GB2337515B - Removal of fluoride impurities from soda ash - Google Patents

Removal of fluoride impurities from soda ash

Info

Publication number
GB2337515B
GB2337515B GB9909368A GB9909368A GB2337515B GB 2337515 B GB2337515 B GB 2337515B GB 9909368 A GB9909368 A GB 9909368A GB 9909368 A GB9909368 A GB 9909368A GB 2337515 B GB2337515 B GB 2337515B
Authority
GB
United Kingdom
Prior art keywords
removal
soda ash
fluoride impurities
fluoride
impurities
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
GB9909368A
Other versions
GB9909368D0 (en
GB2337515A (en
Inventor
Michael Anthony Rockandel
William Kenny
Nicholas Rolfe
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.)
Imperial Chemical Industries Ltd
Original Assignee
Brunner Mond and Co Ltd
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 Brunner Mond and Co Ltd filed Critical Brunner Mond and Co Ltd
Publication of GB9909368D0 publication Critical patent/GB9909368D0/en
Publication of GB2337515A publication Critical patent/GB2337515A/en
Application granted granted Critical
Publication of GB2337515B publication Critical patent/GB2337515B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • C01D7/22—Purification
    • 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
    • C01D7/22—Purification
    • C01D7/24—Crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
GB9909368A 1998-04-30 1999-04-26 Removal of fluoride impurities from soda ash Expired - Fee Related GB2337515B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9809232.3A GB9809232D0 (en) 1998-04-30 1998-04-30 Removal of flouride impurities from soda ash

Publications (3)

Publication Number Publication Date
GB9909368D0 GB9909368D0 (en) 1999-06-16
GB2337515A GB2337515A (en) 1999-11-24
GB2337515B true GB2337515B (en) 2001-09-26

Family

ID=10831239

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9809232.3A Ceased GB9809232D0 (en) 1998-04-30 1998-04-30 Removal of flouride impurities from soda ash
GB9909368A Expired - Fee Related GB2337515B (en) 1998-04-30 1999-04-26 Removal of fluoride impurities from soda ash

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9809232.3A Ceased GB9809232D0 (en) 1998-04-30 1998-04-30 Removal of flouride impurities from soda ash

Country Status (2)

Country Link
GB (2) GB9809232D0 (en)
ZA (1) ZA993004B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010046916A1 (en) * 2008-10-06 2010-04-29 Tata Chemicals Ltd. A method of removing fluoride impurities from trona
ES2503571T3 (en) 2010-05-04 2014-10-07 Solvay Chemicals, Inc. Removal of impurities from waste solids in the production of soda ash, sodium bicarbonate and / or other derivatives
CN104591228B (en) * 2014-12-15 2017-01-11 新疆硝石钾肥有限公司 Production method for improving quality of sodium nitrate products

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489781A (en) * 1974-06-28 1977-10-26 Ici Ltd Manufacture of soda ash
GB1502850A (en) * 1974-12-09 1978-03-01 Allied Chem Purification of sodium carbonate
WO1996022398A1 (en) * 1995-01-17 1996-07-25 Environmental Projects, Inc. Method for purification of saline minerals

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489781A (en) * 1974-06-28 1977-10-26 Ici Ltd Manufacture of soda ash
GB1502850A (en) * 1974-12-09 1978-03-01 Allied Chem Purification of sodium carbonate
WO1996022398A1 (en) * 1995-01-17 1996-07-25 Environmental Projects, Inc. Method for purification of saline minerals

Also Published As

Publication number Publication date
GB9909368D0 (en) 1999-06-16
GB2337515A (en) 1999-11-24
GB9809232D0 (en) 1998-07-01
ZA993004B (en) 1999-11-15

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Legal Events

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

Effective date: 20140426