Effects on expression-rate increase of solid-liquid mixture with inserted strings.

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概要

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• To improve deliquoring rates in batch-type expression equipment, expression experiments of thickend slurry and semi-solid materials were carried out at constant expression pressure by using a compression-permeability cell equipped with vertical, permeable strings. The experiments showed that filtration with strings can be represented by Ruth''s filtration equation and the successive consolidation processes by the consolidation equation based upon the Terzaghi-Voigt model. Consequently, the experimental values of filtration coefficient Ks and consolidation coefficient (Ce)s can be determined by using experimental data. The string effects on filtration and consolidation rates are evaluated in terms of the increase in K and Ce values. It has become apparent that the effects depend heavily on the ratio of radial to vertical maximum drainage distance iR/L0 and the increase in deliquoring rates is remarkable when iR/L0≤1.0.

• 公益社団法人 化学工学会の論文

著者

• NOGUCHI TETSUO

  Department of Chemical Engineering, Nagoya University

関連論文

• Industrial expression equation for semisolid materials of solid-liquid mixture under constant pressure.
• Effects on expression-rate increase of solid-liquid mixture with inserted strings.

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