Method and apparatus for treatment sulphidic concentrates
AssigneeOutokumpu Engineering Contractors Oy
InventorRolf Malmstrom
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Abstract
A method for oxidizing treatment of molten matte and at the same time directly smelting sulphidic concentrate in a refractory-lined liquid bath reactor, e.g. a converter, into which oxidizing air is introduced below the surface of the liquid bath. For additional supply of energy in order to achieve thermal balance or increase of capacity, sulphidic concentrate is introduced into the gas phase of the liquid bath reactor together with oxygen gas or oxygen-enriched gas by means of a concentrate burner.
Claims10
A method for oxidizing treatment of molten matte and simultaneous direct smelting of sulphidic concentrate in a refractory-lined liquid bath reactor converter, into which oxidizing air is introduced below the surface of the liquid bath, wherein, for additional supply of energy in order to achieve thermal balance or increase of capacity in the liquid bath reactor, at least a portion of the sulphidic concentrate is introduced into a gas phase of the liquid bath reactor together with oxygen gas or oxygen-enriched air through a concentrate burner, for combusting and smelting concentrate in a gas space before it reaches the liquid bath.
A liquid bath reactor for oxidizing treatment of molten matte and simultaneous direct smelting of sulphidic concentrate, in which tuyeres are disposed in the liquid bath reactor for injection of air below the surface of a liquid bath in the reactor, and having inlets for molten matte and sulphidic concentrate above the surface of the liquid bath, wherein a concentrate burner is disposed in the gas phase of the liquid bath reactor for introducing concentrate above the surface of the liquid bath, for combusting and smelting concentrate in a gas space before it reaches the liquid bath.
Dependencies are inferred from the claim text.