GB157860A - Improvements in the manufacture of zinc white - Google Patents

Improvements in the manufacture of zinc white

Info

Publication number
GB157860A
GB157860A GB1588/21A GB158821A GB157860A GB 157860 A GB157860 A GB 157860A GB 1588/21 A GB1588/21 A GB 1588/21A GB 158821 A GB158821 A GB 158821A GB 157860 A GB157860 A GB 157860A
Authority
GB
United Kingdom
Prior art keywords
zinc
carbonate
oxide
acid
solution
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
GB1588/21A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB157860A publication Critical patent/GB157860A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G9/00—Compounds of zinc
    • C01G9/08—Sulfides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

Zinc sulphide is prepared by a wet process from granular zinc carbonate or zinc oxide obtained therefrom by treatment with caustic soda or potash. The granular zinc carbonate is obtained by passing carbon dioxide into a solution of a zinc salt, in the presence of magnesia or magnesium carbonate. Excess of the zinc oxide or carbonate is suspended in a dilute solution of a zinc salt or in a dilute solution of an acid such as hydrochloric acid; in the latter case a portion of the oxide or carbonate is dissolved. On passing sulphuretted hydrogen, zinc sulphide is precipitated, and the acid which is simultaneously liberated prevents the formation of oxysulphides or polysulphides. The Specification as open to inspection under Sect. 91 (3) (a) also contains the following subject-matter:-Magnesia and hydrochloric acid are recovered from the magnesium chloride resulting when the zinc carbonate is precipitated from zinc chloride solution. The basic carbonate is precipitated by the addition of magnesia to the magnesium chloride and is calcined after filtration. Zinc oxide may be obtained by calcination of the granular zinc carbonate; zinc sulphide may also be prepared by precipitation from a solution of the granular zinc carbonate or oxide in acetic acid or in dilute mineral acid. This subject-matter does not appear in the Specification as accepted.
GB1588/21A 1919-11-15 1921-01-10 Improvements in the manufacture of zinc white Expired GB157860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR157860X 1919-11-15

Publications (1)

Publication Number Publication Date
GB157860A true GB157860A (en) 1922-05-10

Family

ID=8876333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1588/21A Expired GB157860A (en) 1919-11-15 1921-01-10 Improvements in the manufacture of zinc white

Country Status (1)

Country Link
GB (1) GB157860A (en)

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