GB1500014A - Method of preparing magnesium oxide - Google Patents
Method of preparing magnesium oxideInfo
- Publication number
- GB1500014A GB1500014A GB1167575A GB1167575A GB1500014A GB 1500014 A GB1500014 A GB 1500014A GB 1167575 A GB1167575 A GB 1167575A GB 1167575 A GB1167575 A GB 1167575A GB 1500014 A GB1500014 A GB 1500014A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnesium
- sulphite
- solution
- separated
- oxide
- 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.)
- Expired
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
-
- 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
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/20—Obtaining alkaline earth metals or magnesium
- C22B26/22—Obtaining magnesium
-
- 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)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Treating Waste Gases (AREA)
Abstract
1500014 Magnesium oxide VEREENIGING REFRACTORIES Ltd 20 March 1975 [22 March 1974] 11675/75 Heading CIA Magnesium oxide is obtained from a material containing a magnesium compound by treating a slurry thereof with sulphur dioxide to form a solution of magnesium bisulphite which is separated from the insoluble residue containing undissolved impurities, a magnesium sulphite hydrate is then precipitated from the solution and is separated off and dehydrated before being subjected to flash decomposition by rapidly introducing the sulphite into a heated furnace at a temperature of at least 600‹ C. to form magnesium oxide and sulphur dioxide. The oxide may be obtained from magnesium carbonate and/or silicate or magnesite contaminated with silica in which case the starting material is calcined before formation of the aqueous slurry. If the starting material is calcareous or dolomitic magnesite the slurry may be treated with SO 2 at a pH above 3 to form soluble magnesium bisulphite and insoluble calcium sulphite which is separated from the solution before precipitation of the magnesium sulphite. The MgSO 3 may be formed by adding a base to the solution, e.g. magnesia, magnesium hydroxide or ammonia.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA00741871A ZA741871B (en) | 1974-03-22 | 1974-03-22 | The beneficiation of magnesite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1500014A true GB1500014A (en) | 1978-02-08 |
Family
ID=25567519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1167575A Expired GB1500014A (en) | 1974-03-22 | 1975-03-20 | Method of preparing magnesium oxide |
Country Status (10)
| Country | Link |
|---|---|
| AT (1) | AT343596B (en) |
| BR (1) | BR7501752A (en) |
| DE (1) | DE2512272A1 (en) |
| ES (1) | ES435863A1 (en) |
| FR (1) | FR2264878B1 (en) |
| GB (1) | GB1500014A (en) |
| IN (1) | IN143069B (en) |
| IT (1) | IT1037138B (en) |
| YU (1) | YU36900B (en) |
| ZA (1) | ZA741871B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA763419B (en) | 1976-06-09 | 1977-12-28 | Anglo Amer Corp South Africa | Urgrading of magnesium containing materials |
| US4124683A (en) | 1977-09-30 | 1978-11-07 | Universite De Sherbrooke | Recovery of magnesium from magnesium silicates |
| AT366986B (en) * | 1979-07-16 | 1982-05-25 | Waagner Biro Ag | METHOD AND DEVICE FOR PRODUCING TECHNICAL PURE MAGNESIUM COMPOUNDS |
| CS225767B1 (en) * | 1982-01-14 | 1984-02-13 | Najmr Stanislav | The purification of magnesium raw materials |
| AT397929B (en) * | 1992-12-04 | 1994-08-25 | Chemiefaser Lenzing Ag | METHOD AND SYSTEM FOR DRYING AND SUBJECT CLEAVING |
-
1974
- 1974-03-22 ZA ZA00741871A patent/ZA741871B/en unknown
-
1975
- 1975-03-20 GB GB1167575A patent/GB1500014A/en not_active Expired
- 1975-03-20 DE DE19752512272 patent/DE2512272A1/en active Pending
- 1975-03-21 ES ES435863A patent/ES435863A1/en not_active Expired
- 1975-03-22 IN IN583/CAL/75A patent/IN143069B/en unknown
- 1975-03-24 AT AT222875A patent/AT343596B/en not_active IP Right Cessation
- 1975-03-24 IT IT2159375A patent/IT1037138B/en active
- 1975-03-24 FR FR7509088A patent/FR2264878B1/fr not_active Expired
- 1975-03-24 BR BR7501752A patent/BR7501752A/en unknown
- 1975-03-24 YU YU72375A patent/YU36900B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA741871B (en) | 1975-11-26 |
| BR7501752A (en) | 1975-12-23 |
| ES435863A1 (en) | 1977-03-16 |
| IT1037138B (en) | 1979-11-10 |
| DE2512272A1 (en) | 1975-09-25 |
| AT343596B (en) | 1978-06-12 |
| FR2264878B1 (en) | 1980-04-04 |
| ATA222875A (en) | 1977-10-15 |
| IN143069B (en) | 1977-09-24 |
| YU36900B (en) | 1984-08-31 |
| FR2264878A1 (en) | 1975-10-17 |
| YU72375A (en) | 1982-06-18 |
| AU7932375A (en) | 1976-09-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |