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GB1020592A - Improvements in stripping coatings from metal surfaces - Google Patents

Improvements in stripping coatings from metal surfaces

Info

Publication number
GB1020592A
GB1020592A GB35539/62A GB3553962A GB1020592A GB 1020592 A GB1020592 A GB 1020592A GB 35539/62 A GB35539/62 A GB 35539/62A GB 3553962 A GB3553962 A GB 3553962A GB 1020592 A GB1020592 A GB 1020592A
Authority
GB
United Kingdom
Prior art keywords
fluo
naoh
silicate
coatings
na3po4
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
GB35539/62A
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.)
Hooker Chemical Corp
Original Assignee
Hooker Chemical 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 Hooker Chemical Corp filed Critical Hooker Chemical Corp
Publication of GB1020592A publication Critical patent/GB1020592A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F5/00—Electrolytic stripping of metallic layers or coatings
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

Metal surfaces are stripped of coating materials by electrolysis using as electrolyte a molten mixture of NaOH and one or more alkali metal salts viz. alkali metal carbonate, halide, sulphate, phosphate, silicate, borate, stannate, zincate, plumbate, molybdate, fluo-silicate, titanate, zirconate, fluo-titanate, fluo-zirconate, fluoborate, or mixtures thereof. Preferred mixtures are: 85 NaOH, 5 Na3PO4, 10 KCl and 85 NaOH, 5 Na3PO4, 2-5 Na2SnO3 and 10 KOH. The molten mixture is applied at 900 DEG C. using 4-6 V. at up to 100 Amps. The current may be reversed periodically. The process is applied to de-tinning steel sheet, removing rubber and silicate coatings, paint, and anodized, and phosphate coatings. The examples are mainly concerned with stripping tin, and lead from copper.
GB35539/62A 1961-09-26 1962-09-18 Improvements in stripping coatings from metal surfaces Expired GB1020592A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US140925A US3257299A (en) 1961-09-26 1961-09-26 Composition and method for electrolytic stripping of coatings from metals

Publications (1)

Publication Number Publication Date
GB1020592A true GB1020592A (en) 1966-02-23

Family

ID=22493399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35539/62A Expired GB1020592A (en) 1961-09-26 1962-09-18 Improvements in stripping coatings from metal surfaces

Country Status (5)

Country Link
US (1) US3257299A (en)
BE (1) BE622847A (en)
DE (1) DE1421994A1 (en)
GB (1) GB1020592A (en)
NL (2) NL124986C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492210A (en) * 1967-10-16 1970-01-27 Hamilton Cosco Inc Electrolytic stripping of nonferrous metals from a ferrous metal base
US4100044A (en) * 1977-07-15 1978-07-11 The United States Of America As Represented By The Secretary Of The Air Force Procedure for removing aluminum from an Al-Al3 Ni two-phase matrix
US4246083A (en) * 1978-08-31 1981-01-20 Johnson, Matthey & Co., Limited Removal of surface material
US4287033A (en) * 1980-04-14 1981-09-01 Calspan Corporation Electrochemical method for removing metallic sheaths
US4404074A (en) * 1982-05-27 1983-09-13 Occidental Chemical Corporation Electrolytic stripping bath and process
EP1302569A3 (en) * 2001-10-11 2004-03-03 Shipley Co. L.L.C. Stripping solution
CN101611173B (en) * 2007-02-16 2011-02-16 Jx日矿日石金属株式会社 Methods of recovering valuable metal from scrap containing electrically conductive oxide
JP4210713B2 (en) * 2007-02-16 2009-01-21 日鉱金属株式会社 Method for recovering valuable metals from scrap containing conductive oxides
WO2009101864A1 (en) * 2008-02-12 2009-08-20 Nippon Mining & Metals Co., Ltd. Method of recovering valuable metals from izo scrap
JP5192000B2 (en) * 2008-02-12 2013-05-08 Ｊｘ日鉱日石金属株式会社 Method for recovering valuable metals from IZO scrap
CN101981233B (en) * 2008-03-06 2013-02-13 Jx日矿日石金属株式会社 Process for recovery of valuable metals from scrap IZO

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US948681A (en) * 1908-04-16 1910-02-08 Edwin M Chance Electrolytic separation of metal.
GB419819A (en) * 1933-05-12 1934-11-12 Mond Nickel Co Ltd Improvements relating to the dissolving of metals of the platinum group
US2655473A (en) * 1948-07-20 1953-10-13 Metal & Thermit Corp Electrolytic detinning
US2738294A (en) * 1951-09-13 1956-03-13 Diamond Alkali Co Salt bath system and method for treating metals
US2936278A (en) * 1955-03-07 1960-05-10 Kolene Corp Molten salt bath apparatus for electrolytic cleaning of metals
US2920023A (en) * 1955-04-04 1960-01-05 Chrysler Corp Electrolytic cleaning of metal and composition therefor
US2826539A (en) * 1956-12-05 1958-03-11 Allegheny Ludlum Steel Method of cleaning metal strip
US2936270A (en) * 1957-11-12 1960-05-10 Kolene Corp Methods for cleaning and descaling titanium
US3096261A (en) * 1959-05-25 1963-07-02 Hooker Chemical Corp Salt bath for electrolytic cleaning of metals

Also Published As

Publication number Publication date
BE622847A (en)
DE1421994A1 (en) 1969-04-03
NL124986C (en)
US3257299A (en) 1966-06-21
NL283267A (en)

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