GB681622A - Method for refining lead, tin and alloys thereof - Google Patents

Method for refining lead, tin and alloys thereof

Info

Publication number
GB681622A
GB681622A GB8814/50A GB881450A GB681622A GB 681622 A GB681622 A GB 681622A GB 8814/50 A GB8814/50 A GB 8814/50A GB 881450 A GB881450 A GB 881450A GB 681622 A GB681622 A GB 681622A
Authority
GB
United Kingdom
Prior art keywords
alloys
impurities
metal
added
refining
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
GB8814/50A
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.)
Meyer Metallurgical Corp
Original Assignee
Meyer Metallurgical Corp
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 Meyer Metallurgical Corp filed Critical Meyer Metallurgical Corp
Publication of GB681622A publication Critical patent/GB681622A/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
    • C22B13/00—Obtaining lead
    • C22B13/06—Refining
    • 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)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A method for the collective removal of impurities, particularly Cu, As, Ni, Fe and bound S, from contaminated Pb or Sn or alloys of these metals is characterized by addition of a quantity of a mixture of alkali hydroxide and S to the molten metal or alloy with energetic stirring and without removal of the dross formed on melting, the quantity of reagent added being less than that stoichiometrically equivalent to the amount of impurities. A mush is produced on the molten metal bath which consists of impurities and adhering metal. Energetic stirring is continued and a carbonaceous drying agent is added until adhering metal is separated from the mush which is transformed into a dry residue and removed from the bath. The refining agent, which preferably contains 3 to 5 parts of alkali hydroxide to 1 part of S, may be added in a proportion of 0.1 to 1 per cent by weight of the impure metal or alloy charge. Examples are given of the refining of Pb-Sn-Sb alloys.
GB8814/50A 1949-04-12 1950-04-11 Method for refining lead, tin and alloys thereof Expired GB681622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US681622XA 1949-04-12 1949-04-12

Publications (1)

Publication Number Publication Date
GB681622A true GB681622A (en) 1952-10-29

Family

ID=22080798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8814/50A Expired GB681622A (en) 1949-04-12 1950-04-11 Method for refining lead, tin and alloys thereof

Country Status (1)

Country Link
GB (1) GB681622A (en)

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