Ladle bottom and ladle
AssigneeRefractory Intellectual Property GmbH & Co. KG
InventorsSarah Kohler, Alexander Maranitsch, Bernhard Spiess
Life of this patent
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Abstract
A ladle bottom being part of a metallurgical ladle for treating a metal melt as well as a corresponding metallurgical ladle.
Claims12
Ladle bottom made of a refractory ceramic body with an upper surface, a lower surface and a pouring channel extending between the upper surface and the lower surface, further comprising a diffusor box, being defined by a deepened section of said upper surface, wherein the diffusor box is characterized by the following features:
- a) it is arranged at a horizontal distance to a surface area of the ladle bottom used as an impact area for a metal melt poured onto said ladle bottom,
- b) it defines a secondary upper surface of the ladle bottom, vertically below the upper surface,
- c) wherein the secondary upper surface has a minimum horizontal area
- A
- min
- =
- n
- 4
-
- (
- 0.37
-
-
- r
- )
- 2
- +
- 0.3
- and a maximum horizontal area
- A
- max
- =
- n
- 4
-
- (
- 0.8
-
-
- r
- )
- 2
- +
- 0.3
- wherein r=radius of the ladle bottom and r≧0.75 m with rmax=2 m for all ladle bottoms with an effective radius of ≧2 m,
- d) an indentation, extending from said secondary upper surface towards the lower surface of the ladle bottom and defining a tertiary upper surface of the ladle bottom, vertically below the secondary upper surface, wherein
- e) the pouring channel runs through said diffusor box and indentation.
Metallurgical ladle with a ladle bottom, the ladle bottom made of a refractory ceramic body with an upper surface, a lower surface and a pouring channel extending between the upper surface and the lower surface, further comprising a diffusor box, being defined by a deepened section of said upper surface, wherein the diffusor box is characterized by the following features:
- a) it is arranged at a horizontal distance to a surface area of the ladle bottom used as an impact area for a metal melt poured onto said ladle bottom,
- b) it defines a secondary upper surface of the ladle bottom, vertically below the upper surface,
- c) wherein the secondary upper surface has a minimum horizontal area
- A
- min
- =
- π
- 4
-
- (
- 0.37
-
-
- r
- )
- 2
- +
- 0.3
- and a maximum horizontal area
- A
- max
- =
- π
- 4
-
- (
- 0.8
-
-
- r
- )
- 2
- +
- 0.3
- wherein r=radius of the ladle bottom and r≧0.75 m with rmax=2 m for all ladle bottoms with an effective radius of ≧2 m,
- d) an indentation, extending from said secondary upper surface towards the lower surface of the ladle bottom and defining a tertiary upper surface of the ladle bottom, vertically below the secondary upper surface, wherein
- e) the pouring channel runs through said diffusor box and indentation.
Dependencies are inferred from the claim text.