Method for operating a blast furnace
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United States of America Patent
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May 16, 2017
Grant Date -
Jun 12, 2014
app pub date -
Jul 11, 2012
filing date -
Jul 15, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method of operating a blast furnace includes two or more lances that inject reducing agents from a tuyere; injecting a solid reducing agent and a flammable reducing agent from different lances; and disposing the lances so that an axial line that extends from an end of the lance that injects the solid reducing agent and is the axial line of the lance that injects the solid reducing agent and an axial line that extends from an end of the lance that injects the flammable reducing agent and is the axial line of the lance that injects the flammable reducing agent cross each other, and so that a main flow of the solid reducing agent injected and a main flow of the flammable reducing agent injected overlap.
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