MX173095B - Procedimiento para la obtencion de dicromato sodico - Google Patents
Procedimiento para la obtencion de dicromato sodicoInfo
- Publication number
- MX173095B MX173095B MX018066A MX1806689A MX173095B MX 173095 B MX173095 B MX 173095B MX 018066 A MX018066 A MX 018066A MX 1806689 A MX1806689 A MX 1806689A MX 173095 B MX173095 B MX 173095B
- Authority
- MX
- Mexico
- Prior art keywords
- solution
- ions
- dichromate
- sodium
- obtaining
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/28—Per-compounds
-
- 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)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
La presente invención serefiere a procedimiento para la obtención de dicromato sódico y de soluciones de dicromato sódico mediante digestión alcalina oxidante de minerales de cromo, el procedimiento está caracterizado porque la solución de monocromato sódico se consentra por evaporación, antes de la transformación en una solución de dicromato sódico, a contenidos de 700 a 1000 g/litro de Na2CrO4, se transforman a continuación los iones monocromato en un 75 a un 95 por ciento en iones dicromato, la solución se libera a continuación, mediante refrigeración hasta una temperatura situada por debajo de 0gradosC y filtración, en una gran proporción de sulfato sódico y en la solución remanente se transforman los iones monocromato residuales mediante electrolisis y/o mediante reacción con ácido crómico y/o reacción con dióxido de carbono en caso dado tras concentración por evaporación de la solución, en iones dicromato.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3837266A DE3837266A1 (de) | 1988-11-03 | 1988-11-03 | Verfahren zur herstellung von natriumdichromat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX173095B true MX173095B (es) | 1994-02-01 |
Family
ID=6366363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX018066A MX173095B (es) | 1988-11-03 | 1989-10-23 | Procedimiento para la obtencion de dicromato sodico |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0368066B1 (es) |
| JP (1) | JP2806996B2 (es) |
| AR (1) | AR242545A1 (es) |
| BR (1) | BR8905627A (es) |
| DE (2) | DE3837266A1 (es) |
| ES (1) | ES2034555T3 (es) |
| MX (1) | MX173095B (es) |
| TR (1) | TR25335A (es) |
| ZA (1) | ZA898345B (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4013335A1 (de) * | 1990-04-26 | 1991-10-31 | Bayer Ag | Verfahren zur herstellung von natriumdichtromat |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE113086C (es) * | 1898-02-24 | |||
| DE1093338B (de) * | 1958-05-05 | 1960-11-24 | Diamond Alkali Co | Verfahren zur Herstellung von im wesentlichen sulfatfreien Alkalibichromaten |
| DE1173884B (de) * | 1960-04-28 | 1964-07-16 | Diamond Alkali Co | Verfahren zur Herstellung von im wesentlichen sulfatfreien Alkalibichromaten |
| DE1205508B (de) * | 1962-05-17 | 1965-11-25 | Bayer Ag | Verfahren zur Herstellung von konzentrierten Natriumbichromatloesungen |
| EP0047799A1 (en) * | 1980-09-16 | 1982-03-24 | Allied Corporation | Improved method for production of alkali metal chromates from chrome ores |
-
1988
- 1988-11-03 DE DE3837266A patent/DE3837266A1/de not_active Withdrawn
-
1989
- 1989-10-21 EP EP89119582A patent/EP0368066B1/de not_active Expired - Lifetime
- 1989-10-21 ES ES198989119582T patent/ES2034555T3/es not_active Expired - Lifetime
- 1989-10-21 DE DE8989119582T patent/DE58902081D1/de not_active Expired - Lifetime
- 1989-10-23 MX MX018066A patent/MX173095B/es unknown
- 1989-10-23 TR TR89/0867A patent/TR25335A/xx unknown
- 1989-10-31 AR AR89315325A patent/AR242545A1/es active
- 1989-11-01 BR BR898905627A patent/BR8905627A/pt not_active Application Discontinuation
- 1989-11-02 ZA ZA898345A patent/ZA898345B/xx unknown
- 1989-11-02 JP JP1287303A patent/JP2806996B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2806996B2 (ja) | 1998-09-30 |
| JPH02167828A (ja) | 1990-06-28 |
| TR25335A (tr) | 1993-01-06 |
| BR8905627A (pt) | 1990-06-05 |
| EP0368066A1 (de) | 1990-05-16 |
| AR242545A1 (es) | 1993-04-30 |
| EP0368066B1 (de) | 1992-08-19 |
| DE3837266A1 (de) | 1990-05-10 |
| DE58902081D1 (de) | 1992-09-24 |
| ZA898345B (en) | 1990-07-25 |
| ES2034555T3 (es) | 1993-04-01 |
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