System and process for dry recovery of iron oxide fines from iron bearing compacted and semicompacted rocks
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United States of America Patent
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Jun 16, 2020
Grant Date -
Feb 8, 2018
app pub date -
Feb 5, 2016
filing date -
Feb 13, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A system and a process for dry recovery of iron oxide fines from iron hearing compact and semicompact rocks are provided, which system and process utilize primary, secondary and tertiary crushing components for preliminarily reducing the granulometry of ores containing the iron oxide fines in compact and semicompact rocks. Dynamic air classifier components are provided for finely grinding iron oxide minerals reduced through primary, secondary and tertiary crushing, along with static air classification components arranged in series for intermediate granulometric cuts and bag filters for retaining fine fraction. The system and process further comprise magnetic rolls, for magnetic separation, arranged in cascade at a variable leaning angle and formed by at least one of high or low magnetic intensity magnets.
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International Classification(s)
- B03C:MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATE....
- C22B:PRODUCTION OR REFINING OF METALS
- B02C:CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERA....
- B03B:SEPARATING SOLID MATERIALS USING LIQUIDS OR USING ....
- B07B:SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENIN....
- B22F:WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES F....
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