US3382911A - Casting ferroalloys - Google Patents

Casting ferroalloys Download PDF

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Publication number
US3382911A
US3382911A US650845A US65084567A US3382911A US 3382911 A US3382911 A US 3382911A US 650845 A US650845 A US 650845A US 65084567 A US65084567 A US 65084567A US 3382911 A US3382911 A US 3382911A
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United States
Prior art keywords
ferromanganese
ferroalloy
casting
layer
cast
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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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US650845A
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English (en)
Inventor
Lloyd M Malone
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United States Steel Corp
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United States Steel Corp
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Publication date
Application filed by United States Steel Corp filed Critical United States Steel Corp
Priority to US650845A priority Critical patent/US3382911A/en
Application granted granted Critical
Publication of US3382911A publication Critical patent/US3382911A/en
Priority to DE19681758544 priority patent/DE1758544A1/de
Priority to FR1571845D priority patent/FR1571845A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D3/00—Pig or like casting

Definitions

  • ABSTRACT OF THE DISCLOSURE A method of casting ferroalloys such as ferromanganese or ferrosilicon by pouring molten ferroalloy into a confined area in a plurality of layers with each layer being solidified before pouring a succeeding layer. The last and uppermost layer of ferroalloy is water cooled and, when solidified, the cast ferroalloy may be removed as sized pieces.
  • This invention relates to the production of ferroalloys. More particularly, the invention relates to a method of producing sized pieces of ferroalloys such as ferromanganese and ferrosilicon without crushing and screening. Still more particularly, the invention relates to a new method of casting and handling ferromanganese and ferrosilicon.
  • ferroalloys e.g. ferromanganese
  • One technique comprises casting a ferroalloy, e.g. ferromanganese, from the furnace directly to boxes on railroad fiat cars. After solidifying, the ferromanganese is crushed and screened to desired sizes. This approach is generally unsatisfactory because of the danger of hot metal breaking out of the boxes on the railroad cars and because of the high maintenance costs of equipment and high cost of crushing and screening.
  • a safer, although still relatively expensive technique which has been used, is to cast the ferromanganese into pigs.
  • the ferromanganese is cast into ladles and poured into a pig casting machine which casts pigs continuously.
  • the cast pigs may then be further processed by crushing and screening to size.
  • Still another object of the invention is to provide a method of producing sized fragments of ferromanganese and ferrosilicon substantially cubically shaped and substantially of predetermined size.
  • a ferroalloy is cast into a confined area in such a manner that upon solidification the cast ferromanganese breaks up into pieces of controlled size.
  • the method comprises pouring a plurality of layers of ferromanganese into a confined area, solidifying the surface of each preceding layer prior to pouring the succeeding layer to allow layering without substantial fusion between layers, water cooling the last and uppermost layer to solidify and fracture the surface of same and removing cast ferromanganese from the con- ICC fined area in fragments substantially cubically shaped and approximately equal to layer thickness.
  • a molten ferroalloy is poured in successive layers as described into a casting pit enclosed with walls of loosely piled pieces of the same ferroalloy which are easily removed. After layering to the desired depth, one or more of the walls is taken away to provide access for recovering the ferroalloy in the pit.
  • FIGURE 1 is a perspective view of a plurality of casting pits suitable for use in accordance with the invention
  • FIGURE 2 is a view in elevation, partly in section, of one of the casting pits described in FIGURE 1;
  • FIGURE 3 is a perspective view of a portion of a plurality of layers of ferroalloy as would appear in the interior of the casting pit after removal of the confining walls.
  • FIGURE 1 shows a plurality of casting pits and troughs leading thereto as it would be constructed at a site near a ferroalloy supply, e.g. a ferromanganese or ferrosilicon furnace.
  • ferromanganese is produced in a blast furnace and can be cast into ladle cars which are transported on rails from the blast furnace.
  • the pits may also be constructed near blast furnaces in such a manner that ferromanganese can be cast directly into the pits from the furnaces.
  • Casting pits as illustrated in FIGURE 1 can be easily constructed at a point adjacent the tracks on which the ladle cars are transported, or alternatively, the tracks can be elevated.
  • the casting pit may be formed by piles of refractory material capable of containing the molten ferroalloy, e.g. ferromanganese, when it is poured into the casting pit.
  • the casting pit 10 is a confined area adapted to receive molten ferromanganese from a hot metal ladle car via a pouring trough 12.
  • the hot metal ladle car 11 shown in FIGURE 2 is representative of the ladle cars into which ferromanganese is cast from the blast furnace. The ladle cars are conveniently transported on rails to the casting pit area.
  • the casting pit itself may be constructed in any suitable manner so long as it is able to receive and contain molten ferromanganese from the ladle car.
  • One preferred construction consists of walls 14 of loose piled ferromanganese on a refractory lining or pad 16.
  • the trough 12 is preferably also constructed of a suitable refractory material and supported on a refractory bed.
