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patent
Polymeric flocculant for removal of solids from aqueous suspensions or sludges containing coal
1991
The solids are removed from an aq. suspension contg. 4-12 g coal fines/L using a suspension of a water-sol., high-mol. wt., highly crosslinked copolymer of di-Me diallyl ammonium chloride and 0.1-3 mol.% of a crosslinked comonomer, optionally mixed with anionic or nonionic polyacrylamide. The suspension is used at a rate of 0.1-4 mg/L at 276-310 K to form a floc which can be sepd. by known means. The floc is suitable for use in briquet manuf. [on SciFinder (R)]
Type
patent
EPO Family ID
5582914
Inventors
Jaeger, Werner
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•
Hahn, Mathias
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Schoenherr, Dieter
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Froemling, Ulrich
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Munick, Heinz
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Jobmann, Monika
•
Gohlke, Ulrich
Note
Alternative title(s) : (de) Verfahren zur abtrennung von feststoffen aus kohlehaltigen abwaessern
EPFL units
Patent number | Country code | Kind code | Date issued |
DD292641 | |||
Available on Infoscience
February 27, 2006
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