NO850670L - Fremgangsmaate til gjenvinning av zirkonium ved opploesningsmiddelekstrasjon - Google Patents

Fremgangsmaate til gjenvinning av zirkonium ved opploesningsmiddelekstrasjon

Info

Publication number: NO850670L
Authority: NO; Norway
Prior art keywords: solution; zircon; ammonium carbonate; aqueous; aqueous ammonium
Prior art date: 1984-02-22

Application number

NO850670A

Other languages

English (en)

Norwegian (no)

Inventor

Margaret Kent Witte

Carla Corinne Frey

Original Assignee

Canada Iron Ore Co

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.)

1984-02-22

Filing date

1985-02-20

Publication date

1985-08-23

1985-02-20 Application filed by Canada Iron Ore Co filed Critical Canada Iron Ore Co

1985-08-23 Publication of NO850670L publication Critical patent/NO850670L/no

Links

238000000034 method Methods 0.000 title claims description 26
238000000638 solvent extraction Methods 0.000 title claims description 7
QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 title description 10
229910052726 zirconium Inorganic materials 0.000 title description 10
GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 56
229910052845 zircon Inorganic materials 0.000 claims description 50
239000002253 acid Substances 0.000 claims description 30
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 29
239000010936 titanium Substances 0.000 claims description 29
229910052719 titanium Inorganic materials 0.000 claims description 29
ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 27
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 27
239000001099 ammonium carbonate Substances 0.000 claims description 27
235000012501 ammonium carbonate Nutrition 0.000 claims description 27
238000000605 extraction Methods 0.000 claims description 20
239000011260 aqueous acid Substances 0.000 claims description 19
239000002244 precipitate Substances 0.000 claims description 13
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
239000000356 contaminant Substances 0.000 claims description 7
229910052751 metal Inorganic materials 0.000 claims description 7
239000002184 metal Substances 0.000 claims description 7
229910021529 ammonia Inorganic materials 0.000 claims description 6
239000003960 organic solvent Substances 0.000 claims description 5
VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
239000000908 ammonium hydroxide Substances 0.000 claims description 4
239000007788 liquid Substances 0.000 claims description 3
KIFBCLXXCGNRRU-UHFFFAOYSA-N bis(5,5-dimethylhexyl)phosphinic acid Chemical compound CC(C)(C)CCCCP(O)(=O)CCCCC(C)(C)C KIFBCLXXCGNRRU-UHFFFAOYSA-N 0.000 claims description 2
125000004432 carbon atom Chemical group C* 0.000 claims description 2
239000003350 kerosene Substances 0.000 claims description 2
150000007522 mineralic acids Chemical class 0.000 claims description 2
239000000243 solution Substances 0.000 description 78
229910052735 hafnium Inorganic materials 0.000 description 24
VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 24
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 11
229910017604 nitric acid Inorganic materials 0.000 description 11
239000003795 chemical substances by application Substances 0.000 description 9
239000012535 impurity Substances 0.000 description 9
229920006395 saturated elastomer Polymers 0.000 description 9
150000007513 acids Chemical class 0.000 description 8
239000007864 aqueous solution Substances 0.000 description 7
229910000449 hafnium oxide Inorganic materials 0.000 description 7
229910001928 zirconium oxide Inorganic materials 0.000 description 7
229910052742 iron Inorganic materials 0.000 description 6
238000001556 precipitation Methods 0.000 description 5
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
229910052770 Uranium Inorganic materials 0.000 description 4
229910052782 aluminium Inorganic materials 0.000 description 4
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
238000001354 calcination Methods 0.000 description 4
239000012141 concentrate Substances 0.000 description 4
238000010438 heat treatment Methods 0.000 description 4
230000003301 hydrolyzing effect Effects 0.000 description 4
239000002904 solvent Substances 0.000 description 4
DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 4