  • Removable walls 14 are provided for access to the cast layers of ferromanganese in the confined area of the pit.
  • the ferromanganese may be easily removed by removing one or more of the wal s so that mechanical handling equipment may be brought in to recover the ferromanganese and load it into cars 18 for shipment.
  • FIGURE 3 The layering of ferromanganese in the casting pit is shown in FIGURE 3. As can be seen, there is a clean separation between each of the layers. The ferromanganese in each layer is fragmented and the ferromanganese can be recovered in pieces of controlled size ready for loading by mechanical equipment onto transportation cars.
  • molten ferromanganese is poured from a ladle car into a trough from which it flows into the casting pit.
  • the casting pit is constructed of a size which permits it to receive a full pour from the ladle.
  • the surface of the layer of ferromanganese 1s solidified either by air cooling or by water cooling and then a subsequent layer is cast onto the previous one. Any number of layers may be cast and the thickness of each layer may vary considerably, depending on the deslred size of ferromanganese pieces.
  • Control of the size of pieces of ferroalloy is achieved by controlling the layer thickness because the ferroalloy pieces produced are generally cubically shaped and approximately equal in size to the layer thickness.
  • the practice is to cast the alloy to a depth of about 48 inches in 6 layers, each about 8 inches thick.
  • a flowing trough for transferring the molten metal into the casting pit area is desirable to provide a gentle flowing action of the molten metal onto a surface of solidified ferroalloy.
  • the use of loose or fine ferroalloy similar to the material being cast for the pit walls makes pit size adjustment relatively quick and simple. With controlled layer thickness and cooling, the fragment size can also be controlled and relatively few fines will be produced.
  • any mechanical handling equipment may be used.
  • the use of more than one removable wall facilitates speedy recovery of the ferroalloy.
  • the product is immediately ready for loading and transportation.
  • Any number of casting pits may be used to accommodate the amount of ferroalloy available for casting.
  • the use of a sufiiciently long trough to permit the molten metal to flow instead of falling into the pit is desirable.
  • loose ferroalloy of similar composition may be spread over the bottom of the pit prior to casting. This serves the purpose of protecting the pit bottom from thermal shock. This loose bottom layer also facilitates easier removal by mobile equipment.
  • a method of producing sized pieces of ferroalloy without crushing and screening by casting ferroalloy in a confined area so that said cast ferroalloy fractures into pieces of controlled size comprising the steps of pouring a plurality of layers of molten ferroalloy into said confined area, solidifying each preceding layer prior to pouring the succeeding layer to allow layering without substantial fusion between layers and so as to allow the creation of stresses in the layer which induce fragmentation, water cooiing the last and uppermost layer to solidify and fracture the surface of same, and removing cast ferroalloy from said confined area in pieces substantially cubically shaped and approximately equal to the layer thickness.
  • ferroalloy is ferrosilicon
  • a method of producing sized pieces of ferroalloy without crushing and screening by casting ferroalloy in a confined area having at least one removable wall so that said cast ferroalloy fractures into pieces of controlled size comprising the steps of pouring a plurality of layers of molten ferroalloy into said confined area, solidifying the surface of each preceding layer prior to pouring the succeeding layer to allow layering without substantial fusion between layers, water cooling the last and uppermost layer to solidify and fracture the surface of same, withdrawing said removable wall to provide access to the ferroalloy within said confined area, and removing cast ferroalloy from said confined area in pieces substantially cubically shaped and approximately equal to the layer thickness.
  • ferroalloy is ferrosilicon
  • a method according to claim 4 including the step of forming said confined area by disposing piles of particulate ferromanganese continuously therearound.
  • a method according to claim 4 including the step of forming said confined area by disposing piles of particulate ferrosilicon continuously therearound.
  • a method of producing sized pieces of ferromanganese without crushing and screening by casting ferromanganese in a confined area so that said cast ferromanganese fractures into pieces of controlled size comprising the steps of pouring a first layer of molten ferromanganese into said confined area, pouring a plurality of successive layers onto said first layer, solidifying the surface of each preceding layer prior to pouring the succeeding layer to allow layering without substantial fusion between layers, each of said successive layers being poured onto the preceding layer by gently flowing same to preclude substantial intermixing and fusion between layers, water cooling the last and uppermost layer to solidify and fracture its surface, and removing cast ferromanganese from said confined area in pieces substantially cubically shaped and approximately equal to the layer thickness.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US650845A 1967-07-03 1967-07-03 Casting ferroalloys Expired - Lifetime US3382911A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US650845A US3382911A (en) 1967-07-03 1967-07-03 Casting ferroalloys
DE19681758544 DE1758544A1 (de) 1967-07-03 1968-06-24 Verfahren zur Herstellung von gesonderten Stuecken aus Ferrolegierungen
FR1571845D FR1571845A (de) 1967-07-03 1968-07-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US650845A US3382911A (en) 1967-07-03 1967-07-03 Casting ferroalloys

