NL8204778A - Werkwijze voor het bereiden van ferromagnetische oxyden. - Google Patents

Werkwijze voor het bereiden van ferromagnetische oxyden. Download PDF

Info

Publication number: NL8204778A
Authority: NL; Netherlands
Prior art keywords: suspension; solution; oxides; roasting; iron oxide
Prior art date: 1981-12-09

Application number

NL8204778A

Other languages

English (en)

Dutch (nl)

Original Assignee

Japan Metals & Chem Co Ltd

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1981-12-09

Filing date

1982-12-09

Publication date

1983-07-01

1981-12-09 Priority claimed from JP56198199A external-priority patent/JPS5898903A/ja

1981-12-28 Priority claimed from JP21006681A external-priority patent/JPS58115027A/ja

1982-02-08 Priority claimed from JP1746782A external-priority patent/JPS58135132A/ja

1982-12-09 Application filed by Japan Metals & Chem Co Ltd filed Critical Japan Metals & Chem Co Ltd

1983-07-01 Publication of NL8204778A publication Critical patent/NL8204778A/nl

Links

238000000034 method Methods 0.000 title claims description 21
230000005294 ferromagnetic effect Effects 0.000 title claims description 4
UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 44
239000002245 particle Substances 0.000 claims description 27
239000000725 suspension Substances 0.000 claims description 26
239000008187 granular material Substances 0.000 claims description 25
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
150000003839 salts Chemical class 0.000 claims description 15
239000002253 acid Substances 0.000 claims description 14
238000002156 mixing Methods 0.000 claims description 14
239000000843 powder Substances 0.000 claims description 14
230000008569 process Effects 0.000 claims description 13
239000012298 atmosphere Substances 0.000 claims description 11
238000010438 heat treatment Methods 0.000 claims description 9
229910052748 manganese Inorganic materials 0.000 claims description 9
238000004519 manufacturing process Methods 0.000 claims description 8
229910052751 metal Inorganic materials 0.000 claims description 8
239000002184 metal Substances 0.000 claims description 8
229910052759 nickel Inorganic materials 0.000 claims description 8
239000002002 slurry Substances 0.000 claims description 8
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
229910052749 magnesium Inorganic materials 0.000 claims description 7
239000001301 oxygen Substances 0.000 claims description 7
229910052760 oxygen Inorganic materials 0.000 claims description 7
229910052725 zinc Inorganic materials 0.000 claims description 7
229910052802 copper Inorganic materials 0.000 claims description 6
239000007787 solid Substances 0.000 claims description 6
150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 6
150000002823 nitrates Chemical class 0.000 claims description 4
238000005507 spraying Methods 0.000 claims description 4
238000009937 brining Methods 0.000 claims description 3
238000002360 preparation method Methods 0.000 claims description 3
239000003302 ferromagnetic material Substances 0.000 claims 2
150000003840 hydrochlorides Chemical class 0.000 claims 2
229910004298 SiO 2 Inorganic materials 0.000 claims 1
230000002378 acidificating effect Effects 0.000 claims 1
230000005307 ferromagnetism Effects 0.000 claims 1
150000002739 metals Chemical class 0.000 claims 1
239000012256 powdered iron Substances 0.000 claims 1
239000000243 solution Substances 0.000 description 31
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 29
239000000203 mixture Substances 0.000 description 26
229910000859 α-Fe Inorganic materials 0.000 description 26
235000013980 iron oxide Nutrition 0.000 description 22
239000011701 zinc Substances 0.000 description 12
150000001805 chlorine compounds Chemical class 0.000 description 11
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
239000011572 manganese Substances 0.000 description 9
238000000197 pyrolysis Methods 0.000 description 9
239000007789 gas Substances 0.000 description 8
229910052742 iron Inorganic materials 0.000 description 8
VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 8
239000000463 material Substances 0.000 description 7
229910021577 Iron(II) chloride Inorganic materials 0.000 description 6
239000010949 copper Substances 0.000 description 6
238000005469 granulation Methods 0.000 description 6
230000003179 granulation Effects 0.000 description 6
NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 6
239000011777 magnesium Substances 0.000 description 6
230000035699 permeability Effects 0.000 description 6
239000000126 substance Substances 0.000 description 6
238000011282 treatment Methods 0.000 description 6
229910002651 NO3 Inorganic materials 0.000 description 5
NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical group [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 5
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 5
238000006243 chemical reaction Methods 0.000 description 5
SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 5
238000007670 refining Methods 0.000 description 5
238000005245 sintering Methods 0.000 description 5
239000011780 sodium chloride Substances 0.000 description 5
239000007858 starting material Substances 0.000 description 5
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
229910000831 Steel Inorganic materials 0.000 description 4
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical group [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
150000001875 compounds Chemical class 0.000 description 4
238000001816 cooling Methods 0.000 description 4
230000004907 flux Effects 0.000 description 4
150000002500 ions Chemical class 0.000 description 4
JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
230000001590 oxidative effect Effects 0.000 description 4
239000007921 spray Substances 0.000 description 4
239000010959 steel Substances 0.000 description 4
