About: Mixing of fine concentrated suspensions

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In the paper, the effect of particle concentration on critical impeller speed necessary for mixing of fine suspensions is presented. A single down pumping folded blade turbine with vessel to impeller diameter ratio D/d = 3 was used for mixing of a chalk suspensions. Measurements were carried out in cylindrical baffled vessel with diameter 300 mm. The mean volumetric diameter of particles was 4.6 μm and their mean volumetric concentration was changed in the range from 2.5 % to 40 %. The Bingham model was used for rheological behaviour description of chalk suspensions. A specific dimensionless criterion was used for calculation of critical speed. The criterion is proportional to the ratio of dynamic pressure to yield stress. The value of this criterion obtained for folded blade turbine was compared with corresponding values reported earlier for standard pitched blade turbine and also for three types of impellers produced by TECHMIX. There are also compared the different types of impellers according to their power consumption necessary for mixing of fine suspensions. For the comparison, a specific dimensionless criterion was proposed in the paper. In the paper, the effect of particle concentration on critical impeller speed necessary for mixing of fine suspensions is presented. A single down pumping folded blade turbine with vessel to impeller diameter ratio D/d = 3 was used for mixing of a chalk suspensions. Measurements were carried out in cylindrical baffled vessel with diameter 300 mm. The mean volumetric diameter of particles was 4.6 μm and their mean volumetric concentration was changed in the range from 2.5 % to 40 %. The Bingham model was used for rheological behaviour description of chalk suspensions. A specific dimensionless criterion was used for calculation of critical speed. The criterion is proportional to the ratio of dynamic pressure to yield stress. The value of this criterion obtained for folded blade turbine was compared with corresponding values reported earlier for standard pitched blade turbine and also for three types of impellers produced by TECHMIX. There are also compared the different types of impellers according to their power consumption necessary for mixing of fine suspensions. For the comparison, a specific dimensionless criterion was proposed in the paper. (en)
Title	Mixing of fine concentrated suspensions Mixing of fine concentrated suspensions (en)
skos:prefLabel	Mixing of fine concentrated suspensions Mixing of fine concentrated suspensions (en)
skos:notation	RIV/68407700:21220/14:00221158!RIV15-TA0-21220___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(TA02010243)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Rieger, František Moravec, Jiří
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta strojní
http://linked.open...dnocenehoVysledku	29572
http://linked.open...ai/riv/idVysledku	RIV/68407700:21220/14:00221158
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	mixing; suspension; bingham; impeller speed; folded blade (en)
http://linked.open.../riv/klicoveSlovo	bingham folded blade mixing impeller speed suspension
http://linked.open...ontrolniKodProRIV	[11C082E93484]
http://linked.open...in/vavai/riv/obor	JP
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Mixing Equipment for Sludge Processing
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Moravec, Jiří Rieger, František Ceres, Dorin
http://localhost/t...ganizacniJednotka	21220

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