Slag blocking device for a metallurgical vessel
AssigneeRefractory Intellectual Property GmbH & Co. KG
InventorsRick KOMANECKY, Jeremy STICKAN, Pavan SHIVARAM
Life of this patent
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Abstract
To prevent slag (S) from draining through an outlet (C) at the bottom (A) of a metallurgical vessel (2) at the beginning of a casting process, a slag blocking device (1) having an inner space (I) bordered by a circumferential wall (W) comprising a lower edge (E) is provided. The slag blocking device (1) has a density of 2.6 to 6 g/cm3, preferably 2.75 to 3.2 g/cm3.
Claims19
Slag blocking device (1) for a metallurgical vessel (2), wherein the slag blocking device (1) has an inner space (I) bordered by a circumferential wall (W), the circumferential wall (W) having a lower edge (E), characterized in that said slag blocking device (1) can be placed around an outlet (C), preferably a starter tube (3), of a metallurgical vessel (2) at the beginning of a casting process, during which molten metal (M) is poured into said metallurgical vessel (2), to block slag from entering the outlet (C), wherein the slag blocking device (1) has a density of 2.6 to 6 g/cm3, wherein the circumferential wall (W) has a decreasing thickness (d1) towards the lower edge (E).
Slag blocking device (1) according to claim 6, characterized in that the secondary material (12) is immersed in the main material (11).
Use of a slag blocking device (1) in a metallurgical vessel (2) containing molten steel and slag, wherein the slag blocking device (1) has an inner space (I) bordered by a circumferential wall (W), the circumferential wall (W) having a lower edge (E), characterized in that said slag blocking device (1) is placed around an outlet (C), preferably a starter tube (3), of the metallurgical vessel (2) at the beginning of a casting process, during which molten metal (M) is poured into said metallurgical vessel (2), to block slag from entering the outlet (C), wherein the density of the slag blocking device is higher than the density of slag and lower than the density of molten steel, wherein the circumferential wall (W) has a decreasing thickness (d1) towards the lower edge (E).
Dependencies are inferred from the claim text.