239000011592 zinc chloride Substances 0.000 description 4
235000005074 zinc chloride Nutrition 0.000 description 4
JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
229910021578 Iron(III) chloride Inorganic materials 0.000 description 3
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
230000015572 biosynthetic process Effects 0.000 description 3
239000006227 byproduct Substances 0.000 description 3
239000013078 crystal Substances 0.000 description 3
229910001873 dinitrogen Inorganic materials 0.000 description 3
229910000358 iron sulfate Inorganic materials 0.000 description 3
RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 3
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
229910000357 manganese(II) sulfate Inorganic materials 0.000 description 3
238000000746 purification Methods 0.000 description 3
PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
150000008043 acidic salts Chemical class 0.000 description 2
150000007513 acids Chemical class 0.000 description 2
239000000654 additive Substances 0.000 description 2
239000011230 binding agent Substances 0.000 description 2
238000009835 boiling Methods 0.000 description 2
239000003054 catalyst Substances 0.000 description 2
229910017052 cobalt Inorganic materials 0.000 description 2
239000010941 cobalt Substances 0.000 description 2
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
238000007906 compression Methods 0.000 description 2
230000006835 compression Effects 0.000 description 2
239000012141 concentrate Substances 0.000 description 2
238000007796 conventional method Methods 0.000 description 2
238000000605 extraction Methods 0.000 description 2
238000001914 filtration Methods 0.000 description 2
239000010419 fine particle Substances 0.000 description 2
238000000227 grinding Methods 0.000 description 2
AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
239000012535 impurity Substances 0.000 description 2
239000007788 liquid Substances 0.000 description 2
229940099596 manganese sulfate Drugs 0.000 description 2
235000007079 manganese sulphate Nutrition 0.000 description 2
239000011702 manganese sulphate Substances 0.000 description 2
238000002844 melting Methods 0.000 description 2
230000008018 melting Effects 0.000 description 2
239000012299 nitrogen atmosphere Substances 0.000 description 2
239000000047 product Substances 0.000 description 2
238000001953 recrystallisation Methods 0.000 description 2
238000000859 sublimation Methods 0.000 description 2
230000008022 sublimation Effects 0.000 description 2
229910017344 Fe2 O3 Inorganic materials 0.000 description 1
PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 1
241000080590 Niso Species 0.000 description 1
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
239000004372 Polyvinyl alcohol Substances 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
239000004809 Teflon Substances 0.000 description 1
229920006362 Teflon® Polymers 0.000 description 1
238000010521 absorption reaction Methods 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
229910052782 aluminium Inorganic materials 0.000 description 1
BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
229910052921 ammonium sulfate Inorganic materials 0.000 description 1
235000011130 ammonium sulphate Nutrition 0.000 description 1
238000000889 atomisation Methods 0.000 description 1
239000012267 brine Substances 0.000 description 1
229910052791 calcium Inorganic materials 0.000 description 1
239000011575 calcium Substances 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
235000017168 chlorine Nutrition 0.000 description 1
125000001309 chloro group Chemical class Cl* 0.000 description 1
239000000470 constituent Substances 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
230000007423 decrease Effects 0.000 description 1
230000018044 dehydration Effects 0.000 description 1
238000006297 dehydration reaction Methods 0.000 description 1
230000001627 detrimental effect Effects 0.000 description 1
238000007865 diluting Methods 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
230000009969 flowable effect Effects 0.000 description 1
239000012530 fluid Substances 0.000 description 1
229910052595 hematite Inorganic materials 0.000 description 1
239000011019 hematite Substances 0.000 description 1
229910052909 inorganic silicate Inorganic materials 0.000 description 1
-1 ion hydroxides Chemical class 0.000 description 1
FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
229910001425 magnesium ion Inorganic materials 0.000 description 1
230000005291 magnetic effect Effects 0.000 description 1
238000007885 magnetic separation Methods 0.000 description 1
229910001437 manganese ion Inorganic materials 0.000 description 1
229910001510 metal chloride Inorganic materials 0.000 description 1
238000006386 neutralization reaction Methods 0.000 description 1
229910017604 nitric acid Inorganic materials 0.000 description 1
AHKZTVQIVOEVFO-UHFFFAOYSA-N oxide(2-) Chemical compound [O-2] AHKZTVQIVOEVFO-UHFFFAOYSA-N 0.000 description 1
229920002451 polyvinyl alcohol Polymers 0.000 description 1
238000002203 pretreatment Methods 0.000 description 1
230000009257 reactivity Effects 0.000 description 1
239000012266 salt solution Substances 0.000 description 1
HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
229910052596 spinel Inorganic materials 0.000 description 1
239000011029 spinel Substances 0.000 description 1
229910052566 spinel group Inorganic materials 0.000 description 1
229910021653 sulphate ion Inorganic materials 0.000 description 1
229910052719 titanium Inorganic materials 0.000 description 1
229910052720 vanadium Inorganic materials 0.000 description 1
210000003462 vein Anatomy 0.000 description 1
238000005406 washing Methods 0.000 description 1
239000002912 waste gas Substances 0.000 description 1
230000004580 weight loss Effects 0.000 description 1
229910052726 zirconium Inorganic materials 0.000 description 1

