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    Chemical-mechanical dewatering process

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    5670056.pdf (768.1Kb)
    Downloads: 249
    Publication Date
    1997-09-23
    Filing Date
    1995-10-06
    Inventor
    Yoon, Roe-Hoan
    Basilio, Cesar I.
    Metadata
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    Abstract
    Small, wet particulate material is effectively dried by adding a hydrophobizing agent to coat the surfaces of the particulates, and then mechanically removing water droplets from the surfaces of the particulates. Once on the surface of the particulates, the hydrophobizing reagent makes the particulates relatively more hydrophobic and increases the water contact angle on the particulates. The moisture content of the particulate material can easily be reduced to levels below 20%, below 10%, and even below 5%. The process can be used to dewater a wide variety of constituents including coal particles, clays, sulfides, phosphorous compounds, minerals, metals, waste sludge, etc. Particularly preferred hydrophobizing reagents include mono unsaturated fatty esters and polysiloxane polymers.
    Assignee
    Virginia Tech Intellectual Properties, Inc.
    Patent Number
    5670056
    Application Number
    8540178
    Source URL
    http://pimg-fpiw.uspto.gov/fdd/56/700/056/0.pdf
    Primary/U.S. Class
    209/5
    Other/U.S. Class
    210/728
    210/729
    210/732
    210/770
    210/771
    210/778
    44/626
    CPC Class
    B01D37/03
    F26B5/005
    Patent Type
    utility
    URI
    http://hdl.handle.net/10919/72346
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    • Virginia Tech Patents [688]

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