ES8404415A1 - Method of minimizing slag carryover. - Google Patents

Method of minimizing slag carryover.

Info

Publication number
ES8404415A1
ES8404415A1 ES522241A ES522241A ES8404415A1 ES 8404415 A1 ES8404415 A1 ES 8404415A1 ES 522241 A ES522241 A ES 522241A ES 522241 A ES522241 A ES 522241A ES 8404415 A1 ES8404415 A1 ES 8404415A1
Authority
ES
Spain
Prior art keywords
slag
furnace
taphole
metal
carryover
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
ES522241A
Other languages
Spanish (es)
Other versions
ES522241A0 (en
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.)
USS Engineers and Consultants Inc
Original Assignee
USS Engineers and Consultants Inc
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 USS Engineers and Consultants Inc filed Critical USS Engineers and Consultants Inc
Publication of ES522241A0 publication Critical patent/ES522241A0/en
Publication of ES8404415A1 publication Critical patent/ES8404415A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • 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
    • C21C5/4653—Tapholes; Opening or plugging thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Package Closures (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

The method relates to minimizing slag carryover when draining molten metal from a furnace. A polyhedral-shaped body (22) having density intermediate that of the slag (20) and metal (18) is thrown onto the surface of the slag within a restricted area over the furnace taphole (14). The body will float at the slag-metal interface, and tend to lodge with one of its corners projecting into the taphole as the final portion of remaining metal drains out of the furnace. The shape of the body and its dimensions are selected so as to only partially block the taphole opening, causing flaring of the stream so as to signal a furnace operator of the impending flow of slag from the furnace. The operator then shuts off flow to prevent carryover of slag onto the molten metal already tapped. Since only the edges of the body contact the taphole, of the body does not become welded to the wall of the taphole and therefore is easily dislodged without loss of time between heats.
ES522241A 1982-05-10 1983-05-10 Method of minimizing slag carryover. Expired ES8404415A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37680082A 1982-05-10 1982-05-10

Publications (2)

Publication Number Publication Date
ES522241A0 ES522241A0 (en) 1984-04-16
ES8404415A1 true ES8404415A1 (en) 1984-04-16

Family

ID=23486561

Family Applications (1)

Application Number Title Priority Date Filing Date
ES522241A Expired ES8404415A1 (en) 1982-05-10 1983-05-10 Method of minimizing slag carryover.

Country Status (15)

Country Link
EP (1) EP0094241B1 (en)
JP (1) JPS5952189A (en)
KR (1) KR840004786A (en)
AR (1) AR231706A1 (en)
AT (1) ATE16945T1 (en)
AU (1) AU552735B2 (en)
BR (1) BR8302426A (en)
CA (1) CA1218846A (en)
DE (1) DE3361476D1 (en)
ES (1) ES8404415A1 (en)
FI (1) FI73739C (en)
HU (1) HU187077B (en)
IN (1) IN159857B (en)
NO (1) NO831649L (en)
YU (1) YU102483A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188132B (en) * 1986-03-19 1990-06-13 Labate Michael D Slag retaining device for use in vessels such as converters, ladles or the like.
GB8712255D0 (en) * 1987-05-23 1987-07-01 Goricon Metallurg Services Plug members
NL8801231A (en) * 1988-05-11 1989-12-01 Hoogovens Groep Bv STOP FOR A STEEL CONVERTER.
CN104117668B (en) * 2014-08-01 2016-03-02 莱芜钢铁集团有限公司 A kind of large bag cast pushing off the slag floating plug and preparation and slag stopping method
DE102017114859A1 (en) * 2017-07-04 2019-01-10 Sms Group Gmbh Apparatus for selectively controlling the tapping operation of a melt from an electric arc furnace

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718389A (en) * 1950-11-17 1955-09-20 Electro Chimie Metal Skimmer for holding slag back during pouring metal
AT259602B (en) * 1965-07-05 1968-01-25 Voest Ag Process for improving the separation of metal and slag when pouring molten metal from a furnace vessel provided with a tap hole
DE1508223B1 (en) * 1966-09-26 1970-04-09 Mannesmann Ag Float lock to hold back the slag during tapping with tapping converters
JPS4720803B1 (en) * 1968-10-31 1972-06-13

Also Published As

Publication number Publication date
KR840004786A (en) 1984-10-24
FI73739C (en) 1987-11-09
AR231706A1 (en) 1985-02-28
BR8302426A (en) 1984-01-10
JPS5952189A (en) 1984-03-26
YU102483A (en) 1986-04-30
EP0094241B1 (en) 1985-12-11
CA1218846A (en) 1987-03-10
ES522241A0 (en) 1984-04-16
NO831649L (en) 1983-11-11
IN159857B (en) 1987-06-13
FI831624L (en) 1983-11-11
HU187077B (en) 1985-11-28
ATE16945T1 (en) 1985-12-15
AU1443583A (en) 1983-11-17
AU552735B2 (en) 1986-06-19
DE3361476D1 (en) 1986-01-23
FI73739B (en) 1987-07-31
EP0094241A1 (en) 1983-11-16
FI831624A0 (en) 1983-05-10

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