GB625728A - Recovery of magnesia and sulphur contained in sea-water and similar solutions - Google Patents

Recovery of magnesia and sulphur contained in sea-water and similar solutions

Info

Publication number
GB625728A
GB625728A GB33525/45A GB3352545A GB625728A GB 625728 A GB625728 A GB 625728A GB 33525/45 A GB33525/45 A GB 33525/45A GB 3352545 A GB3352545 A GB 3352545A GB 625728 A GB625728 A GB 625728A
Authority
GB
United Kingdom
Prior art keywords
magnesia
barium sulphate
recovery
similar solutions
sea
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
GB33525/45A
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.)
Rech S Et D Entpr S Ind & Chim
Original Assignee
Rech S Et D Entpr S Ind & Chim
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 Rech S Et D Entpr S Ind & Chim filed Critical Rech S Et D Entpr S Ind & Chim
Publication of GB625728A publication Critical patent/GB625728A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F5/00—Compounds of magnesium
    • C01F5/14—Magnesium hydroxide
    • C01F5/22—Magnesium hydroxide from magnesium compounds with alkali hydroxides or alkaline- earth oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/06—Preparation of sulfur; Purification from non-gaseous sulfides or materials containing such sulfides, e.g. ores
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

Sea water and similar solutions, advantageously after treatment with lime for the precipitation of magnesium hydroxide, are treated with baryta for the recovery of their sulphur content as barium sulphate. If the magnesium is not first removed, the hydroxide precipitates with the barium sulphate; the mixed precipitate is calcined for the removal of the sulphur, the soluble baryta thereupon being separated from the magnesia for re-use. Precipitation of the magnesia and barium sulphate is preferably effected in the presence of previously obtained precipitates. Specification 23642/02, [Class 1], is referred to. The Specification as open to inspection under Sect. 91 comprises also the treatment of the sea water &c., with barium carbonate, if desired, with injection of carbon dioxide, whereby a barium sulphate-calcium carbonate precipitate is obtained. This subject-matter does not appear in the Specification as accepted.
GB33525/45A 1943-02-10 1945-12-11 Recovery of magnesia and sulphur contained in sea-water and similar solutions Expired GB625728A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR625728X 1943-02-10

Publications (1)

Publication Number Publication Date
GB625728A true GB625728A (en) 1949-07-04

Family

ID=8987901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33525/45A Expired GB625728A (en) 1943-02-10 1945-12-11 Recovery of magnesia and sulphur contained in sea-water and similar solutions

Country Status (1)

Country Link
GB (1) GB625728A (en)

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