ES2063394T3 - Procedimiento para la elaboracion de dicromato sodico. - Google Patents

Procedimiento para la elaboracion de dicromato sodico.

Info

Publication number
ES2063394T3
ES2063394T3 ES91105917T ES91105917T ES2063394T3 ES 2063394 T3 ES2063394 T3 ES 2063394T3 ES 91105917 T ES91105917 T ES 91105917T ES 91105917 T ES91105917 T ES 91105917T ES 2063394 T3 ES2063394 T3 ES 2063394T3
Authority
ES
Spain
Prior art keywords
sodium
solution
monocromate
dicromate
ions
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
Application number
ES91105917T
Other languages
English (en)
Inventor
Norbert Dr Lonhoff
Bernhard Dr Spreckelmeyer
Hans-Dieter Dr Block
Rainer Dr Weber
Jost Dr Halstenberg
Bernd Rosenow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Application granted granted Critical
Publication of ES2063394T3 publication Critical patent/ES2063394T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

LA PRESENTE INVENCION SE REFIERE A UN PROCESO PARA LA OBTENCION DE SOLUCION DE DICROMATO DE SODIO A TRAVES DE LA FABRICACION POR VIA ALCALINA OXIDANTE A PARTIR DE MINERAL DE CROMO, LIXIVIACION DE LOS CLINKERS O LADRILLOS REFRACTARIOS CON AGUA O SOLUCION ACUOSA CONTENIENDO CROMATO, AJUSTE DEL VALOR PH ENTRE 7 Y 9,5, SEPARACION DE LAS PARTICULAS INSOLUBLES A TRAVES DE FILTRACION DONDE SE CONTIENE UNA SOLUCION DE MONOCROMATO SODICO, TRASMUTACION DE LOS IONES MONOCROMATO DE ESTA SOLUCION EN IONES DICROMATO A TRAVES DE ACIDIFICACION Y CRISTALIZACION DEL DICROMATO DE SODIO POR MEDIO DE LA LIMITACION DE ESTA SOLUCION DE DONDE DE ACUERDO CON LAS CARACTERISTICAS LA ACIDIFICACION CON DIOXIDO DE CARBONO SE CONSIGUE BAJO PRESION Y SEPARACION DEL CARBONATO HIDROGENADO DE SODIO. A CONTINUACION LA SOLUCION QUE PERMANECE SE LIBERA A TRAVES DE ENFRIAMIENTO A UNA TEMPERATURA POR DEBAJO DE 10 C Y FILTRACION POSTERIOR DEL MONOCROMATO DE SODIO. EN LA SOLUCION QUE PERMANECE LOS AUN PRESENTES IONES DE MONOCROMATOEN ALGUNOS CASOS SE TRANSFORMAN POR AÑADIDURA DE UN ACIDO EN IONES DICROMATO Y EL MONOCROMATO DE SODIO FILTRADO DE LA SOLUCION DE MONOCROMATO DE SODIO SE AÑADE EN UNA SOLUCION DE DICROMATO DE SODIO DE LA TRASMUTACION CON DIOXIDO DE CARBONO.
ES91105917T 1990-04-26 1991-04-13 Procedimiento para la elaboracion de dicromato sodico. Expired - Lifetime ES2063394T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4013335A DE4013335A1 (de) 1990-04-26 1990-04-26 Verfahren zur herstellung von natriumdichtromat

Publications (1)

Publication Number Publication Date
ES2063394T3 true ES2063394T3 (es) 1995-01-01

Family

ID=6405152

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91105917T Expired - Lifetime ES2063394T3 (es) 1990-04-26 1991-04-13 Procedimiento para la elaboracion de dicromato sodico.

Country Status (11)

Country Link
EP (1) EP0453913B1 (es)
JP (1) JP3262127B2 (es)
BR (1) BR9101664A (es)
CA (1) CA2041005A1 (es)
DE (2) DE4013335A1 (es)
ES (1) ES2063394T3 (es)
PL (1) PL165627B1 (es)
RO (1) RO110459B1 (es)
RU (1) RU2008262C1 (es)
TR (1) TR25954A (es)
ZA (1) ZA913113B (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10217206A1 (de) * 2002-04-18 2003-11-06 Bayer Ag Verfahren zur Verwertung von Vanadium aus Chromerz als Vanadium-V-oxid
CN102649585B (zh) * 2011-08-22 2014-05-14 四川省银河化学股份有限公司 一种红矾钠的制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE379410C (de) * 1921-04-14 1923-08-22 Griesheim Elektron Chem Fab Verfahren zur Herstellung von Natriumbichromat aus Natriumchromat mittels Kohlensaeure
FR1223186A (fr) * 1958-05-05 1960-06-15 Diamond Alkali Co Procédé de purification de liqueurs de chromates et bichromates
RO64038A2 (fr) * 1972-12-01 1978-07-15 Inst De Chime Procede pour conversion du chromate de sodium en bichromate de sodium
US3933972A (en) * 1974-02-11 1976-01-20 Products Chimiques Ugine Kuhlmann Process for preparing pure sodium bichromate
DE3837266A1 (de) * 1988-11-03 1990-05-10 Bayer Ag Verfahren zur herstellung von natriumdichromat

Also Published As

Publication number Publication date
ZA913113B (en) 1992-02-26
BR9101664A (pt) 1991-12-10
PL290011A1 (en) 1992-01-13
DE4013335A1 (de) 1991-10-31
EP0453913A2 (de) 1991-10-30
CA2041005A1 (en) 1991-10-27
RO110459B1 (ro) 1996-01-30
DE59103520D1 (de) 1994-12-22
JPH04228432A (ja) 1992-08-18
TR25954A (tr) 1993-11-01
EP0453913A3 (en) 1992-05-20
PL165627B1 (pl) 1995-01-31
JP3262127B2 (ja) 2002-03-04
RU2008262C1 (ru) 1994-02-28
EP0453913B1 (de) 1994-11-17

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