Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Reexamination Certificate
2005-12-07
2009-12-08
Wyszomierski, George (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
C075S503000, C075S771000, C075S772000
Reexamination Certificate
active
07628839
ABSTRACT:
Method and system for producing metallic nuggets includes providing reducible mixture (e.g., reducible micro-agglomerates; reducing material and reducible iron bearing material; reducible mixture including additives such as a fluxing agent; compacts, etc.) on at least a portion of a hearth material layer. In one embodiment, a plurality of channel openings extend at least partially through a layer of the reducible mixture to define a plurality of nugget forming reducible material regions. Such channel openings may be at least partially filled with nugget separation fill material (e.g., carbonaceous material). Thermally treating the layer of reducible mixture results in formation of one or more metallic iron nuggets. In other embodiments, various compositions of the reducible mixture and the formation of the reducible mixture provide one or more beneficial characteristics.
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Beaudin Robert C.
Bleifuss Rodney L.
Iwasaki Iwao
Kiesel Richard F.
Lalich Michael J.
Hahn Loeser & Parks LLP
McGuthry-Banks Tima M
Wyszomierski George
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