Direct smelting process
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United States of America Patent
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Jun 7, 2016
Grant Date -
Dec 19, 2013
app pub date -
Feb 9, 2012
filing date -
Feb 9, 2011
priority date (Note) -
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Abstract
A molten bath-based process for direct smelting metalliferous material and producing molten metal in a direct smelting vessel that contains a molten bath that has a metal layer that is at least 900 mm deep. The process includes selecting operating parameters of the process so that feed material (solid material and carrier gas) is injected from above the metal layer into the metal layer via at least one solids injection lance with sufficient momentum to penetrate to a depth of at least 100 mm below a nominal quiescent surface of the metal layer to cause upward movement of molten material and gas from the metal layer.
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