US3897049A - Mixer for metal superheating - Google Patents

Mixer for metal superheating Download PDF

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Publication number
US3897049A
US3897049A US453371A US45337174A US3897049A US 3897049 A US3897049 A US 3897049A US 453371 A US453371 A US 453371A US 45337174 A US45337174 A US 45337174A US 3897049 A US3897049 A US 3897049A
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US
United States
Prior art keywords
casing
lining
mixer
lugs
metal
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
US453371A
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English (en)
Inventor
Anatoly Alexeevich Cherny
Vladimir Alexandrovich Grachev
Evgeny Mikhailovich Kirin
Nikolai Andreevich Gorelov
Nikolai Vasilievich Boriskin
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Individual
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Individual
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Filing date
Publication date
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Publication of US3897049A publication Critical patent/US3897049A/en
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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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/06—Constructional features of mixers for pig-iron
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/22—Rotary drums; Supports therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/02—Rotary-drum furnaces, i.e. horizontal or slightly inclined of multiple-chamber or multiple-drum type
    • F27B2007/022—Rotary-drum furnaces, i.e. horizontal or slightly inclined of multiple-chamber or multiple-drum type the drum having a non-uniform section along its length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/26—Drives
    • F27B2007/261—Drives working with a ring embracing the drum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/2083—Arrangements for the melting of metals or the treatment of molten metals

Definitions

  • ABSTRACT A mixer comprises a rotary casing arranged horizontally as a truncated cone and lined with a refractory material. Provided inside the casing along its generant are radial lugs of a rectangular section. The height of said lugs is some 0.1 to 0.3 of an average diameter of the inner lining of the casing. The lugs form, together with the inner surface of the casing lining, channels combined into a common ring channel provided in the lining on its portion adjoining the greater base of the casing.
  • the invention relates to devices for melting and superheating metals, used in ferrous metallurgy and more particularly to mixers for metal superheating.
  • a mixer for metal superheating in the form of a rotary casing arranged horizontally as a truncated cone, wherein provided from the side of a larger base are a gas burner and a discharge spout for metal discharge and from the side of a smaller base are an exhaust pipe for removing combustion production from the mixer and a feeding chute through which molten metal is fed thereinto.
  • a gas burner provided from the side of a larger base are a gas burner and a discharge spout for metal discharge and from the side of a smaller base are an exhaust pipe for removing combustion production from the mixer and a feeding chute through which molten metal is fed thereinto.
  • An object of the present invention is to provide a mixer for metal superheating, whose design would help step up the molten metal superheating process.
  • Another object of the invention is to reduce the specific gas consumption.
  • Yet another object of the invention is to increase the thermal efficiency of the mixer.
  • a mixer for metal superheating comprising a rotary casing arranged horizontally as a truncated cone and lined with a refractory material, wherein provided from the side of a larger base are a gas burner and a discharge spout for metal discharge and from the side of a smaller base are an exhaust pipe for removing combustion products from the mixer and a feeding chute through which molten metal is fed thereinto, and wherein, according to the invention, there are rectangular lugs arranged radially inside the casing along its generant to be as high as some 0.1 to 0.3 of the value of an average diameter of the inner lining of said casing and forming, together with the inner surface of said lining, channels 16 and 17 combined into a common ring channel provided in the lining on its portion adjoining the larger base of said casing.
  • FIG. 1 shows the mixer of the invention, lateral view
  • FIG. 2 is ditto, longitudinal section
  • FIG. 3 is a section IIIIII as in FIG. 2.
  • the mixer has a casing 1 (FIGS. 1 and 2) in the form of a truncated cone.
  • the inner surface of the casing 1 has a refractory lining 2.
  • lugs 16 Provided readially on the inner surface of the refractory lining 2 are rectangular lugs 16 (FIG. 3) as high as 0.1 to 0.3 of the average diameter of the inner lining. These lugs 16 form, together with the inner surface of said lining 2, channels 17 combined into a common ring channel 18 (FIG. 2) provided in the lining on its portion adjoining the larger base of the casing l.
  • the mixer operates in the following manner.
  • the gas burner 9 Prior to its operation, the gas burner 9 (FIGS. I and 2) is fired and the mixer is being heated for 40 min up to some 1,600C. Then, molten metal is fed into the mixer along the feeding chute l5 and the drive of the electric motor 8 is cut in.
  • the provision of the radial lugs 16 (FIG. 3) on the inner surface of the lining, together with the channels 17, helps expand the superheating area and step up the related process, as the rotation of the mixer permits to trap molten metal which flows then through the channels 17 and over into the metal bath as drops and small streams.
  • the provision of the ring channel 18 permits to discharge hot metal from the mixer completely.
  • the mixer can operate both on cold and hot air.
  • the mixer of the invention is simple in design and permits to superheat molten metal up to 1,520C.
  • the provision of the radial lugs and channels on the inner surface of the mixer lining permits intensive mixing of the hot metal, which is also conductive to the absorption by it of alloying additives at a high temperature of the metal.
  • a mixer for metal superheating which comprises; a casing in the form of a truncated cone, arranged horizontally with the capability of rotation around its axis; a refractory lining arranged inside said casing; a gas burner mounted on said casing on the side of the larger base of said truncated cone; a discharge spout for discharging metal, mounted on said casing on the side of the larger base; an exhaust pipe for evacuating combustion products, mounted on said casing from the side of the smaller base of said truncated cone; a feeding chute for feeding molten metal, mounted on said casing on the side of the smaller base; radially inwardly extending spaced lugs of a rectangular section, axially extending within said casing along its circumference and adjoining said lining, said lugs having a height of about 0.1 to 0.3 of the average diameter of said lining; channels formed by the spaces between said lugs and the inner surface of said lining; and a ring channel provided

