DD143595A5 - Verfahren zur gewinnung von reinem aluminiumoxid - Google Patents

Verfahren zur gewinnung von reinem aluminiumoxid Download PDF

Info

Publication number: DD143595A5
Authority: DD; German Democratic Republic
Prior art keywords: liquid; digestion; alumina; ore; hydrochloric acid
Prior art date: 1978-05-18

Application number

DD79212965A

Other languages

German (de)

English (en)

Inventor

Joseph Cohen

Alain Adjemian

Original Assignee

Pechiney Aluminium

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.)

1978-05-18

Filing date

1979-05-17

Publication date

1980-09-03

1979-05-17 Application filed by Pechiney Aluminium filed Critical Pechiney Aluminium

1980-09-03 Publication of DD143595A5 publication Critical patent/DD143595A5/de

Links

238000000034 method Methods 0.000 title claims description 27
TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title description 11
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 128
239000007788 liquid Substances 0.000 claims description 88
239000012535 impurity Substances 0.000 claims description 59
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 48
230000029087 digestion Effects 0.000 claims description 42
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 34
238000000926 separation method Methods 0.000 claims description 28
239000012452 mother liquor Substances 0.000 claims description 25
239000000203 mixture Substances 0.000 claims description 19
238000001556 precipitation Methods 0.000 claims description 16
229910052782 aluminium Inorganic materials 0.000 claims description 15
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 10
238000005406 washing Methods 0.000 claims description 9
ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 8
239000011591 potassium Substances 0.000 claims description 8
229910052700 potassium Inorganic materials 0.000 claims description 8
238000010438 heat treatment Methods 0.000 claims description 4
238000001354 calcination Methods 0.000 claims description 3
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
238000009835 boiling Methods 0.000 claims description 2
239000000356 contaminant Substances 0.000 claims description 2
RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 2
229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 2
IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 32
229910000041 hydrogen chloride Inorganic materials 0.000 description 32
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 21
JGDITNMASUZKPW-UHFFFAOYSA-K aluminium trichloride hexahydrate Chemical compound O.O.O.O.O.O.Cl[Al](Cl)Cl JGDITNMASUZKPW-UHFFFAOYSA-K 0.000 description 17
229940009861 aluminum chloride hexahydrate Drugs 0.000 description 17
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
238000001704 evaporation Methods 0.000 description 14
230000008020 evaporation Effects 0.000 description 14
239000000243 solution Substances 0.000 description 14
239000013078 crystal Substances 0.000 description 13
CAYKLJBSARHIDI-UHFFFAOYSA-K trichloroalumane;hydrate Chemical compound O.Cl[Al](Cl)Cl CAYKLJBSARHIDI-UHFFFAOYSA-K 0.000 description 12
VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 10
229910018072 Al 2 O 3 Inorganic materials 0.000 description 9
238000002425 crystallisation Methods 0.000 description 9
230000008025 crystallization Effects 0.000 description 9
229910052742 iron Inorganic materials 0.000 description 7
238000000184 acid digestion Methods 0.000 description 6
239000011575 calcium Substances 0.000 description 6
238000007872 degassing Methods 0.000 description 6
239000011734 sodium Substances 0.000 description 6
239000007790 solid phase Substances 0.000 description 6
239000010936 titanium Substances 0.000 description 6
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
229940063656 aluminum chloride Drugs 0.000 description 5
229910052791 calcium Inorganic materials 0.000 description 5
239000007791 liquid phase Substances 0.000 description 5
238000004537 pulping Methods 0.000 description 5
239000007787 solid Substances 0.000 description 5
229910052719 titanium Inorganic materials 0.000 description 5
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
229910010413 TiO 2 Inorganic materials 0.000 description 4
238000010521 absorption reaction Methods 0.000 description 4
238000005660 chlorination reaction Methods 0.000 description 4
239000002244 precipitate Substances 0.000 description 4
239000010802 sludge Substances 0.000 description 4
239000000725 suspension Substances 0.000 description 4
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
235000012211 aluminium silicate Nutrition 0.000 description 3
150000001805 chlorine compounds Chemical class 0.000 description 3
238000004090 dissolution Methods 0.000 description 3
238000005265 energy consumption Methods 0.000 description 3
239000007789 gas Substances 0.000 description 3
239000011777 magnesium Substances 0.000 description 3
229910052749 magnesium Inorganic materials 0.000 description 3
239000000463 material Substances 0.000 description 3
OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 3
235000011151 potassium sulphates Nutrition 0.000 description 3
150000003839 salts Chemical class 0.000 description 3
239000002904 solvent Substances 0.000 description 3
239000000126 substance Substances 0.000 description 3
239000005995 Aluminium silicate Substances 0.000 description 2
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
238000007792 addition Methods 0.000 description 2
238000006243 chemical reaction Methods 0.000 description 2
238000001514 detection method Methods 0.000 description 2
238000000605 extraction Methods 0.000 description 2
239000012530 fluid Substances 0.000 description 2
NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
238000004519 manufacturing process Methods 0.000 description 2
239000003960 organic solvent Substances 0.000 description 2
239000012071 phase Substances 0.000 description 2
229910052939 potassium sulfate Inorganic materials 0.000 description 2
239000000047 product Substances 0.000 description 2
238000000746 purification Methods 0.000 description 2
239000011347 resin Substances 0.000 description 2
229920005989 resin Polymers 0.000 description 2
229920006395 saturated elastomer Polymers 0.000 description 2
239000000377 silicon dioxide Substances 0.000 description 2
239000002002 slurry Substances 0.000 description 2
229910052708 sodium Inorganic materials 0.000 description 2
239000002351 wastewater Substances 0.000 description 2
NMUOPTDEIRDLRJ-UHFFFAOYSA-K OO.[Cl-].[Al+3].[Cl-].[Cl-] Chemical compound OO.[Cl-].[Al+3].[Cl-].[Cl-] NMUOPTDEIRDLRJ-UHFFFAOYSA-K 0.000 description 1
OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
229910004298 SiO 2 Inorganic materials 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
239000000654 additive Substances 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
229940037003 alum Drugs 0.000 description 1
239000007864 aqueous solution Substances 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
238000007664 blowing Methods 0.000 description 1
239000003153 chemical reaction reagent Substances 0.000 description 1
238000004140 cleaning Methods 0.000 description 1
239000008139 complexing agent Substances 0.000 description 1
238000009833 condensation Methods 0.000 description 1
230000005494 condensation Effects 0.000 description 1
239000000470 constituent Substances 0.000 description 1
125000004122 cyclic group Chemical group 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
230000008030 elimination Effects 0.000 description 1
238000003379 elimination reaction Methods 0.000 description 1
238000003912 environmental pollution Methods 0.000 description 1
230000005021 gait Effects 0.000 description 1
239000008246 gaseous mixture Substances 0.000 description 1
239000010842 industrial wastewater Substances 0.000 description 1
229910052500 inorganic mineral Inorganic materials 0.000 description 1
238000005342 ion exchange Methods 0.000 description 1
238000002955 isolation Methods 0.000 description 1
229910052751 metal Inorganic materials 0.000 description 1
239000002184 metal Substances 0.000 description 1
150000002739 metals Chemical class 0.000 description 1
239000011707 mineral Substances 0.000 description 1
230000020477 pH reduction Effects 0.000 description 1
238000005192 partition Methods 0.000 description 1
238000005191 phase separation Methods 0.000 description 1
239000011574 phosphorus Substances 0.000 description 1
229910052698 phosphorus Inorganic materials 0.000 description 1
239000001120 potassium sulphate Substances 0.000 description 1
238000004064 recycling Methods 0.000 description 1
230000008929 regeneration Effects 0.000 description 1
238000011069 regeneration method Methods 0.000 description 1
238000005201 scrubbing Methods 0.000 description 1
235000012239 silicon dioxide Nutrition 0.000 description 1
229910021653 sulphate ion Inorganic materials 0.000 description 1
238000005979 thermal decomposition reaction Methods 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
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
- C01F7/306—Thermal decomposition of hydrated chlorides, e.g. of aluminium trichloride hexahydrate
- 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
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
- C01F7/22—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with halides or halogen acids
- 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

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Life Sciences & Earth Sciences (AREA)
Geology (AREA)
Inorganic Chemistry (AREA)
Physics & Mathematics (AREA)
Thermal Sciences (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Manufacture And Refinement Of Metals (AREA)

DD79212965A 1978-05-18 1979-05-17 Verfahren zur gewinnung von reinem aluminiumoxid DD143595A5 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7815369A FR2426018A1 (fr)	1978-05-18	1978-05-18	Procede d'obtention d'alumine pure par attaque chlorhydrique de minerais alumineux et extraction des impuretes par un traitement sulfurique

Publications (1)

Publication Number	Publication Date
DD143595A5 true DD143595A5 (de)	1980-09-03

Family

ID=9208618

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DD79212965A DD143595A5 (de)	1978-05-18	1979-05-17	Verfahren zur gewinnung von reinem aluminiumoxid

Country Status (27)

Country	Link
US (1)	US4237102A (is)
EP (1)	EP0006070B1 (is)
JP (1)	JPS54150396A (is)
AR (1)	AR218538A1 (is)
AT (1)	AT375325B (is)
AU (1)	AU530734B2 (is)
BE (1)	BE876361A (is)
BR (1)	BR7903021A (is)
CA (1)	CA1103038A (is)
DD (1)	DD143595A5 (is)
DE (1)	DE2960300D1 (is)
DK (1)	DK203479A (is)
FR (1)	FR2426018A1 (is)
GR (1)	GR65615B (is)
HU (1)	HU184178B (is)
IL (1)	IL57287A (is)
IS (1)	IS2487A7 (is)
IT (1)	IT1114010B (is)
LU (1)	LU81288A1 (is)
MA (1)	MA18437A1 (is)
MX (1)	MX152070A (is)
NO (1)	NO154164C (is)
NZ (1)	NZ190464A (is)
OA (1)	OA06297A (is)
PL (1)	PL115225B1 (is)
SE (1)	SE438668B (is)
ZA (1)	ZA792411B (is)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4428912A (en)	1979-06-20	1984-01-31	Public Service Company Of New Mexico	Regeneration of chloridizing agent from chlorination residue
NO300004B1 (no) *	1994-03-30	1997-03-17	Elkem Materials	Fremgangsmåte for gjenvinning av metallklorid fra silisium eller ferrosilisiumlegering som er blitt reagert med kloreringsmidler
US5554352A (en) *	1995-05-09	1996-09-10	Construction Material Resources	Processed silica as a natural pozzolan for use as a cementitious component in concrete and concrete products
US6468483B2 (en)	2000-02-04	2002-10-22	Goldendale Aluminum Company	Process for treating alumina-bearing ores to recover metal values therefrom
RU2471010C2 (ru) *	2007-05-21	2012-12-27	Орбит Элюминэ Инк.	Способ извлечения алюминия и железа из глиноземистых руд
JP2014508863A (ja)	2011-03-18	2014-04-10	オーバイトアルミナインコーポレイテッド	アルミニウム含有材料から希土類元素を回収する方法
JP5894262B2 (ja)	2011-05-04	2016-03-23	オーバイトアルミナインコーポレイテッドＯｒｂｉｔｅＡｌｕｍｉｎａｅＩｎｃ．	種々の鉱石から希土類元素を回収する方法
US9150428B2 (en)	2011-06-03	2015-10-06	Orbite Aluminae Inc.	Methods for separating iron ions from aluminum ions
AU2012308068B2 (en)	2011-09-16	2015-02-05	Aem Technologies Inc.	Processes for preparing alumina and various other products
WO2013104059A1 (en)	2012-01-10	2013-07-18	Orbite Aluminae Inc.	Processes for treating red mud
CA2862307C (en)	2012-03-29	2015-12-01	Orbite Aluminae Inc.	Processes for treating fly ashes
WO2014008586A1 (en)	2012-07-12	2014-01-16	Orbite Aluminae Inc.	Processes for preparing titanium oxide and various other products
WO2014014379A1 (ru) *	2012-07-20	2014-01-23	Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр"	Способ получения глинозема
RU2544725C1 (ru) *	2012-07-20	2015-03-20	Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр"	Способ кислотной переработки красных шламов
RU2565217C2 (ru) *	2012-09-13	2015-10-20	Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр"	Способ получения глинозема
BR112015006536A2 (pt)	2012-09-26	2017-08-08	Orbite Aluminae Inc	processos para preparar alumina e cloreto de magnésio por lixiviação com hcl de vários materiais.
US9534274B2 (en)	2012-11-14	2017-01-03	Orbite Technologies Inc.	Methods for purifying aluminium ions
WO2014104920A1 (ru) *	2012-12-29	2014-07-03	Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр"	Способ получения глинозема из низкосортного алюминийсодержащего сырья
US11746021B2 (en)	2019-04-18	2023-09-05	Nextchem, Llc	High purity aluminum oxide via electrodialysis
EP4015456A1 (en) *	2020-12-17	2022-06-22	SiQAl UG (haftungsbeschränkt)	Methods for preparing alumina from a crude aluminum solution using al2(so4)3

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR574983A (fr) *	1923-11-30	1924-07-22		Procédé de production de sels d'aluminium chimiquement purs
US2376696A (en) *	1942-06-10	1945-05-22	Chemical Foundation Inc	Production of alumina
GB982098A (en) *	1961-07-10	1965-02-03	Anaconda Co	Improvements in production of alumina
US3406010A (en) *	1965-09-08	1968-10-15	Anaconda Co	Recovery of pure crystals of aici3.6h2o and production of aluminum oxide product therefrom
DE1592156C3 (de) *	1966-04-04	1978-06-29	Pechiney Compagnie De Produits Chimiques Et Electrometallurgiques, Paris	Verfahren zur Aluminiumsulfat- und Beglei tstoffgewinnung aus aluminiumhaltigen Erzen
FR1554586A (is) *	1966-04-28	1969-01-24
FR1541467A (fr) *	1967-10-19	1968-10-04	Anaconda Co	Procédé de séparation de sels métalliques purs à partir de leurs solutions aqueuses impures
FR1558347A (is) *	1967-10-25	1969-02-28
BE791752A (fr) *	1971-11-25	1973-05-22	Pechiney Aluminium	Procede de traitement acide continu des argiles et schistes crus
FR2381718A1 (fr) *	1977-02-28	1978-09-22	Pechiney Aluminium	Procede d'obtention d'alumine pure par attaque acide de minerais alumineux contenant d'autres elements
FR2381717A1 (fr) *	1977-02-28	1978-09-22	Pechiney Aluminium	Procede d'obtention d'alumine pure par attaque acide de minerais alumineux contenant d'autres elements

