DE20277C - Process for the preparation of calcium oxychloride for the purification of lime and for the application of calcium oxychloride for the production of magnesium oxide hydrate from chloromagnesium solution - Google Patents
Process for the preparation of calcium oxychloride for the purification of lime and for the application of calcium oxychloride for the production of magnesium oxide hydrate from chloromagnesium solutionInfo
- Publication number
- DE20277C DE20277C DENDAT20277D DE20277DA DE20277C DE 20277 C DE20277 C DE 20277C DE NDAT20277 D DENDAT20277 D DE NDAT20277D DE 20277D A DE20277D A DE 20277DA DE 20277 C DE20277 C DE 20277C
- Authority
- DE
- Germany
- Prior art keywords
- lime
- calcium
- solution
- calcium oxychloride
- oxychloride
- 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.)
- Active
Links
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 title claims description 12
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims description 9
- 235000015450 Tilia cordata Nutrition 0.000 title claims description 9
- 235000011941 Tilia x europaea Nutrition 0.000 title claims description 9
- 239000004571 lime Substances 0.000 title claims description 9
- FKLRBKPRLBWRKK-UHFFFAOYSA-N magnesium;oxygen(2-);hydrate Chemical compound O.[O-2].[Mg+2] FKLRBKPRLBWRKK-UHFFFAOYSA-N 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title claims 2
- FOSCDBCOYQJHPN-UHFFFAOYSA-M Cl[Mg] Chemical compound Cl[Mg] FOSCDBCOYQJHPN-UHFFFAOYSA-M 0.000 title description 2
- 238000000034 method Methods 0.000 title description 2
- 238000000746 purification Methods 0.000 title 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 10
- 239000001110 calcium chloride Substances 0.000 claims description 10
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- 235000012255 calcium oxide Nutrition 0.000 claims description 5
- -1 potassium chlorine Chlorine Chemical compound 0.000 claims description 5
- 150000002506 iron compounds Chemical class 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 2
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching Effects 0.000 claims 1
- 239000002002 slurry Substances 0.000 claims 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L MgCl2 Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 241000272476 Gyps Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 229910000460 iron oxide Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
-
- 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
- C01F5/14—Magnesium hydroxide
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
KAISERLICHESIMPERIAL
PATENTAMTPATENT OFFICE
in LEOPOLDSHALL.in LEOPOLDSHALL.
Eine chlorcalciumhaltige Lösung von 1,12 bis 1,15 spec. Gew., wie sie bei der Darstellung von Magnesiumoxydhydrat aus chlormagnesiumhaltigen Laugen und Aetzkalk gewonnen wird, dient zum Löschen von gewöhnlichem gebrannten Kalk.A calcium chloride solution of 1.12 up to 1.15 spec. Wt. As in the presentation of magnesium oxide hydrate is obtained from alkaline solutions containing magnesium chloride and quicklime, serves to extinguish common quicklime.
Es bildet sich dabei infolge Erwärmens und AVasserabgabe der Lauge an Calciumoxyd eine Lösung von Calciumoxychlorid (3 Ca O · Ca CP -\- 16 H^ O) in Chlorcalciumlauge, die in Bezug auf Chlorcalcium concentrirter ist als die angewendete Lauge. Andererseits entsteht ein Kalkbrei, vermischt mit an Thon und Eisen reicheren Kalktheilchen, welche sich in Chlorcalciumlauge nicht lösen und daher in gröfseren oder kleineren Stücken zurückbleiben.A solution of calcium oxychloride (3 Ca O · Ca CP - \ - 16 H ^ O) in calcium chloride is formed, which is more concentrated in relation to calcium chloride than the alkali used. On the other hand, a lime pulp is produced, mixed with lime particles richer in clay and iron, which do not dissolve in calcium chloride and therefore remain in larger or smaller pieces.
Nach dem Absitzen des Kalkes wird die klare calciumoxychloridhaltige Lösung abgezogen und das erhaltene Gemenge von gelöschtem und nichtgelöschtem Kalk mit weiteren Mengen von frischer Chlorcalciumlauge einem Schiernmprocesse unterworfen, um Kalkbrei in möglichst reiner Form zu gewinnen.After the lime has settled, the clear solution containing calcium oxychloride is drawn off and the obtained mixture of slaked and non-slaked lime with others Quantities of fresh calcium chloride are subjected to a grinding process to convert lime paste into to obtain as pure a form as possible.
