Spouted bed circulating fluidized bed direct reduction system and method
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United States of America Patent
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Oct 7, 1997
Grant Date -
N/A
app pub date -
Sep 13, 1995
filing date -
Aug 12, 1994
priority date (Note) -
Expired
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Abstract
A method and apparatus for producing direct reduced iron from iron oxide fines. The iron oxide raw material are passed through a pre-heater having a spouted port then to a primary spouted bed circulating fluidizing bed reactor and then to a bubbling fluidizing bed reactor. The reaction of the strong reducing gas mixture, through this series of beds allows intimate contact between the fines and small particles with the reducing gas to facilitate the direct reduction of the iron oxide fines to metallized iron.
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