Dry dust control materials
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United States of America Patent
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Apr 24, 2007
Grant Date -
Sep 25, 2003
app pub date -
Feb 14, 2003
filing date -
Feb 15, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention discloses methods to reduce dusting in bulk materials, such as coal. The method includes mixing with the bulk material either a fraction of the bulk material having an electrostatic charge opposite that of the remainder of the bulk material or a heterologous charge control agent having an electrostatic charge opposite that of the bulk material. The attractive forces between the opposite electrostatic charges agglomerate dust particles to larger particles that quickly settle to control dusting. Also disclosed are materials produced by the methods described above.
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