DE67780C - Manufacture of potassium carbonate from potassium sulfate. (2 - Google Patents
Manufacture of potassium carbonate from potassium sulfate. (2Info
- Publication number
- DE67780C DE67780C DENDAT67780D DE67780DA DE67780C DE 67780 C DE67780 C DE 67780C DE NDAT67780 D DENDAT67780 D DE NDAT67780D DE 67780D A DE67780D A DE 67780DA DE 67780 C DE67780 C DE 67780C
- Authority
- DE
- Germany
- Prior art keywords
- potassium
- carbonate
- lime
- residues
- manufacture
- 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 - Lifetime
Links
- OTYBMLCTZGSZBG-UHFFFAOYSA-L Potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 title claims description 10
- 229910052939 potassium sulfate Inorganic materials 0.000 title claims description 10
- 235000011151 potassium sulphates Nutrition 0.000 title claims description 10
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 title claims description 8
- 239000001184 potassium carbonate Substances 0.000 title claims description 4
- 229910000027 potassium carbonate Inorganic materials 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L Chromic acid Chemical compound O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 8
- KMUONIBRACKNSN-UHFFFAOYSA-N Potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 8
- 238000002386 leaching Methods 0.000 claims description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 235000015450 Tilia cordata Nutrition 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 229940069002 Potassium Dichromate Drugs 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- RFAFBXGYHBOUMV-UHFFFAOYSA-N Calcium chromate Chemical compound [Ca+2].[O-][Cr]([O-])(=O)=O RFAFBXGYHBOUMV-UHFFFAOYSA-N 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229960003563 Calcium Carbonate Drugs 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 230000003993 interaction Effects 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 claims 2
- 239000001120 potassium sulphate Substances 0.000 claims 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000006011 modification reaction Methods 0.000 claims 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- XMXNVYPJWBTAHN-UHFFFAOYSA-N Potassium chromate Chemical compound [K+].[K+].[O-][Cr]([O-])(=O)=O XMXNVYPJWBTAHN-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910000099 calcium monohydride Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000029087 digestion Effects 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
- 230000003472 neutralizing Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Das in dem Haupt-Patent Nr. 66533 beschriebene Verfahren zur Darstellung von Kaliumcarbonat aus Kaliumsulfat kann man zweckmä'fsig gleichzeitig mit der Verwerthung der kalk- und calciu'mchromathaltigen Rückstände verbinden, welche sich bei dem Aufschliefsen von Chromerzen mit Alkalicarbonat und Calciumcarbonat oder -hydroxyd und darauf folgendem Auslaugen der Schmelze ergeben. Dies kann in der Weise geschehen, dafs man zur Neutralisation der aus Kaliumsulfat und Kaliumbichromat bestehenden Lösung jene Rückstände in fein vertheiltem Zustande verwendet. Die Vortheile, welche man hierdurch erreicht, sind zweifacher Natur. Einerseits sind in den Auslaugerückständen, welche sich beim Aufschliefsen der Chromerze durch die genannten Agentien ergeben, stets noch 3 bis 4 pCt. chromsaurer Kalk vorhanden, welcher sonst in den Rückständen verbleiben und verloren gehen würde. Bei der Benutzung dieser Rückstände zur Neutralisation der kaliumsulfat- und kaliumbichromathaltigen Lösung hingegen findet eine Wechselwirkung zwischen dem Kaliumsulfat und dem Calciumchromat statt, wobei Chromsäure und Schwefelsäure ihre Stelle vertauschen. Auf diese Weise werden die letzten Reste von Chromsäure, welche η den Auslaugerückständen noch vorhanden sind, wiedergewonnen.The method for the preparation of Potassium carbonate from potassium sulfate can expediently be used at the same time as the utilization the lime- and calcium-chromate-containing residues which combine during the digestion process of chrome ores with alkali carbonate and calcium carbonate or hydroxide and subsequent leaching of the melt. This can be done by neutralizing the potassium sulfate and potassium dichromate, those residues in a finely divided state used. The advantages obtained thereby are twofold. On the one hand are in the leaching residues, which are caused by the disintegration of the chrome ores the mentioned agents always yield 3 to 4 pCt. chromic acid lime present, which would otherwise remain in the residue and be lost. When using these residues to neutralize the solution containing potassium sulfate and potassium dichromate however, there is an interaction between the potassium sulfate and the calcium chromate instead, with chromic acid and sulfuric acid exchanging their place. Be that way the last residues of chromic acid, which η the leaching residues are still present are recovered.
