ES388402A1 - Process for the large scale production of magnesium oxide of high purity - Google Patents
Process for the large scale production of magnesium oxide of high purityInfo
- Publication number
- ES388402A1 ES388402A1 ES388402A ES388402A ES388402A1 ES 388402 A1 ES388402 A1 ES 388402A1 ES 388402 A ES388402 A ES 388402A ES 388402 A ES388402 A ES 388402A ES 388402 A1 ES388402 A1 ES 388402A1
- Authority
- ES
- Spain
- Prior art keywords
- magnesium
- hydrochloric acid
- oxide
- precipitate
- impurities
- 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
-
- 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
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/26—Magnesium halides
- C01F5/30—Chlorides
-
- 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)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Procedure for the large-scale technical obtaining of high purity magnesium oxide with content of Fe, Al, Cr, Mn, Si, Ti, Na, K, B oxides, in each case below 0.1%, preferably below 0.05%, and a MgO content above 98%, preferably above 99%, from doped magnesium-containing starting substances, preferably minerals, by dissolving them in hydrochloric acid, addition of more quantity of substances containing magnesium and/or calcium for the precipitation of impurities, extraction of the precipitate and transformation into magnesia of the solution thus purified, characterized in that it starts from a material in which the weight ratio of the susceptible ions if precipitated as oxide-hydrates, calculated as the ratio of the sum of Fe2O3 + Al2O3 + Cr2O3 + Mn3O4 to the sum of SiO2 + TiO2 + B2O3 it is at least 1: 3 and is preferably above 1: 1, and because as a main component it contains magnesium carbonate, magnesium oxide, magnesium hydroxide or mixtures of these compounds, because the dissolution of this starting material in hydrochloric acid of a concentration of 15-32% by weight, preferably 18 -22% by weight, takes place above 70ºC, and because the resulting first acidic brine is adjusted to a pH value of 4-9, preferably 6-8, whereby sesquioxide impurities precipitate in the form of oxide-hydrates and in this case entrain the impurities dissolved in any case colloidal or adsorbable (SiO2, TiO2, B2O3), the precipitate is separated, and because the very pure MgCl2 brine is then transformed into MgO by means of a thermal decomposition of by yes known, but at temperatures between approximately 400 and 900ºC, preferably between 550 and 750ºC, and the resulting gaseous HCl, also in a manner known per se, is obtained as hydrochloric acid with the con concentration existing at the beginning of the procedure, that is, the starting concentration, and why this hydrochloric acid is used again for the dissolution of the starting material. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT158770A AT319188B (en) | 1970-02-20 | 1970-02-20 | Process for the industrial production of high-purity magnesium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES388402A1 true ES388402A1 (en) | 1973-05-01 |
Family
ID=3516642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES388402A Expired ES388402A1 (en) | 1970-02-20 | 1971-02-18 | Process for the large scale production of magnesium oxide of high purity |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT319188B (en) |
| BR (1) | BR7101150D0 (en) |
| CA (1) | CA942033A (en) |
| DE (1) | DE2107844B2 (en) |
| ES (1) | ES388402A1 (en) |
| FR (1) | FR2080663B1 (en) |
| GB (1) | GB1332736A (en) |
| TR (1) | TR16634A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT334273B (en) * | 1974-03-25 | 1976-01-10 | Veitscher Magnesitwerke Ag | METHOD OF HEAT TREATMENT OF FINE GRAIN OR LIQUID MATERIAL AND OVEN TO CARRY OUT THE PROCEDURE |
