DEWATERING OF THICK FINE TAILINGS WITH GAS INJECTION AND FLOCCULATION
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United States of America Patent
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Issued Date -
Jul 23, 2015
app pub date -
Jun 21, 2013
filing date -
Jun 21, 2012
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Abstract
Techniques for injecting gas, such as compressed air, into thick fine tailings can promote water release or flocculant dosage reduction and thereby ameliorate dewatering operations of the thick fine tailings. Gas injection may be done before, during or after addition of a polymer flocculant into the thick fine tailings. Gas injection may be done in an amount, pressure or with gas bubbles so as to reduce the flocculant dosage requirements or increase the water release from released thick fine tailings.
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