JPH0415172B2 - - Google Patents

Info

Publication number

JPH0415172B2

JPH0415172B2 JP59135599A JP13559984A JPH0415172B2 JP H0415172 B2 JPH0415172 B2 JP H0415172B2 JP 59135599 A JP59135599 A JP 59135599A JP 13559984 A JP13559984 A JP 13559984A JP H0415172 B2 JPH0415172 B2 JP H0415172B2

Authority

JP

Japan

Prior art keywords

particles

magnetic

aqueous solution

hematite

particle

Prior art date

1984-06-29

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 - Lifetime

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• 239000002245 particle Substances 0.000 claims description 229
• 229910052595 hematite Inorganic materials 0.000 claims description 58
• 239000011019 hematite Substances 0.000 claims description 58
• LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 58
• 239000007864 aqueous solution Substances 0.000 claims description 43
• KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 39
• 238000000034 method Methods 0.000 claims description 28
• 239000000843 powder Substances 0.000 claims description 20
• 239000003513 alkali Substances 0.000 claims description 19
• BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 18
• 150000003839 salts Chemical class 0.000 claims description 16
• 238000004519 manufacturing process Methods 0.000 claims description 15
• BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 14
• 239000007789 gas Substances 0.000 claims description 12
• 159000000003 magnesium salts Chemical class 0.000 claims description 11
• QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
• 239000001301 oxygen Substances 0.000 claims description 10
• 229910052760 oxygen Inorganic materials 0.000 claims description 10
• 238000007254 oxidation reaction Methods 0.000 claims description 7
• 239000000203 mixture Substances 0.000 claims description 6
• 230000003647 oxidation Effects 0.000 claims description 5
• 230000001590 oxidative effect Effects 0.000 claims description 5
• 239000000243 solution Substances 0.000 claims description 5
• 230000005587 bubbling Effects 0.000 claims description 3
• 239000011777 magnesium Substances 0.000 claims description 2
• UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 52
• 239000011148 porous material Substances 0.000 description 25
• 239000011248 coating agent Substances 0.000 description 16
• 238000000576 coating method Methods 0.000 description 16
• XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
• 239000010408 film Substances 0.000 description 14
• SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 13
• 229910052598 goethite Inorganic materials 0.000 description 12
• AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 12
• 230000000052 comparative effect Effects 0.000 description 8
• 230000018044 dehydration Effects 0.000 description 8
• 238000006297 dehydration reaction Methods 0.000 description 8
• 238000000635 electron micrograph Methods 0.000 description 7
• JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 7
• 239000006249 magnetic particle Substances 0.000 description 7
• 230000005415 magnetization Effects 0.000 description 7
• 239000007858 starting material Substances 0.000 description 7
• CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 6
• 238000006243 chemical reaction Methods 0.000 description 6
• 238000007796 conventional method Methods 0.000 description 6
• 239000012266 salt solution Substances 0.000 description 6
• 238000002441 X-ray diffraction Methods 0.000 description 5
• 229910001566 austenite Inorganic materials 0.000 description 5
• 239000006185 dispersion Substances 0.000 description 5
• 230000001747 exhibiting effect Effects 0.000 description 5
• 238000011049 filling Methods 0.000 description 5
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
• 238000010586 diagram Methods 0.000 description 4
• 239000000696 magnetic material Substances 0.000 description 4
• 239000006247 magnetic powder Substances 0.000 description 4
• 239000001509 sodium citrate Substances 0.000 description 4
• NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 4
• 238000005516 engineering process Methods 0.000 description 3
• 230000004907 flux Effects 0.000 description 3
• 238000010438 heat treatment Methods 0.000 description 3
• 229910052943 magnesium sulfate Inorganic materials 0.000 description 3
• 235000019341 magnesium sulphate Nutrition 0.000 description 3
• 239000003973 paint Substances 0.000 description 3
• 230000002195 synergetic effect Effects 0.000 description 3
• BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
• VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
• UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
• TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
• CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
• 150000001875 compounds Chemical class 0.000 description 2
• 239000013078 crystal Substances 0.000 description 2
• 239000011790 ferrous sulphate Substances 0.000 description 2
• 235000003891 ferrous sulphate Nutrition 0.000 description 2
• 239000001257 hydrogen Substances 0.000 description 2
• 229910052739 hydrogen Inorganic materials 0.000 description 2
• 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
• 229910021519 iron(III) oxide-hydroxide Inorganic materials 0.000 description 2
• 239000010410 layer Substances 0.000 description 2
• BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
• 230000008569 process Effects 0.000 description 2
• 230000009467 reduction Effects 0.000 description 2
• 238000005245 sintering Methods 0.000 description 2
• 239000002002 slurry Substances 0.000 description 2
• ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
• OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
• 241001070941 Castanea Species 0.000 description 1
• 235000014036 Castanea Nutrition 0.000 description 1
• CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
• 229910002588 FeOOH Inorganic materials 0.000 description 1
• CUPCBVUMRUSXIU-UHFFFAOYSA-N [Fe].OOO Chemical compound [Fe].OOO CUPCBVUMRUSXIU-UHFFFAOYSA-N 0.000 description 1
• 238000010521 absorption reaction Methods 0.000 description 1
• 230000002378 acidificating effect Effects 0.000 description 1
• 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
• 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
• 239000001099 ammonium carbonate Substances 0.000 description 1
• 235000012501 ammonium carbonate Nutrition 0.000 description 1
• 238000000137 annealing Methods 0.000 description 1
• 238000000498 ball milling Methods 0.000 description 1
• 239000008280 blood Substances 0.000 description 1
• 210000004369 blood Anatomy 0.000 description 1
• 238000007664 blowing Methods 0.000 description 1
• 229910052799 carbon Inorganic materials 0.000 description 1
• 230000008859 change Effects 0.000 description 1
• 230000007423 decrease Effects 0.000 description 1
• 238000009826 distribution Methods 0.000 description 1
• 238000001035 drying Methods 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• 230000005518 electrochemistry Effects 0.000 description 1
• 229960004887 ferric hydroxide Drugs 0.000 description 1
• 229960002089 ferrous chloride Drugs 0.000 description 1
• 238000007667 floating Methods 0.000 description 1
• UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 1
• 230000006872 improvement Effects 0.000 description 1
• 230000003993 interaction Effects 0.000 description 1
• NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
• IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
• 229910000015 iron(II) carbonate Inorganic materials 0.000 description 1
• 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
• NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
• 229940071264 lithium citrate Drugs 0.000 description 1
• WJSIUCDMWSDDCE-UHFFFAOYSA-K lithium citrate (anhydrous) Chemical compound [Li+].[Li+].[Li+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O WJSIUCDMWSDDCE-UHFFFAOYSA-K 0.000 description 1
• 229910001629 magnesium chloride Inorganic materials 0.000 description 1
• 239000000463 material Substances 0.000 description 1
• 229910000027 potassium carbonate Inorganic materials 0.000 description 1
• 239000001508 potassium citrate Substances 0.000 description 1
• 229960002635 potassium citrate Drugs 0.000 description 1
• QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
• 235000011082 potassium citrates Nutrition 0.000 description 1
• 238000004663 powder metallurgy Methods 0.000 description 1
• -1 salt iron oxyhydroxide Chemical class 0.000 description 1
• 239000011734 sodium Substances 0.000 description 1
• 229910000029 sodium carbonate Inorganic materials 0.000 description 1
• 229960001790 sodium citrate Drugs 0.000 description 1
• 230000003068 static effect Effects 0.000 description 1
• 239000002344 surface layer Substances 0.000 description 1
• 239000010409 thin film Substances 0.000 description 1
• YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 1
• 238000004804 winding Methods 0.000 description 1
• 229910006540 α-FeOOH Inorganic materials 0.000 description 1