Direct smelting process and apparatus
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United States of America Patent
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Nov 3, 2015
Grant Date -
Mar 22, 2012
app pub date -
Feb 9, 2010
filing date -
Feb 9, 2009
priority date (Note) -
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Abstract
A process and apparatus for direct smelting metalliferous material is disclosed. The invention concentrates injection of solid feed materials comprising metalliferous material and carbonaceous material into a direct smelting vessel during the course of the process into a relatively small region within a metal layer in a molten bath in the vessel in order to generate a substantial upward movement of molten material and gas from the metal layer into a region in the vessel that is above the molten bath. In particular, the invention injects the solid feed materials with sufficient momentum and/or velocity via an opposed pair of lances that are oriented within the vessel and arranged to form overlapping plumes of injected material in the molten bath.
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