Classifications

- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
- C01G49/0072—Mixed oxides or hydroxides containing manganese
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
- C01G49/0036—Mixed oxides or hydroxides containing one alkaline earth metal, magnesium or lead
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
- C01G49/0045—Mixed oxides or hydroxides containing aluminium
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/88—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by thermal analysis data, e.g. TGA, DTA, DSC

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Dispersion Chemistry (AREA)
Engineering & Computer Science (AREA)
Power Engineering (AREA)
Life Sciences & Earth Sciences (AREA)
General Life Sciences & Earth Sciences (AREA)
Geology (AREA)
Compounds Of Iron (AREA)
Soft Magnetic Materials (AREA)

NL8204778A 1981-12-09 1982-12-09 Werkwijze voor het bereiden van ferromagnetische oxyden. NL8204778A (nl)

Applications Claiming Priority (6)

Application Number	Priority Date	Filing Date	Title
JP19819981		1981-12-09
JP56198199A JPS5898903A (ja)	1981-12-09	1981-12-09	酸化物強磁性体の製造法
JP21006681A JPS58115027A (ja)	1981-12-28	1981-12-28	酸化物磁性体及製造法
JP21006681		1981-12-28
JP1746782A JPS58135132A (ja)	1982-02-08	1982-02-08	強磁性酸化物およびその製造法
JP1746782		1982-02-08

Publications (1)

Publication Number	Publication Date
NL8204778A true NL8204778A (nl)	1983-07-01

Family

ID=27281841

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL8204778A NL8204778A (nl)	1981-12-09	1982-12-09	Werkwijze voor het bereiden van ferromagnetische oxyden.

