GB2235685B - A process for the production of sodium dichromate - Google Patents

A process for the production of sodium dichromate

Info

Publication number
GB2235685B
GB2235685B GB9019233A GB9019233A GB2235685B GB 2235685 B GB2235685 B GB 2235685B GB 9019233 A GB9019233 A GB 9019233A GB 9019233 A GB9019233 A GB 9019233A GB 2235685 B GB2235685 B GB 2235685B
Authority
GB
United Kingdom
Prior art keywords
production
sodium dichromate
dichromate
sodium
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 - Fee Related
Application number
GB9019233A
Other versions
GB2235685A (en
GB9019233D0 (en
Inventor
Gunter Hofmann
Reiner Schmitz
Wolfgang Wohlk
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of GB9019233D0 publication Critical patent/GB9019233D0/en
Publication of GB2235685A publication Critical patent/GB2235685A/en
Application granted granted Critical
Publication of GB2235685B publication Critical patent/GB2235685B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0018—Evaporation of components of the mixture to be separated
    • B01D9/0022—Evaporation of components of the mixture to be separated by reducing pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/004—Fractional crystallisation; Fractionating or rectifying columns
GB9019233A 1989-09-05 1990-09-04 A process for the production of sodium dichromate Expired - Fee Related GB2235685B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3929828A DE3929828C2 (en) 1989-09-05 1989-09-05 Process for the production of sodium dichromate

Publications (3)

Publication Number Publication Date
GB9019233D0 GB9019233D0 (en) 1990-10-17
GB2235685A GB2235685A (en) 1991-03-13
GB2235685B true GB2235685B (en) 1993-03-17

Family

ID=6388873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9019233A Expired - Fee Related GB2235685B (en) 1989-09-05 1990-09-04 A process for the production of sodium dichromate

Country Status (2)

Country Link
DE (1) DE3929828C2 (en)
GB (1) GB2235685B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9416056U1 (en) 1994-10-06 1994-11-24 Stocko Metallwarenfab Henkels Lockable blade receptacle for an electrical connection
WO2009077346A1 (en) * 2007-12-14 2009-06-25 Gea Messo Gmbh Method and device for producing a coarse-grained ammonium sulfate product crystallisate
DE102009017097B4 (en) * 2009-04-15 2016-06-16 Air Liquide Global E&C Solutions Germany Gmbh Process for the continuous treatment of a salt-containing solution
CN115159738A (en) * 2022-08-19 2022-10-11 山东五维阻燃科技股份有限公司 Method for separating and purifying zinc borate production wastewater by using phase diagram

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093338B (en) * 1958-05-05 1960-11-24 Diamond Alkali Co Process for the preparation of substantially sulfate-free alkali dichromates
DE1173884B (en) * 1960-04-28 1964-07-16 Diamond Alkali Co Process for the preparation of substantially sulfate-free alkali dichromates
DE1205508B (en) * 1962-05-17 1965-11-25 Bayer Ag Process for the preparation of concentrated sodium dichromate solutions

Also Published As

Publication number Publication date
DE3929828A1 (en) 1991-03-14
GB2235685A (en) 1991-03-13
DE3929828C2 (en) 1997-07-31
GB9019233D0 (en) 1990-10-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000904