JPH0438691B2 - - Google Patents
Info
- Publication number
- JPH0438691B2 JPH0438691B2 JP5682187A JP5682187A JPH0438691B2 JP H0438691 B2 JPH0438691 B2 JP H0438691B2 JP 5682187 A JP5682187 A JP 5682187A JP 5682187 A JP5682187 A JP 5682187A JP H0438691 B2 JPH0438691 B2 JP H0438691B2
- Authority
- JP
- Japan
- Prior art keywords
- barium ferrite
- barium
- coprecipitate
- hexagonal plate
- shaped
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 39
- 159000000009 barium salts Chemical class 0.000 claims description 18
- 229910002588 FeOOH Inorganic materials 0.000 claims description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 16
- 238000010304 firing Methods 0.000 claims description 15
- 238000000975 co-precipitation Methods 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 238000006386 neutralization reaction Methods 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 4
- CZNCTWNLEIFMDX-UHFFFAOYSA-N [Fe].O=O Chemical compound [Fe].O=O CZNCTWNLEIFMDX-UHFFFAOYSA-N 0.000 claims description 3
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 claims description 3
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 21
- 239000000843 powder Substances 0.000 description 15
- 238000005406 washing Methods 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000003513 alkali Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052598 goethite Inorganic materials 0.000 description 6
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 6
- 229910000859 α-Fe Inorganic materials 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 229960004887 ferric hydroxide Drugs 0.000 description 4
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 3
- 229910001626 barium chloride Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000001027 hydrothermal synthesis Methods 0.000 description 3
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229960002089 ferrous chloride Drugs 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910006540 α-FeOOH Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910021577 Iron(II) chloride Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- -1 titanium and cobalt Chemical compound 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5682187A JPS63225534A (ja) | 1987-03-13 | 1987-03-13 | 六角板状バリウムフエライトの製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5682187A JPS63225534A (ja) | 1987-03-13 | 1987-03-13 | 六角板状バリウムフエライトの製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63225534A JPS63225534A (ja) | 1988-09-20 |
| JPH0438691B2 true JPH0438691B2 (enrdf_load_stackoverflow) | 1992-06-25 |
Family
ID=13038035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5682187A Granted JPS63225534A (ja) | 1987-03-13 | 1987-03-13 | 六角板状バリウムフエライトの製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63225534A (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03239307A (ja) * | 1990-02-16 | 1991-10-24 | Showa Denko Kk | 六角板状バリウムフェライトの製造方法 |
| JP2655200B2 (ja) * | 1990-08-24 | 1997-09-17 | 富士写真フイルム株式会社 | ハロゲン化銀写真感光材料 |
-
1987
- 1987-03-13 JP JP5682187A patent/JPS63225534A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63225534A (ja) | 1988-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR900007482B1 (ko) | 자기기록용 판상 바륨페라이트 입자 및 그의 제조방법 | |
| JPS5853688B2 (ja) | Ｆｅ−Ｍｇを主成分とする針状晶合金磁性粒子粉末の製造法 | |
| JPS62216922A (ja) | 磁気記録媒体用六万晶フエライト微粉末及びその製造法 | |
| JPH0438691B2 (enrdf_load_stackoverflow) | ||
| JP3428351B2 (ja) | 鉄を主成分とする紡錘状金属磁性粒子粉末及びその製造法 | |
| US5911905A (en) | Processes for producing hydrated iron oxide and ferromagnetic iron oxide | |
| US5358660A (en) | Magnetic particles for perpendicular magnetic recording | |
| JP2950892B2 (ja) | 六角板状バリウムフェライトの製造方法 | |
| JP5403242B2 (ja) | 磁気記録媒体用六方晶フェライト粒子粉末 | |
| JPH07172839A (ja) | 六方晶系Ｂａフェライト磁性粉の製造方法 | |
| JP2547000B2 (ja) | 磁気記録用強磁性微粉末 | |
| JPH03239307A (ja) | 六角板状バリウムフェライトの製造方法 | |
| JPH03265524A (ja) | 六角板状バリウムフェライトの製造方法 | |
| JPS6350326A (ja) | ヘマタイトの製造方法 | |
| JPH02133323A (ja) | マグネトプランバイト型フェライト磁性粉の製造方法 | |
| JP2796189B2 (ja) | 針状バリウムフェライト磁性粉の製造法 | |
| JP2577945B2 (ja) | バリウムフェライト磁性粉およびその製造方法 | |
| JPH01311418A (ja) | 垂直磁気記録用磁性粒子およびその製造方法 | |
| KR0136179B1 (ko) | 미립상 알파 산화철의 제조방법 | |
| JPH0314782B2 (enrdf_load_stackoverflow) | ||
| JPH03257802A (ja) | 六角板状バリウムフェライトの製造方法 | |
| JP2651795B2 (ja) | 磁気記録用強磁性微粉末の製造方法 | |
| JPS6126708A (ja) | 磁性金属粉末の製造方法 | |
| JPH04149031A (ja) | 針状バリウムフェライト磁性粉の製法 | |
| JPH01111728A (ja) | 六角板状バリウムフェライトの製造方法 |