US3902705A - Metallurgical device for treating molten metal - Google Patents

Metallurgical device for treating molten metal Download PDF

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Publication number
US3902705A
US3902705A US49664874A US3902705A US 3902705 A US3902705 A US 3902705A US 49664874 A US49664874 A US 49664874A US 3902705 A US3902705 A US 3902705A
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US
United States
Prior art keywords
rod
container
metal
briquettes
assembly
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 - Lifetime
Application number
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English (en)
Inventor
Jairaj Easwaran
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.)
Farley Inc
NL Industries Inc
Original Assignee
NL Industries 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 NL Industries Inc filed Critical NL Industries Inc
Priority to US49664874 priority Critical patent/US3902705A/en
Priority to CA226,714A priority patent/CA1050266A/en
Priority to JP7641875A priority patent/JPS5120012A/ja
Priority to GB3179075A priority patent/GB1495579A/en
Priority to IT2606075A priority patent/IT1040339B/it
Priority to NO752741A priority patent/NO138951C/no
Priority to SE7508898A priority patent/SE7508898L/xx
Priority to FR7524887A priority patent/FR2281989A1/fr
Priority to SU752163127A priority patent/SU735179A3/ru
Priority to BE159109A priority patent/BE832324A/xx
Priority to DE19752535795 priority patent/DE2535795A1/de
Priority to AU83880/75A priority patent/AU498589B2/en
Application granted granted Critical
Publication of US3902705A publication Critical patent/US3902705A/en
Assigned to FARLEY METALS, INC. reassignment FARLEY METALS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NL INDUSTRIES, INC. A NJ CORP.
Assigned to NATWEST USA CREDIT CORP. reassignment NATWEST USA CREDIT CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FARLEY METALS, INC.,
Assigned to FARLEY, INC. reassignment FARLEY, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 28, 1987 Assignors: FARLEY METALS, INC.
Assigned to BANK OF NEW YORK, THE reassignment BANK OF NEW YORK, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FARLEY INC.
Assigned to FARLEY, INC. reassignment FARLEY, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). RECORDED AT REEL 4739, FRAME 0041 Assignors: NATWEST USA CREDIT CORP.
Assigned to CONTINENTAL BANK N.A. reassignment CONTINENTAL BANK N.A. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOEHLER-JARVIS LIMITED PARTNERSHIP, A DE. LIMITED PARTNERSHIP
Assigned to FARLEY INC. reassignment FARLEY INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: FARLEY METALS, INC., A CORP. OF DE.
Assigned to FARLEY INC. reassignment FARLEY INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). RELEASE OF SECURED PARTY OF INTEREST RECORDED AT REE 5221 FRAME 038-043 ON JUNE 21, 1989 Assignors: BANK OF NEW YORK, THE
Assigned to FARLEY INC. reassignment FARLEY INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE ON 12/28/1987 Assignors: FARLEY METALS, INC., A CORP. OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/02—Dephosphorising or desulfurising
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • one method of treatment comprises forming magnesium metal into massive bodies with coke or other alloying metal compositions, and these bodies are introduced into the molten metal by placing them under a plunging bell which holds the magnesium containing briquettes under the surface of the molten metal, since these briquettes have a lower density than that of molten iron.
  • the stack of briquettes in the assembly contain apertures which are in alignment in order to permit a rod to be inserted through the apertures.
  • the briquettes are held in place on the rod by pins or plates attached to the rod and positioned at the top and bottom of the stack of briquettes.
  • this assembly contains either removable tight fitting covers on the top and bottom of the container which are removed when the rod is to be inserted through the assembly.
  • the metallurgical unit device comprises either 1. a stack of briquettes contained in the metal container and a rod extending through the container,
  • the briquettes are stacked on a rod and the briquettes and the rod are encased in the metal container.
  • the assembly comprises a stack of briquettes placed in the metal container
  • this assembly may be stored and shipped when the removable tightly fitting covers are used to protectthe assembly from the atmosphere. Since the removable covers are aligned with the apertures in the stack of briquettes, the covers may be removed and a rod may be inserted through the assembly to form the metallurgical unit device of the instant invention.
  • This unit device also may be stored, shipped or used in this configuration. it
  • FIG. I is a perspective view of a donut-shaped scrap iron briquette impregnated with magnesium metal.
  • FIG. 2 is a vertical cross-section of an assembly of scrap metal briquettes enclosed in a metal container.
  • FIG. 3 is a perspective view of a rod containing cross members to maintain the assembly on the rod
  • FIG. 4 is a perspective cut away vertical view of the metallurgical unit device in which the scrap metal as sembly is maintained on the rod which is inserted through the assembly.
