JPS582223A - 磁気記録用磁性粉末の製造方法 - Google Patents

Info

Publication number

JPS582223A

JPS582223A JP56097547A JP9754781A JPS582223A JP S582223 A JPS582223 A JP S582223A JP 56097547 A JP56097547 A JP 56097547A JP 9754781 A JP9754781 A JP 9754781A JP S582223 A JPS582223 A JP S582223A

Authority

JP

Japan

Prior art keywords

coprecipitate

ions

magnetic recording

magnetic

contg

Prior art date

1981-06-25

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.)

Granted

Links

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• 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
• 239000006247 magnetic powder Substances 0.000 title description 2
• 239000000843 powder Substances 0.000 claims abstract description 15
• 238000005406 washing Methods 0.000 claims abstract description 12
• 150000002500 ions Chemical class 0.000 claims abstract description 10
• 238000010257 thawing Methods 0.000 claims abstract description 10
• 238000001035 drying Methods 0.000 claims abstract description 8
• 238000007710 freezing Methods 0.000 claims abstract description 5
• 230000008014 freezing Effects 0.000 claims abstract description 5
• 239000002002 slurry Substances 0.000 claims abstract description 5
• 238000010438 heat treatment Methods 0.000 claims description 4
• JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 claims 1
• 239000004922 lacquer Substances 0.000 claims 1
• 229910000859 α-Fe Inorganic materials 0.000 abstract description 12
• 230000005415 magnetization Effects 0.000 abstract description 10
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
• HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 6
• 150000003839 salts Chemical class 0.000 abstract description 6
• BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 5
• 229910052788 barium Inorganic materials 0.000 abstract description 5
• 229910052712 strontium Inorganic materials 0.000 abstract description 4
• VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 3
• 229910052791 calcium Inorganic materials 0.000 abstract description 3
• CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
• BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 abstract 2
• 229910002651 NO3 Inorganic materials 0.000 abstract 1
• NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
• QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
• 238000001914 filtration Methods 0.000 abstract 1
• 229910000027 potassium carbonate Inorganic materials 0.000 abstract 1
• 235000015320 potassium carbonate Nutrition 0.000 abstract 1
• 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
• 235000017550 sodium carbonate Nutrition 0.000 abstract 1
• 239000002245 particle Substances 0.000 description 12
• 239000007864 aqueous solution Substances 0.000 description 10
• 238000005054 agglomeration Methods 0.000 description 7
• 230000002776 aggregation Effects 0.000 description 7
• 238000004140 cleaning Methods 0.000 description 5
• 229910001369 Brass Inorganic materials 0.000 description 4
• 239000010951 brass Substances 0.000 description 4
• 229910052751 metal Inorganic materials 0.000 description 4
• 239000002184 metal Substances 0.000 description 4
• 239000003513 alkali Substances 0.000 description 3
• 238000007796 conventional method Methods 0.000 description 3
• 238000000034 method Methods 0.000 description 3
• IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
• VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
• 239000011230 binding agent Substances 0.000 description 2
• 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
• 150000001805 chlorine compounds Chemical class 0.000 description 2
• 239000013078 crystal Substances 0.000 description 2
• 238000010586 diagram Methods 0.000 description 2
• 239000000203 mixture Substances 0.000 description 2
• 239000012266 salt solution Substances 0.000 description 2
• 239000007787 solid Substances 0.000 description 2
• 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
• 241001155961 Baris Species 0.000 description 1
• 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
• 150000001342 alkaline earth metals Chemical class 0.000 description 1
• 239000012670 alkaline solution Substances 0.000 description 1
• 229910052799 carbon Inorganic materials 0.000 description 1
• 239000002270 dispersing agent Substances 0.000 description 1
• 238000009826 distribution Methods 0.000 description 1
• 230000004907 flux Effects 0.000 description 1
• 239000011521 glass Substances 0.000 description 1
• 239000000463 material Substances 0.000 description 1
• 229910021645 metal ion Inorganic materials 0.000 description 1
• 229910052758 niobium Inorganic materials 0.000 description 1
• 229910052757 nitrogen Inorganic materials 0.000 description 1
• 238000004904 shortening Methods 0.000 description 1
• 239000000377 silicon dioxide Substances 0.000 description 1
• 239000000243 solution Substances 0.000 description 1
• 239000002904 solvent Substances 0.000 description 1
• 238000003756 stirring Methods 0.000 description 1
• 239000000758 substrate Substances 0.000 description 1
• XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
• 229910052815 sulfur oxide Inorganic materials 0.000 description 1
• 229910052719 titanium Inorganic materials 0.000 description 1
• 229910052720 vanadium Inorganic materials 0.000 description 1
• 229910052725 zinc Inorganic materials 0.000 description 1

Cited By (1)