PRODUCTION OF MULTIPLE OXIDE POWDER FOR SOFT FERRITE FROM WASTE PLATING LIQUID
PROBLEM TO BE SOLVED: To provide a production method of a multiple oxide powder for a soft ferrite from a plating waste liq. as a source recycling method of a Fe and a Zn in a high concn. Fe-Zn based plating waste liq. SOLUTION: This method is composed of a stage in which a free sulfuric acid in the...
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| creator | MURATA SHIRO ICHINOSEKI TETSUNORI MORI TOSHIO HASHIMOTO KENJI UJIIE SHINICHI SETO YASUSHI |
| description | PROBLEM TO BE SOLVED: To provide a production method of a multiple oxide powder for a soft ferrite from a plating waste liq. as a source recycling method of a Fe and a Zn in a high concn. Fe-Zn based plating waste liq. SOLUTION: This method is composed of a stage in which a free sulfuric acid in the Fe-Zn based plating waste liq., is neutralized, and the liq. is further neutralized with an iron powder or an alkali agent to pH3-6 to insolubilize impurity such as Al, Cr, Si, P and heavy metal and the impurity is removed by filtration and separation, the stage in which one or >=2 kinds sulfide crystal or sulfide aq. soln. of Zn, Mn, Ni, Cu and Co are blended to this soln. so as to obtain a composition of a ferrite, then, water content is evaporated to obtain a metal sulfide mixed crystal, the stage in which this metal sulfide mixed crystal is heat-treated at a temp. range of 850-1,000 deg.C and the stage in which the powder obtained by the heat-treatment is washed to remove a sulfuric group or Mg, Ca and Na and the powder is dried. |
| format | Patent |
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Fe-Zn based plating waste liq. SOLUTION: This method is composed of a stage in which a free sulfuric acid in the Fe-Zn based plating waste liq., is neutralized, and the liq. is further neutralized with an iron powder or an alkali agent to pH3-6 to insolubilize impurity such as Al, Cr, Si, P and heavy metal and the impurity is removed by filtration and separation, the stage in which one or >=2 kinds sulfide crystal or sulfide aq. soln. of Zn, Mn, Ni, Cu and Co are blended to this soln. so as to obtain a composition of a ferrite, then, water content is evaporated to obtain a metal sulfide mixed crystal, the stage in which this metal sulfide mixed crystal is heat-treated at a temp. range of 850-1,000 deg.C and the stage in which the powder obtained by the heat-treatment is washed to remove a sulfuric group or Mg, Ca and Na and the powder is dried.</description><edition>6</edition><language>eng</language><subject>CHEMISTRY ; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ; INORGANIC CHEMISTRY ; METALLURGY ; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><creationdate>1997</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=19970225&DB=EPODOC&CC=JP&NR=H0952716A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970225&DB=EPODOC&CC=JP&NR=H0952716A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MURATA SHIRO</creatorcontrib><creatorcontrib>ICHINOSEKI TETSUNORI</creatorcontrib><creatorcontrib>MORI TOSHIO</creatorcontrib><creatorcontrib>HASHIMOTO KENJI</creatorcontrib><creatorcontrib>UJIIE SHINICHI</creatorcontrib><creatorcontrib>SETO YASUSHI</creatorcontrib><title>PRODUCTION OF MULTIPLE OXIDE POWDER FOR SOFT FERRITE FROM WASTE PLATING LIQUID</title><description>PROBLEM TO BE SOLVED: To provide a production method of a multiple oxide powder for a soft ferrite from a plating waste liq. as a source recycling method of a Fe and a Zn in a high concn. 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| subjects | CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F INORGANIC CHEMISTRY METALLURGY TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | PRODUCTION OF MULTIPLE OXIDE POWDER FOR SOFT FERRITE FROM WASTE PLATING LIQUID |
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