KR890008033A - Manufacturing method of high purity iron oxide for soft and ferrite using steel acid washing waste liquid - Google Patents

Manufacturing method of high purity iron oxide for soft and ferrite using steel acid washing waste liquid Download PDF

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Publication number
KR890008033A
KR890008033A KR870013394A KR870013394A KR890008033A KR 890008033 A KR890008033 A KR 890008033A KR 870013394 A KR870013394 A KR 870013394A KR 870013394 A KR870013394 A KR 870013394A KR 890008033 A KR890008033 A KR 890008033A
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KR
South Korea
Prior art keywords
iron oxide
manufacturing
high purity
soft
ferrite
Prior art date
Application number
KR870013394A
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Korean (ko)
Inventor
방계룡
Original Assignee
방계룡
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 방계룡 filed Critical 방계룡
Priority to KR870013394A priority Critical patent/KR890008033A/en
Publication of KR890008033A publication Critical patent/KR890008033A/en

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Abstract

내용 없음No content

Description

철강산 세척 폐액을 이용한 소프트.페라이트용 고순도 산화철의 제조방법Manufacturing method of high purity iron oxide for soft and ferrite using steel acid washing waste liquid

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (1)

본문에 상술한 바와 같이 철강산 세척 용액을 불화 수소산 용액으로 처리하여 산화규소를 제거한 다음 기지의 방법에 의하여 산화철을 만들고 이산화철을 재차 불화수소산으로 처리하여 산화철속의 불순물을 완전히 제거하는 것을 특징으로 하는 소프트 페라이트 첨가용 고순도 산화철의 제조 방법As described above, the steel acid washing solution is treated with hydrofluoric acid solution to remove silicon oxide, and then iron oxide is prepared by a known method, and iron dioxide is treated with hydrofluoric acid to completely remove impurities in the iron oxide. Manufacturing method of high purity iron oxide for soft ferrite addition ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR870013394A 1987-11-27 1987-11-27 Manufacturing method of high purity iron oxide for soft and ferrite using steel acid washing waste liquid KR890008033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR870013394A KR890008033A (en) 1987-11-27 1987-11-27 Manufacturing method of high purity iron oxide for soft and ferrite using steel acid washing waste liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR870013394A KR890008033A (en) 1987-11-27 1987-11-27 Manufacturing method of high purity iron oxide for soft and ferrite using steel acid washing waste liquid

Publications (1)

Publication Number Publication Date
KR890008033A true KR890008033A (en) 1989-07-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR870013394A KR890008033A (en) 1987-11-27 1987-11-27 Manufacturing method of high purity iron oxide for soft and ferrite using steel acid washing waste liquid

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KR (1) KR890008033A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100416665B1 (en) * 2001-04-16 2004-01-31 한국지질자원연구원 Preparation of iron oxide catalyst with iron oxide waste from Iron Steel Company

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100416665B1 (en) * 2001-04-16 2004-01-31 한국지질자원연구원 Preparation of iron oxide catalyst with iron oxide waste from Iron Steel Company

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E902 Notification of reason for refusal
E601 Decision to refuse application