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AssigneeNu-Iron Technology, LLC
InventorsIwao Iwasaki, Richard F. Kiesel, David J. Englund, Dave Hendrickson
Estimating the term…
A method and system for producing metallic iron nuggets may include providing multiple layers of agglomerates, such as briquettes, balls and extrusions, of a reducible mixture of reducing material (such as carbonaceous material) and of a reducible iron bearing material (such as iron oxide) on a hearth material layer (such as carbonaceous material) and providing a coarse overlayer of carbonaceous material over at least some of the agglomerates. Heating the agglomerates of reducible mixture to 1425° C. or 1400° C. or 1375° C. results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15.
A method of producing metallic iron nuggets comprising the steps of:
A method of producing metallic iron nuggets comprising the steps of:
A method of producing metallic iron nuggets comprising the steps of:
Dependencies are inferred from the claim text.