GB973521A - Improvements in or relating to jets or lances - Google Patents

Improvements in or relating to jets or lances

Info

Publication number
GB973521A
GB973521A GB2244262A GB2244262A GB973521A GB 973521 A GB973521 A GB 973521A GB 2244262 A GB2244262 A GB 2244262A GB 2244262 A GB2244262 A GB 2244262A GB 973521 A GB973521 A GB 973521A
Authority
GB
United Kingdom
Prior art keywords
tubes
injection
annulus
melt
gas
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
GB2244262A
Inventor
Charles Henry King
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.)
BOC Group Ltd
Original Assignee
British Oxigen 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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB2244262A priority Critical patent/GB973521A/en
Publication of GB973521A publication Critical patent/GB973521A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

<PICT:0973521/C6-C7/1> A lance or jet for injecting an inert, reducing or weakly-oxidizing gas in the treatment of molten metals, comprises three coaxial tubes, 10, 12 and 15, which are provided with coarse helical threads 14 and 18 on the outer walls of the enclosed tubes to give good thermal contact between adjacent tubes. The gas is indirectly preheated by radiation from the furnace walls and melt during its sinuous flow path through the inner tube 10, up the annulus in a spiral path between tubes 10 and 12, and down the outer annulus between tubes 12 and 15 prior to injection on to or into the melt. The injection of compressed air for stirring, propane for deoxidation of copper, and hydrocarbons for carburizing ferrous metals are particularly referred to.
GB2244262A 1962-06-12 1962-06-12 Improvements in or relating to jets or lances Expired GB973521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2244262A GB973521A (en) 1962-06-12 1962-06-12 Improvements in or relating to jets or lances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2244262A GB973521A (en) 1962-06-12 1962-06-12 Improvements in or relating to jets or lances

Publications (1)

Publication Number Publication Date
GB973521A true GB973521A (en) 1964-10-28

Family

ID=10179435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2244262A Expired GB973521A (en) 1962-06-12 1962-06-12 Improvements in or relating to jets or lances

Country Status (1)

Country Link
GB (1) GB973521A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016205312A1 (en) * 2015-06-17 2016-12-22 Epps Larry J Coaxial material-stirring lance and method for use
US10344343B2 (en) 2016-06-15 2019-07-09 Larry J Epps Multiple chamber material-stirring lance and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016205312A1 (en) * 2015-06-17 2016-12-22 Epps Larry J Coaxial material-stirring lance and method for use
US10240218B2 (en) 2015-06-17 2019-03-26 Larry J Epps Coaxial material-stirring lance and method of use
US10344343B2 (en) 2016-06-15 2019-07-09 Larry J Epps Multiple chamber material-stirring lance and method

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