JPH0580413B2 - - Google Patents
Info
- Publication number
- JPH0580413B2 JPH0580413B2 JP60071762A JP7176285A JPH0580413B2 JP H0580413 B2 JPH0580413 B2 JP H0580413B2 JP 60071762 A JP60071762 A JP 60071762A JP 7176285 A JP7176285 A JP 7176285A JP H0580413 B2 JPH0580413 B2 JP H0580413B2
- Authority
- JP
- Japan
- Prior art keywords
- particles
- aqueous solution
- spherical
- maghemite
- ferrous
- 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 - Fee Related
Links
- 239000002245 particle Substances 0.000 claims description 142
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 51
- 239000007864 aqueous solution Substances 0.000 claims description 49
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 39
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 37
- 239000000843 powder Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 10
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims description 9
- 239000000084 colloidal system Substances 0.000 claims description 9
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 claims description 9
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 230000001747 exhibiting effect Effects 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000012452 mother liquor Substances 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007796 conventional method Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 37
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 15
- 239000003973 paint Substances 0.000 description 12
- 230000005291 magnetic effect Effects 0.000 description 8
- 238000000635 electron micrograph Methods 0.000 description 7
- 239000011790 ferrous sulphate Substances 0.000 description 7
- 235000003891 ferrous sulphate Nutrition 0.000 description 7
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 7
- 238000004220 aggregation Methods 0.000 description 6
- 230000002776 aggregation Effects 0.000 description 6
- 239000000049 pigment Substances 0.000 description 6
- 239000012266 salt solution Substances 0.000 description 6
- 239000012798 spherical particle Substances 0.000 description 6
- 239000007858 starting material Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000001058 brown pigment Substances 0.000 description 3
- 238000001493 electron microscopy Methods 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 2
- 150000008041 alkali metal carbonates Chemical class 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004438 BET method Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007771 core particle Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 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
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60071762A JPS61232224A (ja) | 1985-04-03 | 1985-04-03 | 球型を呈したマグヘマイト粒子粉末及びその製造法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60071762A JPS61232224A (ja) | 1985-04-03 | 1985-04-03 | 球型を呈したマグヘマイト粒子粉末及びその製造法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61232224A JPS61232224A (ja) | 1986-10-16 |
| JPH0580413B2 true JPH0580413B2 (de) | 1993-11-09 |
Family
ID=13469874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60071762A Granted JPS61232224A (ja) | 1985-04-03 | 1985-04-03 | 球型を呈したマグヘマイト粒子粉末及びその製造法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61232224A (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518662A (en) * | 1978-07-28 | 1980-02-08 | Kogyo Gijutsuin | Indication for vehicle stop station |
| JPS56169132A (en) * | 1980-05-31 | 1981-12-25 | Toda Kogyo Corp | Manufacture of needlelike magnetic iron oxide particle |
| JPS5932882A (ja) * | 1982-08-17 | 1984-02-22 | Hitachi Kiden Kogyo Ltd | 接触センサ− |
-
1985
- 1985-04-03 JP JP60071762A patent/JPS61232224A/ja active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518662A (en) * | 1978-07-28 | 1980-02-08 | Kogyo Gijutsuin | Indication for vehicle stop station |
| JPS56169132A (en) * | 1980-05-31 | 1981-12-25 | Toda Kogyo Corp | Manufacture of needlelike magnetic iron oxide particle |
| JPS5932882A (ja) * | 1982-08-17 | 1984-02-22 | Hitachi Kiden Kogyo Ltd | 接触センサ− |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61232224A (ja) | 1986-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |