Slag control in a channel induction furnace
AssigneeHeritage Environmental Services, LLC
InventorsJames E. Bratina, Thomas Edward Roberts
Life of this patent
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Abstract
A method of operating a channel induction furnace to process a feed material and obtain therefrom at least one of a molten metal product, a vapor phase metal product and a slag product. The method involves maintaining a slag layer on the molten bath that has a thickness that is sufficient to support the feed material while minimizing heat transfer through the slag layer and minimizing the resistance of vapor phase components from transferring through the slag layer. The fluidity of the slag layer is controlled by heating the slag layer and adjusting the chemistry of the slag layer.
Claims20
A method of processing at least one of a molten metal product, a vapor phase metal product and a slag product from at least one waste material which comprises:
- providing a channel induction furnace having a headspace and containing a molten metal bath;
- forming and maintaining a slag layer on the molten bath;
- feeding at least one waste material into a channel induction furnace so that the at least one waste material is supported by the slag layer;
- and
- allowing the at least one waste material to react in the channel induction furnace to produce at least one of a molten metal product that passes into the molten metal bath, a vapor phase metal product that passes into the headspace of the channel induction furnace and a slag product that is added to the slag layer;
- wherein the slag layer has a thickness and the method further comprises:
- maintaining the thickness of the slag layer at a level so that the thickness is sufficient to support the at least one waste material by the slag layer while minimizing heat transfer through the slag layer.
A method of processing at least one of a molten metal product, a vapor phase metal product and a slag product from at least one waste material which comprises:
- providing a channel induction furnace having a headspace and containing a molten metal bath;
- forming and maintaining a slag layer on the molten bath;
- feeding at least one waste material into a channel induction furnace so that the at least one waste material is supported by the slag layer;
- and
- allowing the at least one waste material to react in the channel induction furnace to produce at least one of a molten metal product that passes into the molten metal bath, a vapor phase metal product that passes into the headspace of the channel induction furnace and a slag product that is added to the slag layer;
- wherein the slag layer has a thickness and the method further comprises:
- maintaining the thickness of the slag layer at a level so that the thickness is sufficient to support the at least one waste material by the slag layer while minimizing the resistance of vapor phase components from transferring through the slag layer.
Dependencies are inferred from the claim text.