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
US453371A 1973-03-27 1974-03-21 Mixer for metal superheating Expired - Lifetime US3897049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU7301899192A SU470170A1 (ru) 1973-03-27 1973-03-27 Миксер

Publications (1)

Publication Number Publication Date
US3897049A true US3897049A (en) 1975-07-29

Family

ID=20547091

Family Applications (1)

Application Number Title Priority Date Filing Date
US453371A Expired - Lifetime US3897049A (en) 1973-03-27 1974-03-21 Mixer for metal superheating

Country Status (8)

Country Link
US (1) US3897049A (enrdf_load_stackoverflow)
DD (1) DD110669A1 (enrdf_load_stackoverflow)
DE (1) DE2412125A1 (enrdf_load_stackoverflow)
FR (1) FR2223648B1 (enrdf_load_stackoverflow)
GB (1) GB1416673A (enrdf_load_stackoverflow)
IT (1) IT1012561B (enrdf_load_stackoverflow)
SE (1) SE403135B (enrdf_load_stackoverflow)
SU (1) SU470170A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211569A (en) * 1979-03-09 1980-07-08 Corning Glass Works High index ophthalmic glasses

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US728109A (en) * 1902-05-21 1903-05-12 John W H James Furnace for oxidizing metals.
US1836139A (en) * 1927-12-13 1931-12-15 Francis M Mcdonnell Furnace for making steel
US3385585A (en) * 1964-02-28 1968-05-28 Nippon Kokan Kk Rotary furnace for continuously refining molten metal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US728109A (en) * 1902-05-21 1903-05-12 John W H James Furnace for oxidizing metals.
US1836139A (en) * 1927-12-13 1931-12-15 Francis M Mcdonnell Furnace for making steel
US3385585A (en) * 1964-02-28 1968-05-28 Nippon Kokan Kk Rotary furnace for continuously refining molten metal

Also Published As

Publication number Publication date
GB1416673A (en) 1975-12-03
FR2223648B1 (enrdf_load_stackoverflow) 1976-06-25
IT1012561B (it) 1977-03-10
DE2412125A1 (de) 1974-10-10
SE403135B (sv) 1978-07-31
SU470170A1 (ru) 1977-10-05
FR2223648A1 (enrdf_load_stackoverflow) 1974-10-25
DD110669A1 (enrdf_load_stackoverflow) 1975-01-05

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