Supplying solid feed materials for a direct smelting process

Metallurgical apparatus – With control means responsive to sensed condition – With means supplying a treating agent

Reexamination Certificate

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C266S225000

Reexamination Certificate

active

06989126

ABSTRACT:
A process and apparatus for supplying solid feed materials for a direct smelting process to solids injection lances of a direct smelting vessel is disclosed. The feed materials supply apparatus includes a supply line (L) for conveying iron-containing material and solid carbonaceous material under pressure to solids injection lances (7), and the supply line includes a main feeder line section (15) and a plurality of branch line sections (17) extending from the main feeder line section. Each branch line section is connected to one solids injection lance for supplying iron-containing material and carbonaceous material to that lance. The apparatus further includes an assembly for dispensing iron-containing material under pressure into the main feeder line section of the supply line and an assembly for dispensing carbonaceous material under pressure into the main feeder line section of the supply line.

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patent: 6428603 (2002-08-01), Batterham
M. Birk et al., “Video Monitoring of Pulverized Coal Injection in the Beast Furnace” Conference Record of the 2001 IEEE Industry Applications Conference, 36th 1AS Annual Meeting, Chicago, IL, Sep. 30-Oct. 4, 2001, vol. 1 of 4, Conf. 36, Sep. 30, 2001, pp. 1354-1358, XP010561870.
B.L. Cusack et al.., “Initial Operation of thew Hismelt Research and Development Facility”, Iron and Steelmaker, Warrendale, WA, US, vol. 22, No. 2 Feb. 1995, pp. 13-20, XP009008584 ISSN:0275-8687.
R.J. Dry et al., “HISMELT -The Future in Direct Ironmaking”, Ironmaking Conference Proceedings, vol. 58, 1999, pp. 361-366, XP001147860.

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