GB1132122A - Improved removal of scale from metals - Google Patents

Improved removal of scale from metals

Info

Publication number
GB1132122A
GB1132122A GB1471866A GB1471866A GB1132122A GB 1132122 A GB1132122 A GB 1132122A GB 1471866 A GB1471866 A GB 1471866A GB 1471866 A GB1471866 A GB 1471866A GB 1132122 A GB1132122 A GB 1132122A
Authority
GB
United Kingdom
Prior art keywords
acid
iron
metals
scale
copper
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
GB1471866A
Inventor
Edward Leslie Streatfield
Alan Sidney Pearce
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.)
Houseman and Thompson Ltd
Original Assignee
Houseman and Thompson 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 Houseman and Thompson Ltd filed Critical Houseman and Thompson Ltd
Priority to GB1471866A priority Critical patent/GB1132122A/en
Publication of GB1132122A publication Critical patent/GB1132122A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

1,132,122. Cleaning metals. HOUSEMAN and THOMPSON Ltd. March 13, 1966 [April 2, 1966], No. 14718/66. Heading C7E. Copper-containing iron oxide scale is removed from metal surfaces, such as those in the interior of steam-generating equipment, by dissolving the iron oxide in an acid solution buffered to a pH between 2À5 and 5, then bringing copper into the solution by adjusting the pH to between 8 and 10À5, Na heptonate being employed to sequester the iron and prevent or reduce precipitation of iron hydroxide. Suitable buffering agents are di-or trimethylamine, mono-, di-or tri-ethanolamine, isobutylamine, n-amylamine and ammonia. The last of these may be used with an oxidizing agent such as sodium bromate. The acid solution may contain an organic acid, such as malic acid, or an inorganic one, such as hydrochloric acid.
GB1471866A 1966-04-02 1966-04-02 Improved removal of scale from metals Expired GB1132122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1471866A GB1132122A (en) 1966-04-02 1966-04-02 Improved removal of scale from metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1471866A GB1132122A (en) 1966-04-02 1966-04-02 Improved removal of scale from metals

Publications (1)

Publication Number Publication Date
GB1132122A true GB1132122A (en) 1968-10-30

Family

ID=10046272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1471866A Expired GB1132122A (en) 1966-04-02 1966-04-02 Improved removal of scale from metals

Country Status (1)

Country Link
GB (1) GB1132122A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107072A1 (en) * 2007-03-07 2008-09-12 Areva Np Gmbh Method for removing deposits containing magnetite and copper from containers in industrial and power plants

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107072A1 (en) * 2007-03-07 2008-09-12 Areva Np Gmbh Method for removing deposits containing magnetite and copper from containers in industrial and power plants
JP2010520466A (en) * 2007-03-07 2010-06-10 アレヴァ エンペー ゲゼルシャフト ミット ベシュレンクテル ハフツング Method for removing sediment containing magnetite and copper from containers of industrial and power plant equipment
US7931753B2 (en) 2007-03-07 2011-04-26 Areva Np Gmbh Method for removing deposits containing magnetite and copper from containers in industrial and power plants
KR101136308B1 (en) 2007-03-07 2012-04-26 아레바 엔피 게엠베하 Method for removing deposits containing magnetite and copper from containers in industrial and power plants
RU2453636C2 (en) * 2007-03-07 2012-06-20 Арева Нп Гмбх Method of removing deposits containing magnetite and copper from containers of industrial and electrical installations
CN101611172B (en) * 2007-03-07 2012-12-05 阿利发Np有限公司 Method for removing deposits containing magnetite and copper from containers in industrial and power plants

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