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Press release
11.08.2011  |  7441x
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The similarities of Texas Tea and milk, ink-jet inks and ceramics

Review of Workshop Dispersion Analysis 2011 and Invitation to International Workshop 2012

The »International Workshop Dispersion Analysis« was organized and sponsored by LUM GmbH.
The first lecture was given by John Tobin, from the Irish Agriculture and Food Development Authority.
Markus Feist from the Karlsruhe Institute of Technology, Germany, spoke about the sedimentation of unsteady particle systems. Comparison between conventional sedimentation equipment and LUMiReader® results confirmed the agreement between both sedimentation velocity, highlighting the LUMiReader® advantage compared with visual observation by naked eye.
Conny Roedel from the IKTS Dresden, Germany, spoke about concentrated dispersion analysis in ceramic processing. He presented examinations of qualitative and quantitative effects of commercial available additives (dispersant, binder, lubricant) on the properties of alumina suspensions, which were obtained using direct and accelerated stability measurement. This method provides more comprehensive results in contrast to zeta-potential measurement. The LUMiSizer® results are subject to a publication in a peer-review journal by Roedel et al.
Maksym Loginov, who presented a teamwork of scientists from Compiègne University of Technology, France and the Institute of Biocolloidal Chemistry, Kiev, Ukraine, posed the question ‘Can we use the LUMiSizer® to estimate filterability of concentrated suspensions?’ Two methods for the evaluation were proposed based on the analysis of experimental data, the dependence of the sample height on the centrifugation time, and the dependence of the ultimate sample height on centrifugal acceleration. The values of specific cake resistance estimated from centrifugal consolidation for both suspension types agreed with the values estimated from dead-end filtration tests (especially, in the low pressure region ps < 20 kPa). This opens a new application field for LUMiFuge® and LUMiSizer®, the prediction of dispersion filterability. More speakers addressed differnt applications.
All released workshop papers are available for free download from the information portal www.dispersion-letters.com.
The next workshop will be organized in Berlin from 1-2 March 2012.
Registration information for 2012 can be downloaded from
http://www.lum-gmbh.com/pages/news/images/International_Workshop_Dispersion_Analysis_LUM_2012.pdf

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