US3656989A - Production of metal-impregnated porous coke materials - Google Patents

Production of metal-impregnated porous coke materials Download PDF

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Publication number
US3656989A
US3656989A US19123A US3656989DA US3656989A US 3656989 A US3656989 A US 3656989A US 19123 A US19123 A US 19123A US 3656989D A US3656989D A US 3656989DA US 3656989 A US3656989 A US 3656989A
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US
United States
Prior art keywords
metal
process according
impregnated
bed
porous
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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
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US19123A
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English (en)
Inventor
Kenneth Frederick Layland
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.)
Foseco International Ltd
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Foseco International Ltd
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Publication of US3656989A publication Critical patent/US3656989A/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00Refining of pig-iron; Cast iron
    • C21C1/08Manufacture of cast-iron
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00Refining of pig-iron; Cast iron
    • C21C1/10Making spheroidal graphite cast-iron

Definitions

  • This invention relates to the production of metal-im pregnated porous materials. It is of particular value in connection with the production of metal impregnated coke, and particularly magnesium impregnated coke, and will be described with particular reference thereto. However the invention is of wider applicability in that it may be employed for the production of materials of the said type irrespective of the porous material and metal to be used.
  • Nodular iron is sometimes referred to as spheroidal graphite iron, or as ductile iron.
  • magnesium, and the alkali metals are useful additives for the purpose of converting any dissolved iron oxides or finely dispersed silicates in the molten metal into insoluble magnesium or alkali metal oxides and silicates.
  • the additive for the molten metal a porous carrier material such as porous coke, carbon or graphite which has been impregnated with the desired metal (usually magnesium or an alkali metal).
  • the porosity of the carrier may be, for example, up to 50 percent, i.e. 50 percent of the total volume of the carrier is made up of pores.
  • the production of such an additive has hitherto been effected by plunging the porous carrier material into a molten bath of the desired metal (e.g. magnesium or alkali metal) so that the pores become filled, or at least partially filled, with the metal, and then solidifying the molten metal in the pores by chilling the impregnated porous body obtained.
  • the chilling, or quenching, operation is effected by plunging the hot impregnated material into an oil bath.
  • a process for the production of a porous carrier material having a metal impregnated into the pores thereof which comprises impregnating pieces of porous carrier material with hot molten metal so that the same enters the pores thereof, and depositing the impregnated product into a fluidized bed of granular material thereby to quench it.
  • a principal advantage of the use of a fluidized bed as a quenching medium is that it tends to distribute the impregnated material according to its effective density.
  • fully impregnated pieces of porous carrier due to their metal content, tend to be heavier and to sink in the bed, while any pieces of porous carrier which have not become impregnated or are only very lightly impregnated (and which are therefore unsatisfactory or less satisfactory) tend to form a dross floating on the surface of the bed.
  • a final product, recovered from the lower ranges of the bed of high average quality is obtained.
  • porous material is preferably coke but other porous materials may be employed according to the use to which the final metal-impregnated material is to be put.
  • pieces is used herein to cover pieces of widely varying size, for example from granules to lumps. Coke pieces for impregnation may vary from 6mm to 15 cm in mean diameter.
  • the metal may be any such as may be required in the final product but for use in the production of additives for molten ferrous metal, the impregnated metal is preferably magnesium or an alkali metal such as sodium, potassium or lithium. Other metals, e.g. aluminum or copper may be used for special purposes.
  • the porous carrier may be impregnated with more than one material, including a metal, again to produce products of value for special purposes.
  • rare earth halides may be used in asimilar way to the halides referred to above to form a coating on magnesium impregnated coke.
  • the magnesium vapour produced from the magnesium impregnated coke reduces the halides to the metal, for example cerium fluoride may be reduced to cerium metal, and the metal acts to counteract the effect of elements such as bismuth or titanium, which may be present in the iron and which would normally prevent effective conversion of the graphite in the iron to nodular or spheroidal form.
  • alloys can be used as impregnants, particularly alloys of the metals noted above or containing one or more such metals.
  • a porous coke carrier material having a metal selected from the group consisting of magnesium, sodium, potassium and lithium impregnated into the pores thereof by impregnating pieces of porous coke carrier material with hot molten metal so that the same enters the pores thereof and thereafter quenching the impregnated product to solidify the molten metal, the improvement comprising depositing the impregnated product into a fluidized bed with air as the fluidizing medium of a granular particulate material to quench the impregnated product.
  • the granular fusible material is a member selected from the group consisting of alkali and alkaline earth metal halides and complex halides.
  • a process according to claim 4 wherein the granular fusible material is a rare earth metal halide.
  • metal for impregnating is an alloy containing at least one metal selected from the group consisting of magnesium, sodium, potassium and lithium.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Catalysts (AREA)
  • Carbon And Carbon Compounds (AREA)
US19123A 1969-03-19 1970-03-12 Production of metal-impregnated porous coke materials Expired - Lifetime US3656989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB04538/69A GB1284269A (en) 1969-03-19 1969-03-19 Production of metal-impregnated porous materials

Publications (1)

Publication Number Publication Date
US3656989A true US3656989A (en) 1972-04-18

Family

ID=10043011

Family Applications (1)

Application Number Title Priority Date Filing Date
US19123A Expired - Lifetime US3656989A (en) 1969-03-19 1970-03-12 Production of metal-impregnated porous coke materials

Country Status (8)

Country Link
US (1) US3656989A (enrdf_load_stackoverflow)
JP (1) JPS5145524B1 (enrdf_load_stackoverflow)
AT (1) AT313949B (enrdf_load_stackoverflow)
BE (1) BE747644A (enrdf_load_stackoverflow)
CA (1) CA926714A (enrdf_load_stackoverflow)
FR (1) FR2044700B1 (enrdf_load_stackoverflow)
GB (1) GB1284269A (enrdf_load_stackoverflow)
NL (1) NL150514B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867177A (en) * 1972-01-05 1975-02-18 Dow Chemical Co Impregnation of porous body with metal
US3868248A (en) * 1971-10-06 1975-02-25 Foseco Int Deoxidising molten non-ferrous metals
US3885956A (en) * 1974-05-21 1975-05-27 Rheinische Kalksteinwerke Method and composition for the treatment of ferrous melts and process for making the treating composition
US3918963A (en) * 1973-06-20 1975-11-11 Luigi Palumbo Addition agent for molten metals and process for making the same
US3957502A (en) * 1971-11-17 1976-05-18 Magnesium Elektron Limited Addition of magnesium to molten metal
US3973061A (en) * 1973-08-03 1976-08-03 Nl Industries, Inc. Method for the preparation of porous ferrous metal impregnated with magnesium metal
US4019897A (en) * 1975-08-13 1977-04-26 Aikoh Co., Ltd. Desulfurizing and inoculating agent for molten iron
US4083716A (en) * 1975-11-14 1978-04-11 Aikoh Co., Ltd. Magnesium base treating agent of molten iron
US4194903A (en) * 1976-10-12 1980-03-25 Hoesch Werke Aktiengesellschaft Method of producing steel with the lowest possible sulfur content by desulfurization of pig iron with magnesium coke
US4225343A (en) * 1978-04-21 1980-09-30 Centro Sperimentale Metallurgico S.P.A. Addition agent for molten metals
US4236914A (en) * 1979-08-15 1980-12-02 Minoru Kitamura Desulfurization composition for molten pig iron
US4299620A (en) * 1979-12-27 1981-11-10 The University Of Alabama Lamellar graphite inoculant
US4353739A (en) * 1980-05-10 1982-10-12 Foseco International Limited Desulphurization of ferrous melts
US4617053A (en) * 1985-09-20 1986-10-14 Great Lakes Carbon Corporation Metal reinforced porous refractory hard metal bodies

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53122520U (enrdf_load_stackoverflow) * 1977-03-04 1978-09-29
DE3929070A1 (de) * 1988-11-04 1990-05-10 Fischer Ag Georg Verfahren zum behandeln einer gusseisenschmelze mittels reinmagnesium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506317A (en) * 1947-02-15 1950-05-02 Standard Oil Dev Co Removal of heat from finely-divided solids
US2561393A (en) * 1945-10-26 1951-07-24 Donald E Marshall Process and apparatus for vaporizing solutions and recovering solids therefrom
US3019128A (en) * 1957-09-17 1962-01-30 Union Carbide Corp Coated carbonaceous articles
US3053704A (en) * 1953-11-27 1962-09-11 Exxon Research Engineering Co Heat treating metals

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1409567A (fr) * 1964-08-31 1965-08-27 American Cast Iron Pipe Co Procédé de préparation de fer nodulaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561393A (en) * 1945-10-26 1951-07-24 Donald E Marshall Process and apparatus for vaporizing solutions and recovering solids therefrom
US2506317A (en) * 1947-02-15 1950-05-02 Standard Oil Dev Co Removal of heat from finely-divided solids
US3053704A (en) * 1953-11-27 1962-09-11 Exxon Research Engineering Co Heat treating metals
US3019128A (en) * 1957-09-17 1962-01-30 Union Carbide Corp Coated carbonaceous articles

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868248A (en) * 1971-10-06 1975-02-25 Foseco Int Deoxidising molten non-ferrous metals
US3957502A (en) * 1971-11-17 1976-05-18 Magnesium Elektron Limited Addition of magnesium to molten metal
US3867177A (en) * 1972-01-05 1975-02-18 Dow Chemical Co Impregnation of porous body with metal
US3918963A (en) * 1973-06-20 1975-11-11 Luigi Palumbo Addition agent for molten metals and process for making the same
US3973061A (en) * 1973-08-03 1976-08-03 Nl Industries, Inc. Method for the preparation of porous ferrous metal impregnated with magnesium metal
US3885956A (en) * 1974-05-21 1975-05-27 Rheinische Kalksteinwerke Method and composition for the treatment of ferrous melts and process for making the treating composition
US4019897A (en) * 1975-08-13 1977-04-26 Aikoh Co., Ltd. Desulfurizing and inoculating agent for molten iron
US4083716A (en) * 1975-11-14 1978-04-11 Aikoh Co., Ltd. Magnesium base treating agent of molten iron
US4194903A (en) * 1976-10-12 1980-03-25 Hoesch Werke Aktiengesellschaft Method of producing steel with the lowest possible sulfur content by desulfurization of pig iron with magnesium coke
US4225343A (en) * 1978-04-21 1980-09-30 Centro Sperimentale Metallurgico S.P.A. Addition agent for molten metals
US4236914A (en) * 1979-08-15 1980-12-02 Minoru Kitamura Desulfurization composition for molten pig iron
US4299620A (en) * 1979-12-27 1981-11-10 The University Of Alabama Lamellar graphite inoculant
US4353739A (en) * 1980-05-10 1982-10-12 Foseco International Limited Desulphurization of ferrous melts
US4617053A (en) * 1985-09-20 1986-10-14 Great Lakes Carbon Corporation Metal reinforced porous refractory hard metal bodies

Also Published As

Publication number Publication date
NL150514B (nl) 1976-08-16
NL7003948A (enrdf_load_stackoverflow) 1970-09-22
JPS5145524B1 (enrdf_load_stackoverflow) 1976-12-04
DE2012411B2 (de) 1976-07-29
FR2044700B1 (enrdf_load_stackoverflow) 1973-10-19
BE747644A (fr) 1970-08-31
GB1284269A (en) 1972-08-02
FR2044700A1 (enrdf_load_stackoverflow) 1971-02-26
DE2012411A1 (de) 1970-12-03
AT313949B (de) 1974-03-11
CA926714A (en) 1973-05-22

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