KR970033090A - Separation and Regeneration of Rare Earth from Rare Earth Wastewater Treatment Residue - Google Patents

Separation and Regeneration of Rare Earth from Rare Earth Wastewater Treatment Residue Download PDF

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Publication number
KR970033090A
KR970033090A KR1019950060499A KR19950060499A KR970033090A KR 970033090 A KR970033090 A KR 970033090A KR 1019950060499 A KR1019950060499 A KR 1019950060499A KR 19950060499 A KR19950060499 A KR 19950060499A KR 970033090 A KR970033090 A KR 970033090A
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KR
South Korea
Prior art keywords
rare earth
wastewater treatment
separation
regeneration
treatment residue
Prior art date
Application number
KR1019950060499A
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Korean (ko)
Other versions
KR100228222B1 (en
Inventor
최주
이성계
Original Assignee
김종진
포항종합제철주식회사
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Publication date
Application filed by 김종진, 포항종합제철주식회사 filed Critical 김종진
Priority to KR1019950060499A priority Critical patent/KR100228222B1/en
Publication of KR970033090A publication Critical patent/KR970033090A/en
Priority to CN 97117672 priority patent/CN1088887C/en
Application granted granted Critical
Publication of KR100228222B1 publication Critical patent/KR100228222B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation

Abstract

본 발명은 희토불화물을 주요성분으로 하고 철산화물이 혼합된 폐수처리 잔사를 탄산나트륨을 혼합하여 가열용융시킨 후, 물에 풀어 여과하고, pH를 2로 조절하고 자석을 사용하여 여과잔사로부터 자성물질을 분리제거하는 것으로 구성되는 폐수잔사로부터 희토류의 분리 및 재생방법에 관한 것이다.In the present invention, a wastewater treatment residue containing rare earth fluoride and ferrous oxide mixed with sodium carbonate is heated and melted, and then dissolved in water and filtered. The present invention relates to a method for separating and regenerating rare earths from wastewater residues comprising separation and removal.

Description

희토류가 함유된 폐수처리잔사로부터 희토류의 분리 재생방법Separation and Regeneration of Rare Earth from Rare Earth Wastewater Treatment Residue

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

Claims (5)

희토불화물을 주요성분으로 하고 철산화물이 혼합된 폐수처리 잔사를 탄산나트륨을 혼합하여 가열용융시킨 후, 물에 풀어 여과하고 , pH를 2로 조절하고 자석을 사용하여 여과잔사로부터 자성물질을 분리제거하는 것으로 구성되는 폐수처리잔사로부터 희토류의 분리 재생방법.Wastewater treatment residue containing rare earth fluoride and ferric oxide mixed with sodium carbonate is heated and melted, and then dissolved in water and filtered. Separation and regeneration of rare earths from wastewater treatment residues comprising: 제1항에 있어서, 상기 가열온도는 1000~1300℃ 이고, 가열시간은 16-25분인 것을 특징으로 하는 폐수처리잔사로부터 희토류의 분리 재생방법.The method of claim 1, wherein the heating temperature is 1000 to 1300 ° C and the heating time is 16-25 minutes. 제1항에 있어서, 상기 탄산나트륨의 첨가량은 폐수잔사에 함유된 불소량으로 환산하여 그 당량비(Na/F)로 1.2배 이상인 것을 특징으로 하는 폐수처리잔사로부터 희토류의 분리 재생방법.The method of claim 1, wherein the amount of sodium carbonate added is 1.2 times or more in terms of its equivalent ratio (Na / F) in terms of the amount of fluorine contained in the waste water residue. 제1항에 있어서, 상기 여과액에 남아있는 불소는 가열하여 NaF형으로 재결정하거나 고농도로 농축시켜 Ca화합물로 침전시켜 형석(CaF2)으로 회수하는 것을 특징으로 하는 폐수처리잔사로부터 희토류의 분리 재생방법.The method of claim 1, wherein the fluorine remaining in the filtrate is heated to recrystallized in NaF form or concentrated to a high concentration to precipitate as a Ca compound to recover as fluorite (CaF 2 ) is separated and regenerated of the rare earth from the waste water treatment residue Way. 제1항의 방법에 의해 분리 및, 재생된 희토류를 산에 용해시킨 것을 특징으로 하는 폐수의 불소제거제.The fluorine remover for wastewater, characterized in that the rare earth separated and regenerated by the method of claim 1 is dissolved in an acid. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950060499A 1995-12-28 1995-12-28 Separation regeneration method of rare earth compounds from wastewater treatment residue containing rare earth compounds KR100228222B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019950060499A KR100228222B1 (en) 1995-12-28 1995-12-28 Separation regeneration method of rare earth compounds from wastewater treatment residue containing rare earth compounds
CN 97117672 CN1088887C (en) 1995-12-28 1997-08-26 Portable audio logical-plate mechanism and used clamping-wheel driving device and ejecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950060499A KR100228222B1 (en) 1995-12-28 1995-12-28 Separation regeneration method of rare earth compounds from wastewater treatment residue containing rare earth compounds

Publications (2)

Publication Number Publication Date
KR970033090A true KR970033090A (en) 1997-07-22
KR100228222B1 KR100228222B1 (en) 1999-11-01

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Application Number Title Priority Date Filing Date
KR1019950060499A KR100228222B1 (en) 1995-12-28 1995-12-28 Separation regeneration method of rare earth compounds from wastewater treatment residue containing rare earth compounds

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KR (1) KR100228222B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11447397B1 (en) 2021-03-19 2022-09-20 Lynas Rare Earths Limited Materials, methods and techniques for generating rare earth carbonates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11447397B1 (en) 2021-03-19 2022-09-20 Lynas Rare Earths Limited Materials, methods and techniques for generating rare earth carbonates
WO2022195349A1 (en) * 2021-03-19 2022-09-22 Lynas Rare Earths Limited Materials, methods and techniques for generating rare earth carbonates

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Publication number Publication date
KR100228222B1 (en) 1999-11-01

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