Process and equipment for the production of direct reduced iron and/or pig iron from iron ores having a high-phosphorus content
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United States of America Patent
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Oct 16, 2012
Grant Date -
Dec 8, 2011
app pub date -
Jun 8, 2010
filing date -
Jun 8, 2010
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Abstract
A process and apparatus for refining iron from high-phosphorus content iron ores. The process involves mixing a high-phosphorus iron oxide ore and an alkaline solution of pH between about 12.5 and 13.5, screening the mixture by gravity to separate an alkaline-high-phosphorus solution from a low-phosphorus iron ore; and treating the low-phosphorus iron ore with lime and a natural gas.
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