Heating device for preheating a liquid-metal transfer container
View Patent ↗A heating device for preheating a container ( 3 ), such as a transfer ladle, transferring liquid metal in melting operations, which is lined with refractory material, wherein the container is heated in a heating stand ( 1 ) having a container closure lid ( 2 ), is characterized by the use of porous burners ( 7 ) for heating the container ( 3 ) and keeping it warm.
1. A method for preheating a vessel for transferring liquid metal in melting operations, which vessel is lined with refractory material, comprising the steps of:
arranging the vessel in a heating stand;
covering the vessel with a cover;
arranging porous burners in arrays;
preheating the vessel with the porous burners for heating and maintaining temperature of the vessel; and
providing a column that extends into the vessel through the cover, and distributing the arrays of the porous burners in the column.
2. The method in accordance with claim 1 , including arranging the porous burners to be distributed over an entire circumference of the column.
3. The method in accordance with claim 1 , wherein the column has a polygonal shape.
4. The method in accordance with claim 1 , including providing a lifting device to lift the column.
5. The method in accordance with claim 1 , including rotating the column about its longitudinal axis.