QUXFOKCUIZCKGS-UHFFFAOYSA-N bis(2,4,4-trimethylpentyl)phosphinic acid Chemical compound CC(C)(C)CC(C)CP(O)(=O)CC(C)CC(C)(C)C QUXFOKCUIZCKGS-UHFFFAOYSA-N 0.000 description 3
230000007062 hydrolysis Effects 0.000 description 3
238000006460 hydrolysis reaction Methods 0.000 description 3
239000003208 petroleum Substances 0.000 description 3
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
229910019142 PO4 Inorganic materials 0.000 description 2
-1 alkyl phosphate Chemical compound 0.000 description 2
239000004411 aluminium Substances 0.000 description 2
239000001569 carbon dioxide Substances 0.000 description 2
229910002092 carbon dioxide Inorganic materials 0.000 description 2
150000001875 compounds Chemical class 0.000 description 2
239000000284 extract Substances 0.000 description 2
DFIPXJGORSQQQD-UHFFFAOYSA-N hafnium;tetrahydrate Chemical compound O.O.O.O.[Hf] DFIPXJGORSQQQD-UHFFFAOYSA-N 0.000 description 2
150000004679 hydroxides Chemical class 0.000 description 2
150000002739 metals Chemical class 0.000 description 2
239000000203 mixture Chemical class 0.000 description 2
239000010452 phosphate Substances 0.000 description 2
230000001376 precipitating effect Effects 0.000 description 2
238000000746 purification Methods 0.000 description 2
238000011084 recovery Methods 0.000 description 2
238000000926 separation method Methods 0.000 description 2
150000004760 silicates Chemical class 0.000 description 2
239000000126 substance Substances 0.000 description 2
STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 2
229910052727 yttrium Inorganic materials 0.000 description 2
VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
IVORCBKUUYGUOL-UHFFFAOYSA-N 1-ethynyl-2,4-dimethoxybenzene Chemical compound COC1=CC=C(C#C)C(OC)=C1 IVORCBKUUYGUOL-UHFFFAOYSA-N 0.000 description 1
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
238000005273 aeration Methods 0.000 description 1
125000001931 aliphatic group Chemical group 0.000 description 1
239000003513 alkali Substances 0.000 description 1
229910052910 alkali metal silicate Inorganic materials 0.000 description 1
PRKQVKDSMLBJBJ-UHFFFAOYSA-N ammonium carbonate Chemical class N.N.OC(O)=O PRKQVKDSMLBJBJ-UHFFFAOYSA-N 0.000 description 1
150000003863 ammonium salts Chemical class 0.000 description 1
239000002152 aqueous-organic solution Substances 0.000 description 1
229910052790 beryllium Inorganic materials 0.000 description 1
ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
229910052791 calcium Inorganic materials 0.000 description 1
239000011575 calcium Substances 0.000 description 1
239000003518 caustics Substances 0.000 description 1
229910010293 ceramic material Inorganic materials 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
239000003153 chemical reaction reagent Substances 0.000 description 1
238000011109 contamination Methods 0.000 description 1
YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 1
238000004090 dissolution Methods 0.000 description 1
239000003344 environmental pollutant Substances 0.000 description 1
150000002363 hafnium compounds Chemical class 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
229910052758 niobium Inorganic materials 0.000 description 1
239000010955 niobium Substances 0.000 description 1
GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
229910052757 nitrogen Inorganic materials 0.000 description 1
150000007524 organic acids Chemical class 0.000 description 1
235000005985 organic acids Nutrition 0.000 description 1
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
DLYUQMMRRRQYAE-UHFFFAOYSA-N phosphorus pentoxide Inorganic materials O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
231100000719 pollutant Toxicity 0.000 description 1
239000000047 product Substances 0.000 description 1
230000001737 promoting effect Effects 0.000 description 1
229910052761 rare earth metal Inorganic materials 0.000 description 1
150000002910 rare earth metals Chemical class 0.000 description 1
239000011819 refractory material Substances 0.000 description 1
230000001105 regulatory effect Effects 0.000 description 1
150000003839 salts Chemical class 0.000 description 1
229910052814 silicon oxide Inorganic materials 0.000 description 1
239000007787 solid Substances 0.000 description 1
229910052718 tin Inorganic materials 0.000 description 1
229910052725 zinc Inorganic materials 0.000 description 1
239000011701 zinc Substances 0.000 description 1