| AT357138B (en) * | 1978-05-08 | 1980-06-25 | Veitscher Magnesitwerke Ag | METHOD FOR THE LARGE ENGINEERING OF MAGNESIUM OXIDE HIGH PURITY |
| AT367376B (en) * | 1979-12-06 | 1982-06-25 | Veitscher Magnesitwerke Ag | METHOD FOR SEPARATING IRON, ALUMINUM AND MANGANE IMPURITIES FROM SALT ACID MAGNESIUM CHLORIDE SOLUTIONS |
| AT388392B (en) * | 1987-06-26 | 1989-06-12 | Veitscher Magnesitwerke Ag | METHOD FOR THE PRODUCTION OF PURE MAGNESIUM OXIDE, IN PARTICULAR FOR THE PRODUCTION OF REFRACTORY-RESISTANT PRODUCTS |
| CN1298870C (en) * | 2005-05-20 | 2007-02-07 | 孔令旭 | Treatment method of magnesite |
| CN109019644A (en) * | 2018-08-20 | 2018-12-18 | 镇江裕太防爆电加热器有限公司 | A kind of magnesium tube material production equipment for high temperature heater (HTH) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT108413B (en) * | 1926-08-28 | 1927-12-27 | Emil Ing Seidler | Process for the production of magnesium salts or magnesia from waste materials containing magnesia. |
| US2082101A (en) * | 1931-12-31 | 1937-06-01 | N I Stone | Process of treating a mixture of calcium and magnesium hydroxides |
| DE721358C (en) * | 1935-08-14 | 1942-06-02 | Metallgesellschaft Ag | Production of magnesium oxide from water-containing magnesium chloride solutions or melts |
| BE421469A (en) * | 1936-05-09 | |||
| AT154567B (en) * | 1936-06-23 | 1938-10-10 | Verwertung Chemisch Tech Verfa | Process for the production of magnesium compounds, in particular magnesium chloride. |
| US2473534A (en) * | 1942-01-23 | 1949-06-21 | Rex B Lloyd | Production of magnesium oxide |
| US2398493A (en) * | 1944-02-04 | 1946-04-16 | Int Minerals & Chem Corp | Production of magnesium chloride from serpentine |
| US2549798A (en) * | 1947-01-17 | 1951-04-24 | Edwin A Gee | Production of magnesium chloride from magnesium silicate ore |
| DE930140C (en) * | 1950-10-04 | 1955-07-11 | Henkel & Cie Gmbh | Process for the removal of manganese from water |
| BE548967A (en) * | 1954-12-08 | 1956-07-14 | ||
| DE1102712B (en) * | 1957-03-28 | 1961-03-23 | Int Minerals & Chem Corp | Process for the production of magnesium oxide by thermal decomposition of magnesium chloride hydrate |
| ES291953A1 (en) * | 1962-10-03 | 1964-01-16 | Aluminium Lab Ltd | Method of preparing a magnesium hydroxide product (Machine-translation by Google Translate, not legally binding) |
| GB1018013A (en) * | 1963-05-21 | 1966-01-26 | Twin Sisters Magnesia & Chemic | Production of magnesium and other metal chlorides from siliceous magnesium minerals |
| US3341290A (en) * | 1963-11-04 | 1967-09-12 | Dow Chemical Co | Preparation of high purity magnesium oxide from magnesium salt solutions |
| US3567378A (en) * | 1967-09-18 | 1971-03-02 | Nat Lead Co | Recovery of magnesium values from magnesium and sulfate containng aqueous salt solutions |
-
1970
- 1970-02-20 AT AT158770A patent/AT319188B/en not_active IP Right Cessation
-
1971
- 1971-02-03 CA CA104,434A patent/CA942033A/en not_active Expired
- 1971-02-18 DE DE19712107844 patent/DE2107844B2/en not_active Ceased
- 1971-02-18 TR TR1663471A patent/TR16634A/en unknown
- 1971-02-18 ES ES388402A patent/ES388402A1/en not_active Expired
- 1971-02-19 FR FR7105707A patent/FR2080663B1/fr not_active Expired
- 1971-02-19 BR BR115071A patent/BR7101150D0/en unknown
- 1971-04-19 GB GB2297771A patent/GB1332736A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1332736A (en) | 1973-10-03 |
| CA942033A (en) | 1974-02-19 |
| FR2080663B1 (en) | 1973-11-23 |
| AT319188B (en) | 1974-12-10 |
| FR2080663A1 (en) | 1971-11-19 |
| BR7101150D0 (en) | 1973-03-08 |
| TR16634A (en) | 1973-01-01 |
| DE2107844B2 (en) | 1975-12-04 |
| DE2107844A1 (en) | 1971-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19850227 |