FR2425404A1 - Procede de production a l'echelle industrielle d'oxyde de magnesium tres pur - Google Patents
Procede de production a l'echelle industrielle d'oxyde de magnesium tres purInfo
- Publication number
- FR2425404A1 FR2425404A1 FR7911120A FR7911120A FR2425404A1 FR 2425404 A1 FR2425404 A1 FR 2425404A1 FR 7911120 A FR7911120 A FR 7911120A FR 7911120 A FR7911120 A FR 7911120A FR 2425404 A1 FR2425404 A1 FR 2425404A1
- Authority
- FR
- France
- Prior art keywords
- impurities
- stage
- magnesium oxide
- pure magnesium
- attack
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
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
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
- C01F5/06—Magnesia by thermal decomposition of magnesium compounds
- C01F5/10—Magnesia by thermal decomposition of magnesium compounds by thermal decomposition of magnesium chloride with water vapour
-
- 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
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Treating Waste Gases (AREA)
- Removal Of Specific Substances (AREA)
Abstract
PROCEDE DE PRODUCTION D'OXYDE DE MAGNESIUM TRES PUR PAR DECOMPOSITION THERMIQUE (STADE 6) D'UNE SAUMURE DE CHLORURE DE MAGNESIUM QUI A ETE PREALABLEMENT PURIFIEE ET QUI EST OBTENUE PAR ATTAQUE D'UNE MATIERE PREMIERE MAGNESIFERE AVEC DE L'ACIDE CHLORHYDRIQUE (STADE 1). CE PROCEDE EST CARACTERISE EN CE QUE L'ON COMMENCE PAR CONCENTRER LA SAUMURE RESULTANT DE L'ATTAQUE PAR L'ACIDE CHLORHYDRIQUE (STADE 3), APRES QUOI SEULEMENT ON PRECIPITE ET ON SEPARE LES IMPURETES (STADES 4 ET 5), LE CALCIUM ETANT SEPARE A L'ETAT DE SULFATE DE CALCIUM. ON PEUT OPERER UNE SEPARATION COMMUNE DE TOUTES LES IMPURETES OU BIEN SEPARER A PART D'UNE PART LE SULFATE DE CALCIUM ET D'AUTRE PART LES AUTRES IMPURETES. IL PERMET UNE PURIFICATION TRES RAPIDE ET EFFICACE AVEC DES INSTALLATIONS MOINS COUTEUSES ET UNE MOINDRE CONSOMMATION D'ENERGIE QUE DANS LES PROCEDES ANTERIEURS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT332878A AT357138B (de) | 1978-05-08 | 1978-05-08 | Verfahren zur grosstechnischen gewinnung von magnesiumoxid hoher reinheit |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2425404A1 true FR2425404A1 (fr) | 1979-12-07 |
FR2425404B1 FR2425404B1 (fr) | 1983-06-17 |
Family
ID=3548866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7911120A Granted FR2425404A1 (fr) | 1978-05-08 | 1979-05-03 | Procede de production a l'echelle industrielle d'oxyde de magnesium tres pur |
Country Status (12)
Country | Link |
---|---|
US (1) | US4255399A (fr) |
AT (1) | AT357138B (fr) |
BR (1) | BR7902772A (fr) |
CA (1) | CA1115029A (fr) |
CS (1) | CS209923B2 (fr) |
DE (1) | DE2915129C2 (fr) |
ES (1) | ES480300A1 (fr) |
FR (1) | FR2425404A1 (fr) |
GB (1) | GB2023563B (fr) |
GR (1) | GR66641B (fr) |
IT (1) | IT1118622B (fr) |
ZA (1) | ZA792020B (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT367376B (de) * | 1979-12-06 | 1982-06-25 | Veitscher Magnesitwerke Ag | Verfahren zur abtrennung von eisen-, aluminiumund manganverunreinigungen aus salzsauren magnesiumchloridloesungen |
AT375328B (de) * | 1980-11-07 | 1984-07-25 | Veitscher Magnesitwerke Ag | Verfahren zur herstellung von sintermagnesia |
AT388392B (de) * | 1987-06-26 | 1989-06-12 | Veitscher Magnesitwerke Ag | Verfahren zur herstellung von reinem, insbesondere zur herstellung feuerfester erzeugnisse geeignetem magnesiumoxid |
US5286285A (en) * | 1989-05-05 | 1994-02-15 | Veitscher Magnesitwerke-Actien-Gesellschaft | Finely powdery magnesium hydroxide and a process for preparing thereof |
US7771682B2 (en) * | 2006-01-31 | 2010-08-10 | Council Of Scientific And Industrial Research | Process for the preparation of magnesia (MgO) from crude Mg (OH)2 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE298415C (fr) * | ||||
BE421469A (fr) * | 1936-05-09 | |||
FR2080663A1 (fr) * | 1970-02-20 | 1971-11-19 | Veitscher Magnesitwerke Ag | |
FR2332235A1 (fr) * | 1975-11-20 | 1977-06-17 | Veitscher Magnesitwerke Ag | Preparation d'oxyde de magnesium tres pur a l'echelle industrielle |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD87773A (fr) * | ||||
US2473534A (en) * | 1942-01-23 | 1949-06-21 | Rex B Lloyd | Production of magnesium oxide |
US3980753A (en) * | 1970-02-20 | 1976-09-14 | Veitscher Magnesitwerke-Aktiengesellschaft | Industrial process of preparing magnesia of high purity |
NO124158B (fr) * | 1970-04-16 | 1972-03-13 | Norsk Hydro As | |
DD117433A1 (fr) * | 1975-02-28 | 1976-01-12 | ||
AT340878B (de) * | 1976-04-07 | 1978-01-10 | Veitscher Magnesitwerke Ag | Verfahren zur herstellung von reinem magnesiumoxid |
-
1978
- 1978-05-08 AT AT332878A patent/AT357138B/de not_active IP Right Cessation
-
1979
- 1979-04-12 DE DE2915129A patent/DE2915129C2/de not_active Expired
- 1979-04-16 GR GR58911A patent/GR66641B/el unknown
- 1979-04-23 CA CA326,070A patent/CA1115029A/fr not_active Expired
- 1979-04-26 ZA ZA792020A patent/ZA792020B/xx unknown
- 1979-05-03 GB GB7915406A patent/GB2023563B/en not_active Expired
- 1979-05-03 FR FR7911120A patent/FR2425404A1/fr active Granted
- 1979-05-05 CS CS793112A patent/CS209923B2/cs unknown
- 1979-05-07 IT IT67961/79A patent/IT1118622B/it active
- 1979-05-07 ES ES480300A patent/ES480300A1/es not_active Expired
- 1979-05-08 US US06/037,065 patent/US4255399A/en not_active Expired - Lifetime
- 1979-05-08 BR BR7902772A patent/BR7902772A/pt unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE298415C (fr) * | ||||
BE421469A (fr) * | 1936-05-09 | |||
FR2080663A1 (fr) * | 1970-02-20 | 1971-11-19 | Veitscher Magnesitwerke Ag | |
FR2332235A1 (fr) * | 1975-11-20 | 1977-06-17 | Veitscher Magnesitwerke Ag | Preparation d'oxyde de magnesium tres pur a l'echelle industrielle |
Also Published As
Publication number | Publication date |
---|---|
CA1115029A (fr) | 1981-12-29 |
GB2023563B (en) | 1982-07-07 |
ES480300A1 (es) | 1979-12-16 |
DE2915129A1 (de) | 1979-11-15 |
AT357138B (de) | 1980-06-25 |
GR66641B (fr) | 1981-04-03 |
FR2425404B1 (fr) | 1983-06-17 |
IT7967961A0 (it) | 1979-05-07 |
GB2023563A (en) | 1980-01-03 |
DE2915129C2 (de) | 1982-03-25 |
IT1118622B (it) | 1986-03-03 |
US4255399A (en) | 1981-03-10 |
ZA792020B (en) | 1980-04-30 |
CS209923B2 (en) | 1981-12-31 |
ATA332878A (de) | 1979-11-15 |
BR7902772A (pt) | 1979-11-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2409962A1 (fr) | Procede pour separer des composes chimiques d'une eau salee | |
FR2417509A1 (fr) | Procede d'obtention d'oxyde d'ethylene a tres basse teneur en impuretes aldehydiques | |
EP1002787A4 (fr) | Procede de purification de l'acide (meth)acrylique | |
FR2425404A1 (fr) | Procede de production a l'echelle industrielle d'oxyde de magnesium tres pur | |
US20190225492A1 (en) | Acid recovery from acid-rich solutions | |
ATE15207T1 (de) | Verfahren zur herstellung von ursodeoxycholsaeure hoher reinheit. | |
GB1443876A (en) | Purification of wet-processed phosphoric acid | |
US3823081A (en) | Acid mine water treatment process | |
ATE7790T1 (de) | Verfahren zur abtrennung von beta-sitosterol aus einer steroidmischung. | |
BR8402801A (pt) | Processo de purificacao de uma mistura agua-alcool em c1-c2 proveniente de um processo de fabricacao industrial de alcool em c1-c2 | |
DE3771423D1 (de) | Verfahren zur herstellung von o-substituierten hydroxylamin-hydrochloriden. | |
US1500126A (en) | Process of purifying brine for electrolysis | |
UST102906I4 (en) | Method of removing phosphorus impurities from yellowcake | |
US4036941A (en) | Preparation of ferric sulfate solutions | |
FR2370699A1 (fr) | Procede d'epuration biologique d'eaux residuaires et installation pour la mise en oeuvre de ce procede | |
ATE241585T1 (de) | Verfahren zur gewinnung von pivalinsäure aus abfallreaktionsgemischen | |
ES8105678A1 (es) | Procedimiento para la purificacion de acido fosforico de procedimiento en humedo | |
FR2376069A1 (fr) | Procede de traitement en continu des acides nitriques issus de la fabrication des derives nitres des alkylphenols | |
JPS5575919A (en) | Brine mud utilizing method | |
SU983057A1 (ru) | Способ получени кристаллического сульфата кадми | |
SU138223A1 (ru) | Способ интенсификации процесса очистки рассола дл электролиза хлористого натри | |
SU1242467A1 (ru) | Способ очистки нитрата лити от берилли и железа | |
Gancy et al. | Brine Purification Process | |
US4233463A (en) | Process for the separation of 2,4-dinitro-6-t-butyl-3-methylanisole, referred to as musk ambrette, from the crude synthesis mixtures in which it is present | |
DE2334521B2 (de) | Verfahren zur gewinnung von gereinigten enzymloesungen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |