Bottom stirring tuyere and method for a basic oxygen furnace

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United States of America Patent

PATENT NO 10781499
APP PUB NO 20190218631A1
SERIAL NO

15873616

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Abstract

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A method of operating a BOF bottom stir tuyere having an inner nozzle surrounded by an annular nozzle, including during a hot metal pour phase and a blow phase, flowing an inert gas through both nozzles; during a tap phase, initiating a flow of a first reactant through the inner nozzle and a flow of a second reactant through the annular nozzle, and ceasing the flow of inert gas through the nozzles, wherein the first and second reactants includes fuel and oxidant, respectively, or vice-versa, such that a flame forms as the fuel and oxidant exit the tuyere; during a slag splash phase, continuing the flows of fuel and oxidant to maintain the flame; and after ending the slag splash phase and commencement of another hot metal pour phase, initiating a flow of inert gas through both nozzles and ceasing the flows of the first and second reactants.

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Patent Owner(s)

Patent OwnerAddress
AIR PRODUCTS AND CHEMICALS INC1940 AIR PRODUCTS BOULEVARD PATENT DEPT ALLENTOWN PA 18106-5500

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Buragino, Gregory J Macungie, US 6 6
Buzinski, Michael David Slatington, US 12 61
Gangoli, Shailesh Pradeep Easton, US 18 59
Guha, Avishek Breinigsville, US 7 8
Gupta, Anshu Whitehall, US 7 112
He, Xiaoyi Orefield, US 30 141
Hewertson, Russell James Wescosville, US 5 9
Niemkiewicz, Kyle J Coopersburg, US 1 0
Sane, Anup Vasant Allentown, US 21 27

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