Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Reexamination Certificate
2008-07-22
2008-07-22
Kastler, Scott (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
C266S171000
Reexamination Certificate
active
07402191
ABSTRACT:
As a pretreatment of a manufacturing process of sintered ore, a sintering material including iron ore, a SiO2-containing material, a limestone base powdery material and a solid fuel type powdery material is projected as a additional coating auxiliary raw material into the drum mixer with a additional coating conveyor disposed in proximity to an exhaust outlet of the drum mixer. Preferably, a sintering material excepting a limestone base powdery material and a solid fuel type powdery material is charged from a charge inlet of the drum mixer to granulate and in a region disposed on a downstream side, an additional coating auxiliary raw material including a limestone base powdery material and a solid fuel type powdery material is added, and thereby until reaching the exhaust outlet, the additional coating auxiliary raw material is deposited and formed on a exterior coating portion of the sintering material.
REFERENCES:
patent: 5520719 (1996-05-01), Okuno et al.
patent: 2006/0112786 (2006-06-01), Pammer et al.
patent: A 2000-290732 (2000-10-01), None
patent: A 2002-285250 (2002-10-01), None
patent: 2002-332526 (2002-11-01), None
English language translation of JP 2002-332526 Nov. 2002.
Aizawa Kanji
Oyama Nobuyuki
Ueki Takayuki
JFE Steel Corporation
Kastler Scott
Oliff & Berridg,e PLC
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