JPS56164018A - Preparation of high grade iron oxide for ferritic magnetic material - Google Patents

Preparation of high grade iron oxide for ferritic magnetic material

Info

Publication number
JPS56164018A
JPS56164018A JP6832580A JP6832580A JPS56164018A JP S56164018 A JPS56164018 A JP S56164018A JP 6832580 A JP6832580 A JP 6832580A JP 6832580 A JP6832580 A JP 6832580A JP S56164018 A JPS56164018 A JP S56164018A
Authority
JP
Japan
Prior art keywords
iron oxide
zinc
precipitate
resultant
magnetic material
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.)
Granted
Application number
JP6832580A
Other languages
Japanese (ja)
Other versions
JPS603011B2 (en
Inventor
Tomizo Yamada
Takashi Hino
Yoichi Takazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dowa Holdings Co Ltd
Akita Seiren KK
Original Assignee
Akita Seiren KK
Dowa Mining 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.)
Filing date
Publication date
Application filed by Akita Seiren KK, Dowa Mining Co Ltd filed Critical Akita Seiren KK
Priority to JP55068325A priority Critical patent/JPS603011B2/en
Publication of JPS56164018A publication Critical patent/JPS56164018A/en
Publication of JPS603011B2 publication Critical patent/JPS603011B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To recover iron in a zinc residue as iron oxide for a ferritic magnetic material, by adding a preliminary neutralizing step of specific conditions to the hematite method, and purifying the resultant iron oxide through leaching under pressure and roasting.
CONSTITUTION: An acid leachate from a residue of zinc leaching obtained in the wet zinc refining is neutralized with a neutralizing agent, e.g. Ca(OH)2, to a pH of 4W5. Thus, impurities, e.g. Ga, In, Al or Si, are removed by precipitating with gypsum with a high efficiency. The SiO2 removal ratio can be increased with increase in pH; however, the pH value described above is kept to maximize the ratio of the remaining Zn. The resultant solution after removing the precipitate is subjected to the arsenic removal in the presence of H2S or copper by adding zinc dust, etc. thereto. The solution after separating the precipitate of the arsenic compound is then oxidized at the total pressure of 16W20kg/cm2.G and a temperature of 180W200°C to precipitate the iron oxide. The resultant iron oxide is washed under pressure with hot water at 170W200°C to elute impurities, e.g. Zn, Na, or K. The iron oxide is then oxidized by roasting at 700W1,000°C, desulfurized and pulverized to give the aimed product.
COPYRIGHT: (C)1981,JPO&Japio
JP55068325A 1980-05-22 1980-05-22 Production method of high-grade iron oxide for ferrite magnetic materials Expired JPS603011B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55068325A JPS603011B2 (en) 1980-05-22 1980-05-22 Production method of high-grade iron oxide for ferrite magnetic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55068325A JPS603011B2 (en) 1980-05-22 1980-05-22 Production method of high-grade iron oxide for ferrite magnetic materials

Publications (2)

Publication Number Publication Date
JPS56164018A true JPS56164018A (en) 1981-12-16
JPS603011B2 JPS603011B2 (en) 1985-01-25

Family

ID=13370552

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55068325A Expired JPS603011B2 (en) 1980-05-22 1980-05-22 Production method of high-grade iron oxide for ferrite magnetic materials

Country Status (1)

Country Link
JP (1) JPS603011B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61191525A (en) * 1984-12-11 1986-08-26 ゴ−ルド、フイ−ルズ、マイニング　エンド、デイベロプメント、リミテツド Sedimentation of iron in ferrous sulfate solution

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6064525B2 (en) * 2012-11-01 2017-01-25 Tdk株式会社 Ferrite composition, ferrite core and electronic component
JP6064526B2 (en) * 2012-11-01 2017-01-25 Tdk株式会社 Ferrite composition, ferrite core and electronic component
JP6380730B2 (en) * 2014-03-13 2018-08-29 Tdk株式会社 Ferrite composition, ferrite core and electronic component
JP6380729B2 (en) * 2014-03-13 2018-08-29 Tdk株式会社 Ferrite composition, ferrite core and electronic component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61191525A (en) * 1984-12-11 1986-08-26 ゴ−ルド、フイ−ルズ、マイニング　エンド、デイベロプメント、リミテツド Sedimentation of iron in ferrous sulfate solution

Also Published As

Publication number Publication date
JPS603011B2 (en) 1985-01-25

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