GB696466A - Method of and apparatus for removal of metallic iron from zinc-containing materials such as zinc dross and iron-zinc compounds - Google Patents

Method of and apparatus for removal of metallic iron from zinc-containing materials such as zinc dross and iron-zinc compounds

Info

Publication number
GB696466A
GB696466A GB243352A GB243352A GB696466A GB 696466 A GB696466 A GB 696466A GB 243352 A GB243352 A GB 243352A GB 243352 A GB243352 A GB 243352A GB 696466 A GB696466 A GB 696466A
Authority
GB
United Kingdom
Prior art keywords
zinc
container
lead
iron
temperature
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
GB243352A
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 GB696466A publication Critical patent/GB696466A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001—Dry processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/32—Refining zinc
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Coating With Molten Metal (AREA)

Abstract

696,466. Liquation; coating with zinc. HOLMBERG, T. F., and GRONBLOM, B. Jan. 29, 1952 [Sept. 26, 1951], No. 2433/52. Classes 82(i) and 82(ii) A method of removing metallic iron from zinc-containing substances comprises introducing the zinc-containing substance into a molten lead bath, maintained at a temperature such that the zinc is dissolved whilst the iron remains undissolved, removing the iron from the surface of the bath, lowering the temperature of the lead bath to that at which the zinc separates, and then removing the zinc. The initial temperature of the lead bath is over 600‹C and the final temperature is either 420‹C in which case the zinc is solid, or 440-450‹C, in which case it is liquid. The Figure shows how the process may be used to recover the zinc from the zinc dross in a hot galvanizing process. A container 1, for a galvanizing bath consisting of a zinc layer Zn and a lead layer Pb, is heated to a temperature of 430-460‹C by a,furnace 6. A second container 2 is connected by an upper tube 3 and a lower tube 4 to the lead layer of the container 1, and is maintained at a temperature of about 700‹C by a furnace 6a. Iron plates are galvanized by dipping into the zinc layer in container 1 and the zinc dross formed sinks to the top of the lead layer from whence it is removed by scooping. The zinc dross is then placed in container 2 where the zinc dissolves in the lead and the iron floats to the surface to be removed. Thermosyphonic acton causes the zinc-containing lead to pass along the tube 3 into the container 1 where the zinc separates and passes into the upper galvanizing layer. Pure lead passes from container 1 to container 2 via the lower tube 4.
GB243352A 1951-09-26 1952-01-29 Method of and apparatus for removal of metallic iron from zinc-containing materials such as zinc dross and iron-zinc compounds Expired GB696466A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI696466X 1951-09-26

Publications (1)

Publication Number Publication Date
GB696466A true GB696466A (en) 1953-09-02

Family

ID=8556224

Family Applications (1)

Application Number Title Priority Date Filing Date
GB243352A Expired GB696466A (en) 1951-09-26 1952-01-29 Method of and apparatus for removal of metallic iron from zinc-containing materials such as zinc dross and iron-zinc compounds

Country Status (1)

Country Link
GB (1) GB696466A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1151386B (en) * 1960-07-06 1963-07-11 Brevets Metallurgiques Process for treating zinc cracker ashes containing arsenic and chloride flux
GB2201969A (en) * 1986-11-25 1988-09-14 Nat Res Dev Separating a ferro alloy by electro refining

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1151386B (en) * 1960-07-06 1963-07-11 Brevets Metallurgiques Process for treating zinc cracker ashes containing arsenic and chloride flux
GB2201969A (en) * 1986-11-25 1988-09-14 Nat Res Dev Separating a ferro alloy by electro refining
GB2201969B (en) * 1986-11-25 1990-09-19 Nat Res Dev Separating a ferro alloy

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