Refractory lining disposed on the bottom of a metallurgical unit for holding a molten metal, method of providing a refractory lining disposed on the bottom of a metallurgical unit for holding a molten metal, and metallurgical unit for holding a molten metal
AssigneeRefractory Intellectual Property GmbH & Co. KG
InventorsRonald LANZENBERGER, David WAPPEL, Karl-Michael ZETTL, Johannes WUCHER
Life of this patent
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Abstract
The invention refers to a refractory lining disposed on the bottom of a metallurgical unit for holding a molten metal, a method of providing a refractory lining disposed on the bottom of a metallurgical unit for holding a molten metal, and a metallurgical unit for holding a molten metal.
Claims15
A refractory lining (8), being configured to be disposed on the bottom (5) of a metallurgical unit (1) for holding a molten metal, the refractory lining (8) comprising:
- 1.1 a first layer (9);
- and
- 1.2 second layer (10);
- wherein
- 1.3 the first layer (9) is configured to be disposed on the bottom (5) of the metallurgical unit (1);
- wherein
- 1.4 the second layer (10) is disposed on the first layer (9);
- wherein
- 1.5 the first layer (9) and the second layer (10) each have a chemical composition with MgO as the main oxide;
- wherein
- 1.6 the first layer (9) has a chemical composition with a proportion of Fe2O3 of at most 2.8% by mass, based on the mass of the first layer (9);
- and wherein
- 1.7 the second layer (10) has a chemical composition with a proportion of Fe2O3 of at least 3.2% by mass, based on the mass of the second layer (10).
A method of providing a refractory lining (8) disposed on the bottom (5) of a metallurgical unit (1) for holding a molten metal, the method comprising the steps of:
- A. providing a metallurgical unit (1) for holding a molten metal comprising:
- A.1 a bottom (5);
- B. providing a refractory lining (8), the refractory lining (8) comprising:
- B.1 a first layer (9);
- and
- B.2 a second layer (10);
- wherein
- B.3 the first layer (9) is adapted to be disposed on the bottom (5) of the metallurgical unit (1);
- wherein
- B.4 the second layer (10) is adapted to be disposed on the first layer (9);
- wherein
- B.5 the first layer (9) and the second layer (10) each have a chemical composition with MgO as the main oxide;
- wherein
- B.6 the first layer (9) has a chemical composition with a proportion of Fe2O3 of at most 2.8% by mass, based on the mass of the first layer (9);
- and wherein
- B.7 the second layer (10) has a chemical composition with a proportion of Fe2O3 of at least 3.2% by mass, based on the mass of the second layer (10);
- C. disposing the first layer (9) on the bottom (5);
- and
- D. disposing the second layer (10) on the first layer (9).
A metallurgical unit (1) for holding a molten metal, comprising:
- 12.1 a bottom (5);
- and
- 12.2 a refractory lining (8);
- wherein
- 12.2.1 the refractory lining (8) is disposed on the bottom (5) and comprises:
- 12.2.2 a first layer (9);
- and
- 12.2.3 a second layer (10);
- wherein
- 12.2.4 the first layer (9) is disposed on the bottom (5) of the metallurgical vessel;
- wherein
- 12.2.5 the second layer (10) is disposed on the first layer (9);
- wherein
- 12.2.6 the first layer (9) and the second layer (10) each have a chemical composition with MgO as the main oxide;
- wherein
- 12.2.7 the first layer (9) has a chemical composition with a proportion of Fe2O3 of at most 2.8% by mass, based on the mass of the first layer (9);
- and wherein
- 12.2.8 the second layer (10) has a chemical composition with a proportion of Fe2O3 of at least 3.2% by mass, based on the mass of the second layer (10).
Dependencies are inferred from the claim text.