DE24694C - Innovations in the production of the acidic chromic acid potassium - Google Patents
Innovations in the production of the acidic chromic acid potassiumInfo
- Publication number
- DE24694C DE24694C DENDAT24694D DE24694DA DE24694C DE 24694 C DE24694 C DE 24694C DE NDAT24694 D DENDAT24694 D DE NDAT24694D DE 24694D A DE24694D A DE 24694DA DE 24694 C DE24694 C DE 24694C
- Authority
- DE
- Germany
- Prior art keywords
- chromic acid
- production
- innovations
- acid potassium
- potassium
- 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
- IDNWIFWIPMFSNV-UHFFFAOYSA-L [K].[Cr](=O)(=O)(O)O Chemical compound [K].[Cr](=O)(=O)(O)O IDNWIFWIPMFSNV-UHFFFAOYSA-L 0.000 title description 4
- 230000002378 acidificating Effects 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 title description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 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 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- PXLIDIMHPNPGMH-UHFFFAOYSA-N Sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 claims description 3
- 229940069002 Potassium Dichromate Drugs 0.000 claims description 2
- XMXNVYPJWBTAHN-UHFFFAOYSA-N Potassium chromate Chemical compound [K+].[K+].[O-][Cr]([O-])(=O)=O XMXNVYPJWBTAHN-UHFFFAOYSA-N 0.000 claims 1
- 239000003513 alkali Substances 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 159000000001 potassium salts Chemical class 0.000 description 4
- 229940072033 potash Drugs 0.000 description 3
- 235000015320 potassium carbonate Nutrition 0.000 description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000003112 potassium compounds Chemical class 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 150000003388 sodium compounds Chemical class 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- PANBYUAFMMOFOV-UHFFFAOYSA-N sodium;sulfuric acid Chemical compound [Na].OS(O)(=O)=O PANBYUAFMMOFOV-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/14—Chromates; Bichromates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMTAiPATENT OFFICEi
Bei dem bis jetzt üblichen Verfahren zur Herstellung des sauren chromsauren Kaliums wurden nur Kaliumsalze in Verwendung gebracht, und sucht vorliegende Erfindung das Verfahren in der Weise zu verbessern, dafs statt der theuren Kaliumsalze theilweise Natriumsalze zur Verwendung gelangen, und zwar sowohl zum Schmelzen, als auch- zum Auslaugen, so dafs dadurch der Verbrauch der theuren Kaliumsalze auf die Hälfte reducirt wird.In the process for the production of the acidic chromic acid potassium which has been customary up to now only potassium salts were brought into use, and the present invention seeks that To improve the process in such a way that instead of the expensive potassium salts some sodium salts come to use, both for melting and leaching, see above that thereby the consumption of the expensive potassium salts is reduced by half.
Das im speciellen angewendete Verfahren ist folgendes:The procedure used in the particular is as follows:
Fein gemahlenes Chromerz wird mit Kalk, Potasche und Soda in geeigneten Verhältnissen gemischt und in Flammöfen oxydirt, bis kein Chromerz mehr vorhanden ist.Finely ground chrome ore is mixed with lime, potash and soda in suitable proportions mixed and oxidized in a furnace until there is no more chrome ore.
Als vortheilhafte Mischungsverhältnisse haben sich folgende herausgestellt:
100 Theile Erz,
150 - Kalk,
40 - Potasche,
30 - Soda,The following have proven to be advantageous mixing ratios:
100 parts of ore,
150 - lime,
40 - potash,
30 - soda,
die übrigens nach dem jeweiligen Gehalt des Erzes an Chromoxyd geändert werden können.which, by the way, can be changed according to the chromium oxide content of the ore.
Durch Auslaugen der Schmelze, wobei man einen Zusatz von löslichen Kaliumsalzen, falls es erforderlich ist, macht, erhält man Laugen, die chromsaures Natrium und chromsaures Kalium enthalten und welche durch Eindampfen auf 30 bis 400 B. gebracht werden.By leaching the melt, to make an addition of soluble potassium salts, if required, is obtained liquors containing sodium chromate, and potassium dichromate and which are brought by evaporation to 30 to 40 0 B..
Beim Ansäuern der erkalteten Laugen mit der nach der FormelWhen acidifying the cooled lye with the formula
K2 Na2 Cr2 C8 + H2 So1 — K2 Cr2 O7
+ Na2 So1 + B2O K 2 Na 2 Cr 2 C 8 + H 2 So 1 - K 2 Cr 2 O 7
+ Na 2 So 1 + B 2 O
erforderlichen Menge Schwefel- oder Salzsäure scheidet sich saures chromsaures Kalium aus, während das schwefelsaure Natrium in Lösung bleibt.required amount of sulfuric or hydrochloric acid, acidic chromic acid potassium is precipitated, while the sodium sulphate remains in solution.
Durch Umkrystallisiren wird das saure chromsaure Kalium gereinigt.The acidic chromic acid potassium is purified by recrystallization.
Aus den das schwefelsaure Natrium enthaltenden Flüssigkeiten wird letzteres durch Eindampfen gewonnen entweder als wasserfreies Salz in der Hitze oder als wasserhaltiges beim Erkalten.The liquids containing the sodium sulfuric acid are converted into the latter by evaporation extracted either as anhydrous salt in heat or as hydrous while Cool down.
Potasche und Soda können durch alle löslichen Kalium- und Natriumverbindungen bei dem Verfahren ersetzt werden.Potash and soda can all contribute to soluble potassium and sodium compounds to be replaced in the process.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE24694C true DE24694C (en) |
Family
ID=301177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT24694D Active DE24694C (en) | Innovations in the production of the acidic chromic acid potassium |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE24694C (en) |
-
0
- DE DENDAT24694D patent/DE24694C/en active Active
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