Claims
- 1. A launder for discharging melt from a metallurgical furnace, comprising:
- a launder body having one end connected to said metallurgical furnace, said launder body defining a fluid passageway for allowing the melt, flowing from said metallurgical furnace into said one end, to flow therethrough in a direction away from said metallurgical furnace;
- wherein said launder body includes a threshold portion having a substantially horizontal threshold portion bottom which is positioned to determine a melt level in said metallurgical furnace above which the melt in the furnace begins to flow into the launder body, said launder body further including a closing portion having a substantially horizontal closing portion bottom for receiving a closing material thereon to close the fluid passageway of said launder body, said closing portion being arranged at a position displaced downstream in a direction of a melt flow with respect to said threshold portion, and said closing portion bottom being lower than said threshold portion bottom such that a stepped portion connects said threshold portion bottom and said closing portion bottom;
- said melt discharging launder further comprising a solid castable as the closing material positioned on said closing portion bottom.
- 2. A melt discharging launder as defined in claim 1, wherein said closing portion of said launder body is constructed to have an upper wall defining a tubular melt passageway.
- 3. A metallurgical furnace installation comprising:
- a metallurgical furnace; and
- at least one launder connected to said metallurgical furnace in fluid communication therewith for discharging melt from said metallurgical furnace;
- wherein said at least one launder includes a launder body having one end connected to said metallurgical furnace, said launder body defining a fluid passageway for allowing the melt, flowing from said metallurgical furnace into said one end, to flow therethrough in a direction away from said metallurgical furnace, said launder body including a substantially horizontal threshold portion for determining a melt level in said metallurgical furnace above which the melt in the furnace begins to flow into the launder body, said launder body further including a substantially horizontal closing portion constructed to receive a closing material thereon to close the fluid passageway of said launder body, said closing portion being arranged at a position displaced downstream with respect to said threshold portion and having a bottom lower than said threshold portion;
- said melt discharging launder further comprising a solid castable as the closing material positioned on said closing portion of one of said first and second launders.
- 4. A metallurgical furnace installation according to claim 3, wherein said metallurgical furnace includes a furnace body and an outlet, and said metallurgical furnace installation comprises first and second launders connected to said outlet of said furnace in fluid communication therewith, said first and second launders are arranged so as to extend in a direction away from each other, whereby space for work is ensured at a position adjacent to that portion from which said launders diverge.
- 5. A metallurgical furnace installation according to claim 4, wherein said outlet of said metallurgical furnace is formed so as to protrude outwards from said furnace body; and wherein said outlet and said first and second launders are arranged so as to assume a generally T-shape as viewed in plan.
- 6. A metallurgical furnace installation according to claim 4, wherein each of said launders is arranged so as to define a melt passageway bent in a horizontal plane at an upstream position from said threshold portion and at a downstream position from said closing portion.
- 7. A metallurgical furnace installation according to claim 3, wherein said closing portion of said launder body of each launder is constructed to have an upper wall defining a tubular melt passageway.
- 8. A launder for discharging melt from a metallurgical furnace, comprising:
- a launder body having one end connected to said metallurgical furnace, said launder body defining a fluid passageway for allowing the melt, flowing from said metallurgical furnace into said one end, to flow therethrough in a direction away from said metallurgical furnace;
- wherein said launder body includes a threshold portion having a horizontal threshold portion bottom which is positioned to determine a melt level in said metallurgical furnace above which the melt in the furnace begins to flow into the launder body, said launder body further including a closing portion having a horizontal closing portion bottom for receiving a closing material thereon to close the fluid passageway of said launder body, said closing portion being arranged at a position displaced downstream in a direction of a melt flow with respect to said threshold portion, and said closing portion bottom being lower than said threshold portion bottom such that a stepped portion connects said threshold portion bottom and said closing portion bottom.
- 9. A metallurgical furnace installation comprising:
- a metallurgical furnace; and
- at least one launder connected to said metallurgical furnace in fluid communication therewith for discharging melt from said metallurgical furnace;
- wherein said at least one launder includes a launder body having one end connected to said metallurgical furnace, said launder body defining a fluid passageway for allowing the melt, flowing from said metallurgical furnace into said one end, to flow therethrough in a direction away from said metallurgical furnace, said launder body including a horizontal threshold portion for determining a melt level in said metallurgical furnace above which the melt in the furnace begins to flow into the launder body, said launder body further including a horizontal closing portion constructed to receive a closing material thereon to close the fluid passageway of said launder body, said closing portion being arranged at a position displaced downstream with respect to said threshold portion and having a bottom lower than said threshold portion.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-223733 |
Sep 1993 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/291,489 filed on Aug. 17, 1994 now abandoned.
US Referenced Citations (3)
Continuations (1)
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Number |
Date |
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Parent |
291489 |
Aug 1994 |
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