1978
- 1978-05-18 FR FR7815369A patent/FR2426018A1/fr active Granted
1979
- 1979-03-16 IS IS2487A patent/IS2487A7/is unknown
- 1979-05-08 US US06/035,440 patent/US4237102A/en not_active Expired - Lifetime
- 1979-05-10 DE DE7979420022T patent/DE2960300D1/de not_active Expired
- 1979-05-10 EP EP79420022A patent/EP0006070B1/fr not_active Expired
- 1979-05-15 HU HU79PE1079A patent/HU184178B/hu not_active IP Right Cessation
- 1979-05-15 AR AR276522A patent/AR218538A1/es active
- 1979-05-15 PL PL1979215597A patent/PL115225B1/pl unknown
- 1979-05-15 GR GR59093A patent/GR65615B/el unknown
- 1979-05-15 IL IL57287A patent/IL57287A/xx unknown
- 1979-05-15 AU AU47072/79A patent/AU530734B2/en not_active Ceased
- 1979-05-15 SE SE7904257A patent/SE438668B/sv not_active IP Right Cessation
- 1979-05-16 IT IT22699/79A patent/IT1114010B/it active
- 1979-05-16 BR BR7903021A patent/BR7903021A/pt unknown
- 1979-05-16 NO NO791639A patent/NO154164C/no unknown
- 1979-05-16 MX MX177676A patent/MX152070A/es unknown
- 1979-05-16 CA CA327,796A patent/CA1103038A/fr not_active Expired
- 1979-05-16 JP JP6025379A patent/JPS54150396A/ja active Granted
- 1979-05-16 NZ NZ190464A patent/NZ190464A/xx unknown
- 1979-05-17 ZA ZA792411A patent/ZA792411B/xx unknown
- 1979-05-17 MA MA18631A patent/MA18437A1/fr unknown
- 1979-05-17 DK DK203479A patent/DK203479A/da unknown
- 1979-05-17 DD DD79212965A patent/DD143595A5/de unknown
- 1979-05-17 AT AT0364779A patent/AT375325B/de not_active IP Right Cessation
- 1979-05-18 LU LU81288A patent/LU81288A1/xx unknown
- 1979-05-18 BE BE0/195241A patent/BE876361A/xx not_active IP Right Cessation
- 1979-07-17 OA OA56851A patent/OA06297A/xx unknown

Also Published As

Publication number	Publication date
US4237102A (en)	1980-12-02
IS2487A7 (is)	1979-08-03
ATA364779A (de)	1983-12-15
BE876361A (fr)	1979-11-19
IL57287A0 (en)	1979-09-30
DK203479A (da)	1979-11-19
AT375325B (de)	1984-07-25
ZA792411B (en)	1980-05-28
FR2426018B1 (is)	1981-11-27
JPS5747131B2 (is)	1982-10-07
EP0006070B1 (fr)	1981-04-29
NO791639L (no)	1979-11-20
JPS54150396A (en)	1979-11-26
PL115225B1 (en)	1981-03-31
MA18437A1 (fr)	1979-12-31
NO154164C (no)	1986-07-30
IL57287A (en)	1982-07-30
HU184178B (en)	1984-07-30
DE2960300D1 (en)	1981-08-06
NZ190464A (en)	1982-02-23
AR218538A1 (es)	1980-06-13
LU81288A1 (fr)	1979-12-07
SE7904257L (sv)	1979-11-19
OA06297A (fr)	1981-06-30
EP0006070A1 (fr)	1979-12-12
BR7903021A (pt)	1979-12-04
IT1114010B (it)	1986-01-27
MX152070A (es)	1985-05-28
PL215597A1 (is)	1980-02-11
FR2426018A1 (fr)	1979-12-14
AU530734B2 (en)	1983-07-28
SE438668B (sv)	1985-04-29
AU4707279A (en)	1979-11-22
CA1103038A (fr)	1981-06-16
GR65615B (en)	1980-10-14
IT7922699A0 (it)	1979-05-16
NO154164B (no)	1986-04-21

Publication	Publication Date	Title
DD143595A5 (de)	1980-09-03	Verfahren zur gewinnung von reinem aluminiumoxid
DE2906646C2 (is)	1987-06-19
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