Specialized metallurgical processes – compositions for use therei – Processes – Consolidating metalliferous material by agglomerating,...
Reexamination Certificate
2006-02-20
2009-10-06
Wyszomierski, George (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Consolidating metalliferous material by agglomerating,...
C075S570000, C075S749000
Reexamination Certificate
active
07597741
ABSTRACT:
A method of making steel in an electric arc furnace is provided. The method comprises the steps of charging a steelmaking furnace with an iron source, wherein the iron source is melted and refined in the steelmaking furnace during a campaign, providing a source of lime that is screened by a first screening device, compacting the lime material adjacent to the steelmaking furnace to a predetermined size, charging the compacted lime to the steelmaking furnace within a short period of time to avoid degradation of the compacted lime, and adding additional fluxing agents and additives to the steelmaking furnace to produce refined steel in the campaign.
REFERENCES:
patent: 2376998 (1945-05-01), Fulton
patent: 4004918 (1977-01-01), Fukuoka et al.
patent: 4491568 (1985-01-01), Bortnik et al.
patent: 5186742 (1993-02-01), Hoffman et al.
patent: 5397379 (1995-03-01), Barker et al.
patent: 5666638 (1997-09-01), Bergendahl
patent: 6102982 (2000-08-01), Isozaki et al.
patent: 2003/0192405 (2003-10-01), McClintock
patent: 2005/0011309 (2005-01-01), Wolfe
D. Schauwinhold et al. Steel: In Ullmann's Encyclopedia of Industrial Chemistry, Online Jun. 15, 2000, p. 1-68.
J. Dahl et al. Roll-press briquetting helps Iowa producer retain previously wasted fines as valuable product, Powder Handling and Processing, vol. 13, No. 2, Dec. 24, 1993, p. 1-4 —In IDS.
Richard Komarek, Roll-press briquetting can help lime producers improve materials handling, Mining Engineering, Dec. 24, 1993, p. 1-4 —In IDS.
Richard Komarek, “Roll-press Briquetting can help lime producers improve materials handling,” publication, p. 4, (Dec. 24, 1993).
Jeff Dahl, Dennis Jones, Richard Komarek, “Roll-Press Briquetting Helps Iowa Lime Producer Retain Previously Wasted Fines as Valuable Produce,” vol. 13 ( No. 2), p. 4, (Apr. 24, 2001).
PCT/US07/62386 International Search Report, Nov. 27, 2008.
PCT/US07/62386 Written Opinion, Nov. 25, 2008.
International Preliminary Report on Patentability for PCT/US2007/062386, dated Nov. 27, 2008.
Hahn Loeser & Parks LLP
Nucor Corporation
Shevin Mark L
Stein Arland T.
Wyszomierski George
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