AT372363B - METHOD FOR THE DESULFATATION OF AQUEOUS MAGNESIUM CHLORIDE SOLUTIONS - Google Patents
METHOD FOR THE DESULFATATION OF AQUEOUS MAGNESIUM CHLORIDE SOLUTIONSInfo
- Publication number
- AT372363B AT372363B AT255582A AT255582A AT372363B AT 372363 B AT372363 B AT 372363B AT 255582 A AT255582 A AT 255582A AT 255582 A AT255582 A AT 255582A AT 372363 B AT372363 B AT 372363B
- Authority
- AT
- Austria
- Prior art keywords
- desulfatation
- magnesium chloride
- chloride solutions
- aqueous magnesium
- decantate
- Prior art date
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
- C01F5/26—Magnesium halides
- C01F5/30—Chlorides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Description
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EMI1.1
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freie Dekantat wurde mit einer Strömungsmenge von zirka 1 m3/h kontinuierlich abgezogen ; auch das Sediment wurde mit einer gleichbleibenden Menge von zirka 0, 5 m3/h ständig abgepumpt und auf einem Bandfilter mit einer spezifischen Filtrationsleistung von 1, 5 bis 2 m/h in ein klares Filtrat und einen Filterkuchen getrennt, der zirka 50 Gew.-% Wasser enthielt und mit etwa 93 kg/h anfiel. Aushärtungserscheinungen wurden weder beim Sediment, noch beim Filterkuchen wahrgenommen, der mittels Zentrifugalpumpe ohne Schwierigkeiten in das Sammelgefäss befördert werden konnte.
Bei diesem konkreten Beispiel wurde auf eine Filterkuchenwäsche verzichtet ; die Filtrierleistung betrüge ebenfalls zirka 1, 5 bis 2 m/h, hier bezogen auf den Waschwasserstrom durch die Filterfläche.
PATENTANSPRÜCHE :
1. Verfahren zum Entsulfatisieren wässeriger Magnesiumchloridlösungen durch Fällung und Abtrennen des Sulfats als Calciumsulfat, dadurch gekennzeichnet, dass die Lösung auf einer Temperatur zwischen 30 und 60 C gehalten sowie die benötigten Calciumionen in mindestens stöchiometrischer Menge unter ständigem Rühren entweder als festes Calciumchlorid oder als wässerige,
EMI2.1
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EMI1.1
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free decantate was continuously withdrawn at a flow rate of approximately 1 m3 / h; the sediment was also continuously pumped out with a constant amount of about 0.5 m3 / h and separated into a clear filtrate and a filter cake on a belt filter with a specific filtration capacity of 1.5 to 2 m / h. % Water and was obtained at about 93 kg / h. Signs of hardening were not noticed either in the sediment or in the filter cake, which could be easily transported into the collecting vessel by means of a centrifugal pump.
In this specific example, filter cake washing was dispensed with; the filtration rate would also be about 1.5 to 2 m / h, here based on the wash water flow through the filter surface.
PATENT CLAIMS:
1. A process for desulfating aqueous magnesium chloride solutions by precipitation and separation of the sulfate as calcium sulfate, characterized in that the solution is kept at a temperature between 30 and 60 C and the required calcium ions in at least stoichiometric amount with constant stirring either as solid calcium chloride or as aqueous,
EMI2.1
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT255582A AT372363B (en) | 1982-07-01 | 1982-07-01 | METHOD FOR THE DESULFATATION OF AQUEOUS MAGNESIUM CHLORIDE SOLUTIONS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT255582A AT372363B (en) | 1982-07-01 | 1982-07-01 | METHOD FOR THE DESULFATATION OF AQUEOUS MAGNESIUM CHLORIDE SOLUTIONS |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA255582A ATA255582A (en) | 1983-02-15 |
AT372363B true AT372363B (en) | 1983-09-26 |
Family
ID=3536373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT255582A AT372363B (en) | 1982-07-01 | 1982-07-01 | METHOD FOR THE DESULFATATION OF AQUEOUS MAGNESIUM CHLORIDE SOLUTIONS |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT372363B (en) |
-
1982
- 1982-07-01 AT AT255582A patent/AT372363B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATA255582A (en) | 1983-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |