Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Patent
1994-10-03
1996-05-07
Silbaugh, Jan H.
Cleaning and liquid contact with solids
Processes
Using solid work treating agents
134 6, 134 10, 134 13, 134 40, B08B 700, B08B 704
Patent
active
055142184
ABSTRACT:
Contaminated material is decontaminated using a process in which fractions of the contaminated material are sequentially exposed to a polymeric sorbent to enhance removal of contaminants. The contaminated material is first converted into a slurry which may be divided into a sand slurry and a slimes slurry. A quantity of large polymeric sorbent particles are first contacted with the slimes slurry and then separated and contacted with the sand slurry. The sorbent particles are then separated from the sand slurry which is exposed to the action of a flotation cell. The concentrate removed from the flotation cell is then exposed to the polymeric sorbent particles. At least a portion of the sorbent particles are then thermally regenerated and recycled. One preferred material for the polymeric sorbent is nitrile-butadiene rubber.
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El-Shoubary Youssef
Woodmansee Donald E.
General Electric Company
Gray Robin S.
Silbaugh Jan H.
Webb II Paul R.
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