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>INKS</topic><topic>MAGNETS</topic><topic>MAKING METALLIC POWDER</topic><topic>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>PAINTS</topic><topic>PASTES OR SOLIDS FOR COLOURING OR PRINTING</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>POLISHES</topic><topic>POWDER METALLURGY</topic><topic>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</topic><topic>TRANSFORMERS</topic><topic>TRANSPORTING</topic><topic>USE OF MATERIALS THEREFOR</topic><topic>WOODSTAINS</topic><topic>WORKING METALLIC POWDER</topic><toplevel>online_resources</toplevel><creatorcontrib>ADACHI TAKAHITO</creatorcontrib><creatorcontrib>YOSHIZAKI TAKAYOSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ADACHI TAKAHITO</au><au>YOSHIZAKI TAKAYOSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>JPS5917196B</title><date>1984-04-19</date><risdate>1984</risdate><abstract>PURPOSE:To produce metallic iron powder of needle crystals having excellent magnetic characteristics by adding an aq. silicic acid soln. and ammonia to an aq. goethite suspension to prepare an alkaline suspension, adding an org. acid thereto, separating and drying the flocs produced by said addition, and reducing the flocs by heating in a reducing atmosphere. CONSTITUTION:An aq. silicic acid soln. and ammonia are added to an aq. goethite soln. to prepare an aq. goethite dispersion of 9.5-10.5pH. The goethite is contained at 2-6% concn. When an org. acid, for example, citric acid, oxalic acid or acetic acid is added to such aq. goethite dispersion to control its pH to 5-7, flocs are formed. The flocs are filtered and are dried at 120-125 deg.C. The dried flocs are reduced by heating to 400-600 deg.C in a reducing atmosphere.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ADHESIVES BASIC ELECTRIC ELEMENTS CASTING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES ELECTRICITY FILLING PASTES INDUCTANCES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS MAGNETS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICS POLISHES POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WORKING METALLIC POWDER |
| title | JPS5917196B |
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