GB414497A - Improvements in or relating to the manufacture of caustic alkalis - Google Patents

Improvements in or relating to the manufacture of caustic alkalis

Info

Publication number
GB414497A
GB414497A GB17158/33A GB1715833A GB414497A GB 414497 A GB414497 A GB 414497A GB 17158/33 A GB17158/33 A GB 17158/33A GB 1715833 A GB1715833 A GB 1715833A GB 414497 A GB414497 A GB 414497A
Authority
GB
United Kingdom
Prior art keywords
lime
liquor
reaction
produced
manufacture
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
Application number
GB17158/33A
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.)
Mathieson Alkali Works Inc
Original Assignee
Mathieson Alkali Works Inc
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 Mathieson Alkali Works Inc filed Critical Mathieson Alkali Works Inc
Publication of GB414497A publication Critical patent/GB414497A/en
Expired 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
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/20—Preparation by reacting oxides or hydroxides with alkali metal salts
    • C01D1/22—Preparation by reacting oxides or hydroxides with alkali metal salts with carbonates or bicarbonates

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)

Abstract

In the manufacture of aqueous alkali hydroxide solutions by the reaction of an alkali metal carbonate with lime in the presence of water, a liquor free from iron and aluminium is obtained by adding a purifying reagent, selected from the group consisting of the oxides, hydroxides and water soluble salts of magnesium, barium or strontium, to the liquor prior to the separation of the precipitated calcium carbonate. The calcium carbonate sludge produced is thereafter separated from the caustic liquor. The reagent may be added to the lime, to the sodium carbonate or sodium carbonate liquor, to the reaction vessel during the reaction or to the reaction vessel after the reaction, but prior to the separation of the sludge. The process may be effected by using a lime produced by calcining dolomitic limestone or a mixture of lime with dolomitic lime. A magnesium compound may be supplied in solution, in suspension or in solid form. Aqueous sodium or potassium hydroxides may be produced by the process. Specification 178,896, [Class 1 (ii)], is referred to.
GB17158/33A 1932-07-13 1933-06-15 Improvements in or relating to the manufacture of caustic alkalis Expired GB414497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US414497XA 1932-07-13 1932-07-13

Publications (1)

Publication Number Publication Date
GB414497A true GB414497A (en) 1934-08-09

Family

ID=21916564

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17158/33A Expired GB414497A (en) 1932-07-13 1933-06-15 Improvements in or relating to the manufacture of caustic alkalis

Country Status (1)

Country Link
GB (1) GB414497A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575238A (en) * 1948-08-02 1951-11-13 Dow Chemical Co Treatment of caustic soda cell liquor
DE944066C (en) * 1952-03-20 1956-08-16 Electro Chimie Metal Process for iron removal and decolorization of caustic alkali solutions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575238A (en) * 1948-08-02 1951-11-13 Dow Chemical Co Treatment of caustic soda cell liquor
DE944066C (en) * 1952-03-20 1956-08-16 Electro Chimie Metal Process for iron removal and decolorization of caustic alkali solutions

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