Measurement of adhesion strengths and energy between calcium carbonate cake and filter cloth | Zendy

Pascal Ginisty | Zendy; B. Legoff | Zendy; Jérémy Olivier | Zendy; Jean Vaxelaire | Zendy; Hervé Tabuteau | Zendy; Jeverton Laureano Paixão | Zendy

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Measurement of adhesion strengths and energy between calcium carbonate cake and filter cloth

Author(s) -

Pascal Ginisty,

B. Legoff,

Jérémy Olivier,

Jean Vaxelaire,

Hervé Tabuteau,

Jeverton Laureano Paixão

Publication year - 2017

Publication title -

water practice and technology

Language(s) - English

Resource type - Journals

ISSN - 1751-231X

DOI - 10.2166/wpt.2017.003

Subject(s) - filter cake , calcium carbonate , filter (signal processing) , materials science , shearing (physics) , carbonate , composite material , pulp and paper industry , process engineering , environmental science , engineering , environmental engineering , metallurgy , electrical engineering

International audienceVarious devices in liquid-solid separation require mechanical cake discharge using different technologies. An incomplete cake discharge causes yield losses, cycle time increase, irregular cake formation, high mechanical constraints which decrease medium life time, excess consumption of cleaning liquors... Currently, cake discharge is only assessed qualitatively by observations of filter cloth after discharge or quantitatively by weighing recovered solids. A prototype has been developed to carry out reliable and repeatable measurements by removing filter cloth from filter cake by shearing. This study presents results of experiments performed with calcium carbonate (which forms sticky cakes) and discusses the conditions of cake formation and cake detachment from filter cloth. It highlights the role of two main parameters: filter cloth characteristics and pressure

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