Ore beneficiation
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United States of America Patent
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Jun 3, 2014
Grant Date -
Feb 7, 2013
app pub date -
Jul 27, 2012
filing date -
Aug 1, 2011
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Abstract
A method of enriching the iron content of low-grade iron-bearing ore materials has been developed which produces a high iron ore concentrate suitable for processing into pig iron and steel. The process includes reducing the low-grade iron-bearing ore materials to a fine particulate form and treating a water slurry of this material by applying a combination of ultrasonic treatments in a plurality of high and low intensity magnetic separation operations to remove interfering materials and concentrate magnetic and paramagnetic iron-bearing materials into a high-grade ore stock.
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