Country Status (2)

Country	Link
DE (1)	DE3245635A1 (de)
NL (1)	NL8204778A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3633130A1 (de) *	1986-09-30	1988-03-31	Basf Ag	Feinteilige, sphaerische, zweischichtige feststoffteilchen
CN116864293B (zh) *	2023-08-02	2024-05-24	山东春光磁电科技有限公司	一种高频铁氧体材料制备工艺

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL7004295A (de) *	1969-05-07	1970-11-10

1982
- 1982-12-09 DE DE19823245635 patent/DE3245635A1/de not_active Ceased
- 1982-12-09 NL NL8204778A patent/NL8204778A/nl not_active Application Discontinuation

Also Published As

Publication number	Publication date
DE3245635A1 (de)	1983-06-16

Publication	Publication Date	Title
DE2105932C3 (de)	1975-04-17	Agglomerieren von eisenhaltigen Titanerzen
US4097392A (en)	1978-06-27	Coprecipitation methods and manufacture of soft ferrite materials and cores
US4372865A (en)	1983-02-08	Carbonate/hydroxide coprecipitation process
US3428416A (en)	1969-02-18	Method of manufacturing ferrites
USRE29598E (en)	1978-03-28	Method for recovering vanadium-values from vanadium-bearing iron ores and iron ore concentrates
US5190740A (en)	1993-03-02	Method producing composite oxides for use as starting materials for producing ferrites
US3318685A (en)	1967-05-09	Calcium chloride treatment of oxygen-process steel fume
NL8204778A (nl)	1983-07-01	Werkwijze voor het bereiden van ferromagnetische oxyden.
JPS58115027A (ja)	1983-07-08	酸化物磁性体及製造法
WO1994019283A1 (en)	1994-09-01	Soft ferrite raw material powder and sintered body thereof, and method for producing the same
López-Delgado et al.	1999	Synthesis of nickel–chromium–zinc ferrite powders from stainless steel pickling liquors
JPH0733442A (ja)	1995-02-03	Ｍｎ−Ｚｎフェライトの製造方法
US5626788A (en)	1997-05-06	Production of magnetic oxide powder
JPH04219321A (ja)	1992-08-10	ソフトフェライト用の亜鉛原料及びこれを用いたソフトフェライト用原料酸化物の製造方法
JP3638659B2 (ja)	2005-04-13	ソフトフェライト用複合酸化物粉末の製造方法
CN111876607A (zh)	2020-11-03	一种电炉粉尘中铁、铬元素的浸出、富集及分离工艺
JPS6131601B2 (de)	1986-07-21
JPS59156901A (ja)	1984-09-06	金属酸化物回収工程の改良
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JP2746736B2 (ja)	1998-05-06	フェライト原料用複合酸化物の製造方法
JP3638654B2 (ja)	2005-04-13	フェライト粉末の製造方法
JP2849207B2 (ja)	1999-01-20	ソフトフェライト用原料酸化物の製造方法
JP2669010B2 (ja)	1997-10-27	金属塩溶液中の脱珪方法
JPH0397625A (ja)	1991-04-23	ソフトフェライト用原料酸化物の製造方法
JP2933763B2 (ja)	1999-08-16	ソフトフェライト用原料酸化物の製造方法

Legal Events

Date	Code	Title	Description
1984-12-17	CNR	Transfer of rights (patent application after its laying open for public inspection)	Free format text: JAPAN METALS AND CHEMICALS CO., LTD. EN MAGUNE CO.,
1985-01-01	A85	Still pending on 85-01-01
1990-02-01	BA	A request for search or an international-type search has been filed
1991-09-02	BB	A search report has been drawn up
1992-02-03	BC	A request for examination has been filed
1993-08-02	BV	The patent application has lapsed