  • FIG. 5 is a vertical cross-section of another form of the metallurgical unit device which is also included in the instant invention.
  • FIG. I a compressed porous scrap metal briquette I0 is impregnated with magnesium metal.
  • the briquette contains an aperture Ill, thereby producing a donut-shaped briquette.
  • FIG. 2 a stack of donutshaped briquettes 20 are placed in a container 21 which has end closures 22, having central apertures 22a provided with removable tight fitting covers 23.
  • the aperture 24 in the donut-shaped briquettes 20 are positioned in alignment with the apertures in the end closures 22 of the container 21., thus forming an assembly.
  • a rod 31 which is to be inserted through the assembly contains cross members comprising pins 32 in order to retain the assembly on the rod.
  • FIG. 4- is shown the assembly comprising the donut-shaped briquettes 40 stacked in the container 41 and the assembly is positioned on the rod 42 and maintained on the rod by pin 43 at top and bottom (not shown) of the container.
  • FIG. 5 is shown another form of the metallurgical device in which a stack of donut-shaped briquettes 51 are positioned on a rod 52.
  • the briquettes are held on the rod by pins 53 at the top and bottom of said stack.
  • the rod and the briquettes are then placed in a metal container 54 containing a top end closure 55, and the top end of the rod 56 protrudes through the top end closure of the container.
  • Ceramic cement 57 seals the opening where the rod extends through the container top.
  • the compressed porous scrap metal briquettes used in the instant invention are those which are prepared from scrap steel or ductile iron turnings which are compressed or compacted to produce a porous scrap metal briquette having a density of from 25% to 50% of the density of iron metal.
  • Scrap steel, turnings having length from 1/16 inch up to 9 inches, widths from 1/64 to 1 inch, and thicknesses from 1 to mils are particularly satisfactory.
  • These scrap metal pieces when piled together should have a density less than 15% of the density of iron metal.
  • the briquettes are compressed in dies to form, preferably, donut-shaped briquettes. These briquettes are then immersed in molten magnesium metal and the molten magnesium impregnates the network of compressed metal pieces to form the magnesium impregnated briquettes.
  • a number of donut-shaped briquettes are stacked one upon another and the stack is placed into a metal container.
  • the holes in the briquettes are aligned with one another and with the bottom and top covers of the container. These covers are tight fitting and removable.
  • this assembly is then ready for shipping or for storage, since the donuts are protected from the atmosphere.
  • This assembly may be used in any manner to treat molten iron.
  • This invention also contemplates the preparation of a metallurgical unit device which includes the use of the briquette assembly described above.
  • the top and bottom covers are removed from the container and a rod is inserted through the entire assembly.
  • the assembly is held on the rod by plates or pins which are attached to the rod and are positioned at the top and bottom of the container.
  • Another form of the metallurgical unit device which may also be used contains the stack of briquettes positioned on a rod and the briquettes and the rod are encased in a metal container, the upper end of the rod protruding through the top end of the container.
  • metal rods are employed, they should be coated with a refractory cement to prevent them from melting immediately when they are placed in the molten iron. If desired, graphite rods may also be employed.
  • metallurgical unit devices may then be used by lowering either of the entire units into the molten iron and the unit is held below the surface of the molten metal.
  • the metal container starts to dissolve in the molten metal and the magnesium metal in the briquettes starts to react with the molten iron and thereby reduces the sulfur content of the molten metal.
  • the magnesium metal Since the magnesium metal is infiltrated into the porous scrap metal briquette, the release of the magnesium metal is very rapid, but it is not violent. After 3 or 4 minutes most of the magnesium metal is dissolved, and after 5 or 6 minutes the scrap metal itself and the metal rod starts to melt in the molten metal.
  • the metallurgical unit devices may be lowered and raised from the molten metal when desired.
  • each donut-shaped briquette In order to prepare each donut-shaped briquette, 22.4 lbs. of these steel turnings were placed in a ringshaped die measuring OD X 5 ID X 6 inches thick. These turnings were then compressed at a load of 1,000 tons maximum (6.4 tons/sq. in.) to produce a donutshaped briquette measuring 15 OD X 5 ID X 1- /2 inches thick. The density of the metal network was 3.29 g/cc and the briquettes had a porosity of 58%.
  • a plurality of these donut briquettes were placed in a steel drum which was equipped with removable tight fitting top and bottom covers.
