KR850005376A - 폐 회토류 형광체로부터의 고순도 회토류 산화물의 회수방법 - Google Patents

폐 회토류 형광체로부터의 고순도 회토류 산화물의 회수방법 Download PDF

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Publication number
KR850005376A
KR850005376A KR1019850000362A KR850000362A KR850005376A KR 850005376 A KR850005376 A KR 850005376A KR 1019850000362 A KR1019850000362 A KR 1019850000362A KR 850000362 A KR850000362 A KR 850000362A KR 850005376 A KR850005376 A KR 850005376A
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South Korea
Prior art keywords
rare earth
phosphors
waste
recovery
high purity
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KR1019850000362A
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English (en)
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KR910005048B1 (ko
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마사루 나이또오 (외 2)
Original Assignee
후지이 요시오
가세이오프토닉스 가부시끼 가이샤
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Publication of KR850005376A publication Critical patent/KR850005376A/ko
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Publication of KR910005048B1 publication Critical patent/KR910005048B1/ko

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids
    • C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C01F17/20—Compounds containing only rare earth metals as the metal element
    • C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
    • C01F17/218—Yttrium oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/01—Recovery of luminescent materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
    • C09K11/7784—Chalcogenides
    • C09K11/7787—Oxides
    • C09K11/7789—Oxysulfides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Abstract

내용 없음

Description

폐 회토류 형광체로부터의 고순도 회토류 산화물의 회수방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명 방법의 공정도.

Claims (3)

  1. 불순물로서 적어도 Fe 및/또는 Ca를 함유하는 폐 회토류 형광체로부터 고순도의 회토류산화물을 회수하는 방법에 있어서, 폐 회토류 형광체를 과잉의 폐회토류 형광체 가용성의 강산에 용해하고 다시 70℃이상에서 이론량의 0.3 내지 1.8배의 수산을 첨가하여 회토류의 수산염의 침전을 얻은후, 50℃이상의 온수로 세척을 하고 또다시 배소(焙燒)하는 것을 특징으로 하는 폐 회토류 형광체로부터의 회토류 산화물의 회수방법.
  2. 제1항에 있어서, 강산이 염산과 과산화수소와의 조합으로 이루어진 제1항의 회수방법.
  3. 제1항에 있어서, 강산이 질산인 것을 특징으로 하는 제1항의 회수방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019850000362A 1984-01-31 1985-01-22 폐 희토류 형광체로부터의 고순도 희토류 산화물의 회수방법 KR910005048B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59-14441 1984-01-31
JP59014441A JPS60161330A (ja) 1984-01-31 1984-01-31 廃希土類蛍光体からの高純度希土類酸化物の回収方法

Publications (2)

Publication Number Publication Date
KR850005376A true KR850005376A (ko) 1985-08-24
KR910005048B1 KR910005048B1 (ko) 1991-07-22

Family

ID=11861112

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850000362A KR910005048B1 (ko) 1984-01-31 1985-01-22 폐 희토류 형광체로부터의 고순도 희토류 산화물의 회수방법

Country Status (4)

Country Link
US (1) US4650652A (ko)
JP (1) JPS60161330A (ko)
KR (1) KR910005048B1 (ko)
DE (1) DE3502907C2 (ko)

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JPH0772312B2 (ja) * 1991-05-17 1995-08-02 住友金属鉱山株式会社 希土類元素の回収方法
US5435959A (en) * 1993-12-17 1995-07-25 Nike, Inc. Method of making a mold and parts from the mold
WO1996000698A1 (en) * 1994-06-28 1996-01-11 Pure Etch Co. Rare earth recovery process
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CN100443412C (zh) * 2006-01-18 2008-12-17 朴钟殷 酸法焙烧稀土精矿工艺尾气和废水治理方法
JP4846771B2 (ja) * 2008-08-12 2011-12-28 Ｊｆｅミネラル株式会社 廃蛍光灯からの希土類元素回収の前処理方法およびその前処理方法によって得られる固形物を用いた希土類元素回収方法
US8137645B2 (en) * 2010-02-23 2012-03-20 General Electric Company Rare earth recovery from fluorescent material and associated method
CN101824537B (zh) * 2010-04-07 2012-03-21 赣州虔东稀土集团股份有限公司 超高纯氧化钆及其电化还原全封闭式萃取生产工艺
EP2444507B1 (en) * 2010-10-20 2015-03-04 Montanuniversität Leoben Recovery of rare earth metals from waste material by leaching in non-oxidizing acid and by precipitating using sulphates
DE102011076038A1 (de) * 2011-05-18 2012-11-22 Osram Ag Verfahren zur Rückgewinnung von Phosphorsäure aus Leuchtstofflampen
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AU2013362874B2 (en) 2012-12-17 2018-11-15 Element 21 Pty Ltd Method for producing a solid scandium-containing material of enhanced scandium content
CN103408091B (zh) * 2013-07-19 2015-02-04 广州有色金属研究院 一种草酸稀土沉淀废水的回收方法
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CN105624403B (zh) * 2014-11-24 2018-08-24 赣州力赛科新技术有限公司 一种废酸的综合利用方法
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Also Published As

Publication number Publication date
DE3502907C2 (de) 1996-08-14
DE3502907A1 (de) 1985-08-08
US4650652A (en) 1987-03-17
JPS60161330A (ja) 1985-08-23
KR910005048B1 (ko) 1991-07-22
JPH0429607B2 (ko) 1992-05-19

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