GB632839A - Improvements in or relating to processes and apparatus for removing lead from tin - Google Patents

Improvements in or relating to processes and apparatus for removing lead from tin

Info

Publication number
GB632839A
GB632839A GB24088/47A GB2408847A GB632839A GB 632839 A GB632839 A GB 632839A GB 24088/47 A GB24088/47 A GB 24088/47A GB 2408847 A GB2408847 A GB 2408847A GB 632839 A GB632839 A GB 632839A
Authority
GB
United Kingdom
Prior art keywords
lead
tin
bath
chloride
stannous chloride
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
GB24088/47A
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.)
American Metal Co Ltd
Original Assignee
American Metal Co Ltd
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 American Metal Co Ltd filed Critical American Metal Co Ltd
Publication of GB632839A publication Critical patent/GB632839A/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
    • C22B25/00—Obtaining tin
    • 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
    • C22B25/00—Obtaining tin
    • C22B25/08—Refining

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

632,839. Refining tin. AMERICAN METAL CO., Ltd. Sept. 1, 1947, No. 24088. Convention date, March 20, 1941. [Class 82(i)] Lead is removed as an impurity from tin by forming a dross of stannous chloride and lead chloride on a tin-lead bath, maintaining the stannous chloride in the liquid phase on the bath, drawing off the dross and distilling therefrom the stannous chloride which is returned to the bath for the formation of further dross from any lead impurity remaining. As shown, a molten bath b of tin with lead as impurity is maintained molten at a temperature of 470‹-600‹F. and has on the surface a layer d of stannous chloride and lead chloride dross, formed by the addition of stannous chloride through a funnel 15 or by the addition of chlorine gas through a pipe 17, which is removed by a dross trap 8 and conduit 9 to a retort 10. The retort is maintained at a temperature sufficient to distil off the stannous chloride which is returned by the pipe 12 to the kettle but not sufficient to distil off the lead chloride. A stirrer 7 driven by a motor 4 agitates the bath. When the lead has been removed from the bath the temperature of the retort may be raised to 1500‹F. to remove all the stannous chloride which may be smelted to obtain tin. The residue of lead chloride in the retort may be removed as and when necessary.
GB24088/47A 1941-03-20 1947-09-01 Improvements in or relating to processes and apparatus for removing lead from tin Expired GB632839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US632839XA 1941-03-20 1941-03-20

Publications (1)

Publication Number Publication Date
GB632839A true GB632839A (en) 1949-12-05

Family

ID=22048184

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24088/47A Expired GB632839A (en) 1941-03-20 1947-09-01 Improvements in or relating to processes and apparatus for removing lead from tin

Country Status (1)

Country Link
GB (1) GB632839A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101672570B (en) * 2008-09-08 2011-04-20 赵湘生 Vertical stirring vacuum furnace
CN110453080A (en) * 2019-09-11 2019-11-15 广东先导稀材股份有限公司 Method for recovering tin from sponge tin
CN112267020A (en) * 2020-09-02 2021-01-26 安徽华铂再生资源科技有限公司 Low-temperature detinning device for regenerated lead bullion and use method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101672570B (en) * 2008-09-08 2011-04-20 赵湘生 Vertical stirring vacuum furnace
CN110453080A (en) * 2019-09-11 2019-11-15 广东先导稀材股份有限公司 Method for recovering tin from sponge tin
CN112267020A (en) * 2020-09-02 2021-01-26 安徽华铂再生资源科技有限公司 Low-temperature detinning device for regenerated lead bullion and use method thereof

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