Der zweite für die Praxis wesentliche Vortheil, welcher sich aus der Benutzung der erwähnten Auslaugerückstände ergiebt, ist in der erheblichen Ersparnifs an Kalk zu erblicken, da die Auslagerückstände durchschnittlich 7OpCt. Kalk enthalten und bei einem einigermafsen umfangreichen Betriebe der ganze Kalkbedarf oder doch der gröfste Theil desselben, welcher für die Umsetzung des Kaliumsulfats nach dem Haupt-Patent erforderlich ist, durch diese Rückstände gedeckt werden kann.The second advantage which is essential in practice and which results from the use of the above-mentioned Leach residues can be seen in the considerable savings in lime, since the aging residues on average 7OpCt. Contain lime and, in a fairly extensive farm, the entire lime requirement or at least the greater part of it, which is used for the conversion of the potassium sulfate after the Main patent is required by which these arrears can be covered.
Bei der Ausführung des im Vorstehenden gekennzeichneten Verfahrens wird in folgender Weise vorgegangen:When carrying out the procedure identified above, the following Wise proceeded:
Die Äuslaugerückstände werden, so weit sie nicht schon durch den Auslaugeprocefs selbst in Schlamm verwandelt sind, durch beliebige Vorrichtungen zerkleinert und der Lösung von äquivalenten Theilen Kaliumsulfat und Kaliumbichromat zugesetzt. Die Reaction verläuft hierbei nach folgender Gleichung:The leaching residues are, as far as they are not already caused by the leaching process itself are transformed into sludge, crushed by any device and the solution of equivalent parts of potassium sulfate and potassium dichromate were added. The reaction proceeds here according to the following equation:
(1 + x) K2SO4 + K2Cr2O7+ CaH2 O2 (1 + x) K 2 SO 4 + K 2 Cr 2 O 7 + CaH 2 O 2
+ χ Ca Cr O4 = (2 + χ) K2 Cr O4 + χ Ca Cr O 4 = (2 + χ) K 2 Cr O 4
+ (ι +x) CaSO^H2O. + (ι + x) CaSO ^ H 2 O.
Der entstehende Niederschlag von Calciumsulfat wird zusammen mit den Beimengungen von Kieselsäure, Eisenoxyd und Thonerde, welche den Auslaugerückständen beigemengt waren, als Niederschlag abgeschieden und von der Lösung getrennt. Die auf diese Weise sich ergebende Kaliumchromatlauge wird alsdann nach dem Verfahren des Haupt-PatentesThe resulting precipitate of calcium sulfate is used together with the admixtures of silica, iron oxide and alumina, which are added to the leaching residues were deposited as a precipitate and separated from the solution. That way The resulting potassium chromate liquor is then processed according to the method of the main patent
durch Behandlung mit Kohlensäure auf Kaliumcarbonat weiter verarbeitet.further processed by treatment with carbonic acid on potassium carbonate.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE67780C true DE67780C (en) |
Family
ID=341380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT67780D Expired - Lifetime DE67780C (en) | Manufacture of potassium carbonate from potassium sulfate. (2 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE67780C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1274529B (en) * | 1964-01-16 | 1968-08-01 | Carl Kuhbier | Heavy duty side cutter |
-
0
- DE DENDAT67780D patent/DE67780C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1274529B (en) * | 1964-01-16 | 1968-08-01 | Carl Kuhbier | Heavy duty side cutter |
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