Classifications

- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
- C01G25/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
- C01G25/02—Oxides
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G27/00—Compounds of hafnium
- C01G27/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G27/00—Compounds of hafnium
- C01G27/02—Oxides
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/38—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
- C22B3/384—Pentavalent phosphorus oxyacids, esters thereof
- C22B3/3842—Phosphinic acid, e.g. H2P(O)(OH)
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Engineering & Computer Science (AREA)
Environmental & Geological Engineering (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Geology (AREA)
Life Sciences & Earth Sciences (AREA)
Manufacturing & Machinery (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Manufacture And Refinement Of Metals (AREA)
Inorganic Compounds Of Heavy Metals (AREA)
Extraction Or Liquid Replacement (AREA)

NO850670A 1984-02-22 1985-02-20 Fremgangsmaate til gjenvinning av zirkonium ved opploesningsmiddelekstrasjon NO850670L (no)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US58227284A	1984-02-22	1984-02-22

Publications (1)

Publication Number	Publication Date
NO850670L true NO850670L (no)	1985-08-23

Family

ID=24328488

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO850670A NO850670L (no)	1984-02-22	1985-02-20	Fremgangsmaate til gjenvinning av zirkonium ved opploesningsmiddelekstrasjon

Country Status (5)

Country	Link
EP (1)	EP0154448A3 (fr)
JP (1)	JPS60255621A (fr)
AU (1)	AU3898785A (fr)
NO (1)	NO850670L (fr)
ZA (1)	ZA851295B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0254731A (ja) *	1988-08-19	1990-02-23	Nishimura Watanabe Chiyuushiyutsu Kenkyusho:Kk	チタンの分離法
EP0662158A1 (fr) *	1991-08-19	1995-07-12	Commonwealth Scientific And Industrial Research Organisation	Extraction de zirconium
RU2190677C2 (ru) *	2000-06-15	2002-10-10	Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт неорганических материалов им. акад. А.А.Бочвара	Способ экстракционного разделения и концентрирования циркония и гафния
RU2183225C1 (ru) *	2001-02-05	2002-06-10	Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра РАН	Способ переработки эвдиалитового концентрата
BR0215956B1 (pt)	2002-11-28	2011-01-11		dispositivo e método de misturação e sedimentação em processos de extração com solvente para a recuperação de produtos de pureza elevada.
KR20070070263A (ko)	2003-07-25	2007-07-03	닛코킨조쿠 가부시키가이샤	고순도 하프늄 재료, 이 재료로 이루어진 타겟트 및 박막과고순도 하프늄의 제조방법
CN101218360B (zh)	2005-07-07	2010-06-16	日矿金属株式会社	高纯度铪及其制造方法、由高纯度铪构成的靶及薄膜
RU2350671C1 (ru) *	2007-08-06	2009-03-27	Институт технической химии Уральского отделения Российской академии наук (ИТХ УрО РАН)	Экстракционная система для выделения ионов циркония из водных растворов
RU2557594C2 (ru) *	2013-11-15	2015-07-27	Открытое акционерное общество "Чепецкий механический завод"	Способ экстракционного извлечения циркония и гафния
FR3032722B1 (fr) *	2015-02-12	2019-05-31	Centre National De La Recherche Scientifique	Procede d'extraction du zirconium et du hafnium d'un melange
CN111020230A (zh) *	2019-12-10	2020-04-17	中核二七二铀业有限责任公司	一种原子能级二氧化铪制备方法
CN114317959B (zh) *	2021-12-31	2024-01-12	中核二七二铀业有限责任公司	一种锆铪分离萃余水沉淀滤渣回收锆铪的方法
CN120026189B (zh) *	2025-03-07	2025-08-29	山东金鸾科技开发有限公司	一种矿物综合利用钛锆铪的疏水氨基羧酸配位体系

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2923607A (en) *	1952-06-25	1960-02-02	Donald F Peppard	Process of separating zirconium values from hafnium values by solvent extraction with an alkyl phosphate
US3052514A (en) *	1960-06-03	1962-09-04	John M Schmitt	Process for recovering uranium from aqueous phosphoric acid liquors
US3272590A (en) *	1962-03-15	1966-09-13	Pittsburgh Plate Glass Co	Separation of hf and zr values by solvent extraction
US3243257A (en) *	1963-09-11	1966-03-29	Charles F Coleman	Recovery of uranium and zirconium from aqueous fluoride solutions
CA1090143A (fr) *	1976-01-26	1980-11-25	Hans Reinhardt	Methode pour recuperer du zinc a partir de materiaux contenant du zinc et du fer
MA19257A1 (fr) *	1980-08-28	1982-04-01	Canada Cyanamid	Nouveau procede de separation selective de cobalt de solutions aqueuses .

1985
- 1985-02-20 ZA ZA851295A patent/ZA851295B/xx unknown
- 1985-02-20 AU AU38987/85A patent/AU3898785A/en not_active Abandoned
- 1985-02-20 NO NO850670A patent/NO850670L/no unknown
- 1985-02-20 EP EP85301135A patent/EP0154448A3/fr not_active Withdrawn
- 1985-02-22 JP JP60034256A patent/JPS60255621A/ja active Pending

Also Published As

Publication number	Publication date
AU3898785A (en)	1985-08-29
ZA851295B (en)	1985-10-30
JPS60255621A (ja)	1985-12-17
EP0154448A2 (fr)	1985-09-11
EP0154448A3 (fr)	1986-12-30

Publication	Publication Date	Title
US7282187B1 (en)	2007-10-16	Recovery of metal values
US4193968A (en)	1980-03-18	Process for recovering gallium
US3104950A (en)	1963-09-24	Process for the separation of iron and titanium values by extraction and the subsequent preparation of anhydrous titanium dopxode
US4886648A (en)	1989-12-12	Process for the recovery of germanium from solutions that contain it
US4239735A (en)	1980-12-16	Removal of impurites from clay
NO850670L (no)	1985-08-23	Fremgangsmaate til gjenvinning av zirkonium ved opploesningsmiddelekstrasjon
US3067010A (en)	1962-12-04	Process for preparation of titanium dioxide
US5078786A (en)	1992-01-07	Process for recovering metal values from jarosite solids
US4269809A (en)	1981-05-26	Recovery in titanium metal values by solvent extraction
US3751553A (en)	1973-08-07	Process for separating yttrium values from the lanthanides
US4207294A (en)	1980-06-10	Process for recovering uranium from wet-process phosphoric acid
US2962372A (en)	1960-11-29	Columbium and tantalum separation
CA1303815C (fr)	1992-06-23	Methode de neutralisation de l'acide sulfurique contenant des ions de fer
US3145081A (en)	1964-08-18	Process for concentration and purification of beryllium values
CA1073566A (fr)	1980-03-11	Procede de traitement d'un liquide residuel acide
EP0398149B1 (fr)	1993-07-21	Récupération de chlorure de césium à partir de minerai de pollucite
JPS63147824A (ja)	1988-06-20	スクラツプからのガリウムの回収方法
CN113355538A (zh)	2021-09-07	一种盐酸和有机萃取剂结合处理离子矿的氧化铽萃取工艺
US4041138A (en)	1977-08-09	Process for the preparation of crystalline potassium tantalum fluoride
US4108963A (en)	1978-08-22	Process for purifying phosphoric acid
US4302428A (en)	1981-11-24	Yellowcake processing in uranium recovery
US3449074A (en)	1969-06-10	Process for removing titanium and vanadium from phosphoric acid
US2958573A (en)	1960-11-01	Purification of uranium concentrates by liquid extraction
US5419880A (en)	1995-05-30	Controlled acid-strong acid strip process
RU2211871C1 (ru)	2003-09-10	Способ переработки лопаритового концентрата