  • the top and bottom covers of the assembly were removed and a rod was inserted through the entire assembly and the assembly was held on the rod by a pin placed on the rod at the bottom of the assembly and a plate fastened to the rod at the top of the assembly.
  • the rod was coated with a ceramic cement.
  • the initial sulfur content of the iron was 0.041% and the final sulfur content was reduced to 0.023%.
  • the metallurgical unit device comprises both the briquettes and the rod encased in the metal container.
  • These metallurgical unit devices are simple and economical to prepare. They are also uniform in composition, and therefore reproducible results areobtained when used to desulfurize molten iron or to make nodular iron. These unit devices employ iron or steel as the carrier of the magnesium, and therefore do not introduce foreign substances which have to be removed from the molten iron. The use of these unit devices produce a rapid release of the magnesium metal into the molten iron without producing a violent reaction.
  • An assembly for use in a metallurgical unit device for desulfurizing iron comprising a stack of scrap metal briquettes impregnated with magnesium metal placed in a closed metal container to form said assembly, said closed metal container containing apertures in the top and bottom sections of said container, the apertures in said container having removable having tight fitting covers, said stack of briquettes also having apertures aligned with the apertures and the covers in said container, said briquettes protected from the atmosphere by said container.
  • An assembly for use in a metallurgical unit device for desulfurizing molten iron comprising a stack of scrap metal briquettes impregnated with magnesium metal placed in a closed metal container to form said assembly, said closed metal container having end closures, said end closures having apertures having removable tight fitting covers, said stack of briquettes also having apertures aligned with the apertures in said end closures, said briquettes protected from the atmosphere by said container.
  • a metallurgical unit device useful for desulfurizing molten iron comprising a stack of scrap metal briquettes impregnated with magnesium metal placed in a metal container to form an assembly, said briquettes having apertures aligned with one another and with container openings in the top and bottom of the containers, a rod inserted through said apertures and cross members positions on said rod at the top and bottom of said container to hold said assembly on said rod.
  • a metallurgical unit device useful for desulfurizing molten iron comprising a stack of scrap metal briquettes impregnated with magnesium metal placed in a metal container to form an assembly, said container having end closures, said end closures having apertures, said briquettes also having apertures aligned with one another and with the apertures in said end closures,
  • a rod inserted through said apertures and cross members positions on said rod at the top and bottom of said container to hold said assembly on said rod.
  • a metallurgical unit device in which the rod is metallic iron and said rod is coated with a ceramic cement.
  • a metallurgical unit device in which the rod is graphite.
  • a metallurgical unit device comprising a stack of scrap metal briquettes impregnated with magnesium metal positioned on a rod, said rod containing cross members at the top and bottom of said stack to hold said stack on said rod, said stack and said rod inserted in a metal container to protect said stack from the atmosphere, the upper end of said rod protruding through the top of said container, and ceramic cement sealing the junction of said cover and said rod from the atmosphere.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US49664874 1974-08-12 1974-08-12 Metallurgical device for treating molten metal Expired - Lifetime US3902705A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US49664874 US3902705A (en) 1974-08-12 1974-08-12 Metallurgical device for treating molten metal
CA226,714A CA1050266A (en) 1974-08-12 1975-05-12 Metallurgical device for treating molten metal
JP7641875A JPS5120012A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-08-12 1975-06-21
GB3179075A GB1495579A (en) 1974-08-12 1975-07-29 Metallurgical device for treating molten metal
IT2606075A IT1040339B (it) 1974-08-12 1975-08-04 Dispositivo metallurgico per il trattamento di metallo fuso
NO752741A NO138951C (no) 1974-08-12 1975-08-05 Middel for innfoering i en metallsmelte
SE7508898A SE7508898L (sv) 1974-08-12 1975-08-07 Metallurgisk anordning for behandling av smelt metall.
SU752163127A SU735179A3 (ru) 1974-08-12 1975-08-08 Блок реагентов
FR7524887A FR2281989A1 (fr) 1974-08-12 1975-08-08 Procede et dispositif pour introduire un additif dans un bain de metal en fusion
DE19752535795 DE2535795A1 (de) 1974-08-12 1975-08-11 In eine metallschmelze einbringbare metallurgische vorrichtung
BE159109A BE832324A (fr) 1974-08-12 1975-08-11 Dispositif metallurgique pour le traitement d'un bain de metal
AU83880/75A AU498589B2 (en) 1974-08-12 1975-08-12 Metallurgical device for treating molten metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49664874 US3902705A (en) 1974-08-12 1974-08-12 Metallurgical device for treating molten metal

Publications (1)

Publication Number Publication Date
US3902705A true US3902705A (en) 1975-09-02

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ID=23973552

Family Applications (1)

Application Number Title Priority Date Filing Date
US49664874 Expired - Lifetime US3902705A (en) 1974-08-12 1974-08-12 Metallurgical device for treating molten metal

Country Status (12)

Country Link
US (1) US3902705A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5120012A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU498589B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE832324A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1050266A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2535795A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2281989A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1495579A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1040339B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (1) NO138951C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE7508898L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SU (1) SU735179A3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247324A (en) * 1978-05-12 1981-01-27 Giovanni Guarino Method and apparatus for introducing solid substances into liquid metals
US20040025419A1 (en) * 2002-08-07 2004-02-12 Nottingham-Spirk Design Associates, Inc. Packaged stackable charcoal briquest
US20040222117A1 (en) * 2002-08-07 2004-11-11 Nottingham-Spirk Design Associates, Inc., An Ohio Corporation Packaged charcoal briquet product
US20070107299A1 (en) * 2002-08-07 2007-05-17 Creative Spark, Llc Packaged charcoal briquet product

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115902A (en) * 1975-04-01 1976-10-13 Sumitomo Forestry Apparatus for controlling insects of woods
US4500352A (en) * 1982-12-01 1985-02-19 Stanton And Staveley Limited Production of cast iron
JP6263037B2 (ja) * 2014-02-03 2018-01-17 三鷹光器株式会社 マグネシウム熱還元用のブリケット

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1175655A (en) * 1912-11-22 1916-03-14 Walter N Naylor Aluminium alloys.
US2809886A (en) * 1955-02-17 1957-10-15 Int Nickel Co Plunger for the introduction of substances with low vaporization temperature into liquid melts

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1175655A (en) * 1912-11-22 1916-03-14 Walter N Naylor Aluminium alloys.
US2809886A (en) * 1955-02-17 1957-10-15 Int Nickel Co Plunger for the introduction of substances with low vaporization temperature into liquid melts

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247324A (en) * 1978-05-12 1981-01-27 Giovanni Guarino Method and apparatus for introducing solid substances into liquid metals
US20040025419A1 (en) * 2002-08-07 2004-02-12 Nottingham-Spirk Design Associates, Inc. Packaged stackable charcoal briquest
US6790244B2 (en) 2002-08-07 2004-09-14 Nottingham-Spirk Design Associates, Inc. Packaged stackable charcoal briquet
US20040222117A1 (en) * 2002-08-07 2004-11-11 Nottingham-Spirk Design Associates, Inc., An Ohio Corporation Packaged charcoal briquet product
US20070107299A1 (en) * 2002-08-07 2007-05-17 Creative Spark, Llc Packaged charcoal briquet product
US8118887B2 (en) 2002-08-07 2012-02-21 Creative Sparks, LLC Packaged charcoal briquet product
US9131803B2 (en) 2002-08-07 2015-09-15 Creative Spark Llc Charcoal briquet and packaged charcoal briquet product

Also Published As

Publication number Publication date
BE832324A (fr) 1975-12-01
JPS5120012A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-02-17
GB1495579A (en) 1977-12-21
CA1050266A (en) 1979-03-13
NO138951C (no) 1978-12-13
SU735179A3 (ru) 1980-05-15
IT1040339B (it) 1979-12-20
FR2281989B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-03-17
AU498589B2 (en) 1979-03-15
FR2281989A1 (fr) 1976-03-12
SE7508898L (sv) 1976-02-13
DE2535795A1 (de) 1976-02-26
NO138951B (no) 1978-09-04
AU8388075A (en) 1977-02-17
NO752741L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-02-13

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Owner name: FARLEY METALS, INC., 233 SOUTH WACKER DRIVE, CHICA

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