Hat die Lösung von Calciumoxychlorid durch einmalige Benutzung noch nicht die genügende Concentration erlangt, so dient sie ein zweites und drittes Mal zum Löschen frischer Portionen gebrannten Kalkes, bis sie ein spec. Gew. von ca. 1,3 zeigt.The solution of calcium oxychloride is not sufficient after a single use Concentration is achieved, it is used a second and third time to delete fresh portions burnt lime until it is a spec. Shows weight of approx. 1.3.
In dieser Concentration wird die Calciumoxychloridlösung in entsprechender Menge mit den chlormagnesiumhaltigen Laugen der Chlorkaliumfabrikation, welche annähernd dieselbe Concentration haben, vermischt. Es findet dabei eine Zersetzung des Calciumoxychlorides statt; der freiwerdende Kalk fällt das in den Chlormagnesiumlaugen vorhandene Eisenoxyd ans. Das Chlorcalcium dient zur Fällung vorhandener Schwefelsäure in P'orm von Gyps.The calcium oxychloride solution is in this concentration in the appropriate amount with the chlorine-magnesium-containing lyes from the chlorine-potassium production, which have approximately the same concentration, mixed. There is a decomposition of the calcium oxychloride; the released lime accumulates the iron oxide present in the chlorine magnesium lye. The calcium chloride serves to precipitate existing sulfuric acid in the form of Gyps.
Ca C/2 + MgO . SO3 -+- 2 H*O = Mg CP -+■ (CaO - SO* -+- 2 IP O). Ca C / 2 + MgO. SO 3 - + - 2 H * O = Mg CP - + ■ (CaO - SO * - + - 2 IP O).
Da die Laugen in möglichst gleicher Concentration zusammengemischt werden, eine Verdünnung der einen durch die andere also nicht stattfinden kann, so ist die Lösungsfähigkeit des Gemisches für schwefelsaures Calcium eine sehr geringe, und der Gehalt der vollständig erkalteten Laugen an Schwefelsäureverbindungen ein minimaler.Since the alkalis are mixed together in the same concentration as possible, a dilution the one cannot take place through the other, then the ability to solve is the Mixture for calcium sulphate is very low, and the content of the completely cooled Alkalis to sulfuric acid compounds a minimal.
Der Haupttheil der erhaltenen Lösung von Calciumoxychlorid wird nun mit einer entsprechenden Menge der gereinigten Chlormagnesiumlauge versetzt und mit Wasser verdünnt, wobei sich Mg O · H~ O ausscheidet.The main part of the calcium oxychloride solution obtained is then mixed with an appropriate amount of the purified magnesium chloride solution and diluted with water, whereupon Mg O · H ~ O separates out.
Läfst man jedoch die Calciumoxychloridlösung für sich erkalten, so krystallisirt reines Calciumoxychlorid (3 Ca O - Ca CP -f- 16 IP O) aus, das mit verdünnter, gereinigter Chlormagnesiumlauge ebenfalls Magnesia ausscheidet.If, however, the calcium oxychloride solution is allowed to cool for itself, pure calcium oxychloride (3 Ca O - Ca CP -f- 16 IP O) crystallizes out, which with dilute, purified chloromagnesium liquor also precipitates magnesia.
In beiden Fällen erhält man eine von Thon und Eisenverbindungen fast völlig freie Magnesia.In both cases, magnesia is obtained which is almost completely free of clay and iron compounds.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE20277C true DE20277C (en) |
Family
ID=297038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT20277D Active DE20277C (en) | Process for the preparation of calcium oxychloride for the purification of lime and for the application of calcium oxychloride for the production of magnesium oxide hydrate from chloromagnesium solution |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE20277C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3415617A (en) * | 1966-02-02 | 1968-12-10 | Dow Chemical Co | Method of separating magnesium and calcium values from calcium and magnesium carbonates |
| US4272070A (en) * | 1979-12-28 | 1981-06-09 | Body Design, Incorporated | Combination wall mounted dance barre and exercise rod |
-
0
- DE DENDAT20277D patent/DE20277C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3415617A (en) * | 1966-02-02 | 1968-12-10 | Dow Chemical Co | Method of separating magnesium and calcium values from calcium and magnesium carbonates |
| US4272070A (en) * | 1979-12-28 | 1981-06-09 | Body Design, Incorporated | Combination wall mounted dance barre and exercise rod |
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