BE335943A - - Google Patents
Info
- Publication number
- BE335943A BE335943A BE335943DA BE335943A BE 335943 A BE335943 A BE 335943A BE 335943D A BE335943D A BE 335943DA BE 335943 A BE335943 A BE 335943A
- Authority
- BE
- Belgium
- Prior art keywords
- solution
- sodium
- magnesia
- sodium sulphate
- extracting
- Prior art date
Links
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- 229910000514 dolomite Inorganic materials 0.000 claims description 4
- 239000010459 dolomite Substances 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims 1
- 239000006227 byproduct Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 5
- 239000001095 magnesium carbonate Substances 0.000 description 4
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 4
- 239000001175 calcium sulphate Substances 0.000 description 3
- 235000011132 calcium sulphate Nutrition 0.000 description 3
- 235000019341 magnesium sulphate Nutrition 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 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
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical class [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 101100072406 Mus musculus Il20 gene Proteins 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000002364 soil amendment Substances 0.000 description 1
- 238000005406 washing Methods 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
- C01F5/00—Compounds of magnesium
- C01F5/40—Magnesium sulfates
Landscapes
- 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)
Description
<Desc/Clms Page number 1>
Procédé pour extraire la magnésie de ses minerais oxydés ou carbonates,particulièrement de la dolomie.
La présente invention a pour objet un procédé pour extraire la magnésie de ses minerais oxydés ou carbonatés, particulièrement de la dolomie (carbonate naturel de calcium et de magnésium pouvant contenir jusqu'à 45% de carbonate de magnésium).
Suivant ce procédé,la dolomie crue est attaquée par une solution de bisulfate de sodium,résidu de certaines fabri- cations.
On obtient ainsi une solution des sulfates neutres de sodium et de magnésium et un dépôt de sulfate de calcium, pratiquement insoluble. Il se dégage en même temps de l'anhydride' carbonique qu'on peut récupérer .
Les proportions à employer de chaque matière corres- pondent très sensiblement aux équations suivantes :
EMI1.1
2 NaR so4 * Mg go3 = 1% 8.04 * Na2S04 # Il20 # a02 a NAIL S04 f- Ca GOS - Sa 804 .. Ha2SQ4 tir :a.20 .. cr02..
<Desc/Clms Page number 2>
Il est facile de précipiter les impuretés de la solu- tion des sulfates de magnésium et de sodium,solution qu'on sépare ensuite de ces impuretés et du sulfate de calcium par filtration suivie de lavage.
Le sulfate de calcium peut trouver des débouchés en qualité d'amendement pour les terres,ou comme plâtre,après cuisson; il peut également être vendu comme sulfate de chaux précipité,après purification.
De la solution des sulfates de sodium et de magnésium, on précipite du carbonate de magnésium par addition de carbonate de sodium,suivant l'équation :
EMI2.1
Ka S04 * 2 Na2504: .. Ia2ao3 a ig ao3 .. S :ra2S04..
La réaction est quantitative. On évite la formation de carbonate de magnésium léger en opèrant à chaud .mais au- dessous de 100 C Le précipité de carbonate de magnésium est facile à filtrer et à laver; il est séché à l'étuve pour être finalement transformé en magnésie par calcination.
<Desc / Clms Page number 1>
Process for extracting magnesia from its oxidized ores or carbonates, particularly dolomite.
The present invention relates to a process for extracting magnesia from its oxidized or carbonated ores, particularly dolomite (natural calcium and magnesium carbonate which may contain up to 45% of magnesium carbonate).
According to this process, the raw dolomite is attacked by a solution of sodium bisulphate, a residue of certain manufactures.
This gives a solution of neutral sodium and magnesium sulphates and a deposit of calcium sulphate, practically insoluble. At the same time, carbon dioxide is released which can be recovered.
The proportions to be used for each material correspond very approximately to the following equations:
EMI1.1
2 NaR so4 * Mg go3 = 1% 8.04 * Na2S04 # Il20 # a02 a NAIL S04 f- Ca GOS - Sa 804 .. Ha2SQ4 shot: a.20 .. cr02 ..
<Desc / Clms Page number 2>
It is easy to precipitate the impurities from the solution of the magnesium and sodium sulphates, which solution is then separated from these impurities and from the calcium sulphate by filtration followed by washing.
Calcium sulphate can find outlets as a soil amendment, or as plaster, after cooking; it can also be sold as precipitated lime sulfate, after purification.
From the solution of sodium and magnesium sulphates, magnesium carbonate is precipitated by adding sodium carbonate, according to the equation:
EMI2.1
Ka S04 * 2 Na2504: .. Ia2ao3 a ig ao3 .. S: ra2S04 ..
The reaction is quantitative. The formation of light magnesium carbonate is avoided by operating at high temperature, but below 100 C. The precipitate of magnesium carbonate is easy to filter and wash; it is oven-dried to be finally transformed into magnesia by calcination.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE335943A true BE335943A (en) |
Family
ID=14306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE335943D BE335943A (en) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE335943A (en) |
-
0
- BE BE335943D patent/BE335943A/fr unknown
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