Publications (1)

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US3382911A true US3382911A (en) 1968-05-14

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US650845A Expired - Lifetime US3382911A (en) 1967-07-03 1967-07-03 Casting ferroalloys

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US (1) US3382911A (de)
DE (1) DE1758544A1 (de)
FR (1) FR1571845A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433283A (en) * 1968-04-03 1969-03-18 Ohio Ferro Alloys Corp Method of reducing friability of ferro-alloys
US3483916A (en) * 1968-01-31 1969-12-16 Union Carbide Corp Ferro alloy casting process
US3483914A (en) * 1967-04-24 1969-12-16 Union Carbide Corp Casting and sizing method for ferromanganese
US3720506A (en) * 1969-07-23 1973-03-13 Knapsack Ag Process for separating ferrophosphorus and phosphorus furnace slag from one another in a casting bed
US3911994A (en) * 1974-11-08 1975-10-14 Reynolds Metals Co Utilization of silicon fines in casting
RU2496600C2 (ru) * 2011-10-12 2013-10-27 Закрытое акционерное общество "Электротерм" Способ разливки ферросплавов и устройство для его осуществления

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3445632C1 (de) * 1984-12-14 1986-02-06 Mannesmann AG, 4000 Düsseldorf Verfahren und Vorrichtung zum Stranggiessen von sproeden Metallegierungen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917798A (en) * 1957-12-02 1959-12-22 Ross Haldon Method and apparatus for casting and handling ferro-manganese
US3323899A (en) * 1964-03-10 1967-06-06 Union Carbide Corp Casting process for ferroalloys

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2917798A (en) * 1957-12-02 1959-12-22 Ross Haldon Method and apparatus for casting and handling ferro-manganese
US3323899A (en) * 1964-03-10 1967-06-06 Union Carbide Corp Casting process for ferroalloys

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483914A (en) * 1967-04-24 1969-12-16 Union Carbide Corp Casting and sizing method for ferromanganese
US3483916A (en) * 1968-01-31 1969-12-16 Union Carbide Corp Ferro alloy casting process
US3433283A (en) * 1968-04-03 1969-03-18 Ohio Ferro Alloys Corp Method of reducing friability of ferro-alloys
US3720506A (en) * 1969-07-23 1973-03-13 Knapsack Ag Process for separating ferrophosphorus and phosphorus furnace slag from one another in a casting bed
US3911994A (en) * 1974-11-08 1975-10-14 Reynolds Metals Co Utilization of silicon fines in casting
RU2496600C2 (ru) * 2011-10-12 2013-10-27 Закрытое акционерное общество "Электротерм" Способ разливки ферросплавов и устройство для его осуществления

Also Published As

Publication number Publication date
DE1758544A1 (de) 1971-01-21
FR1571845A (de) 1969-06-20

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