2024-05-28T23:24:33Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00030780
2023-01-16T05:13:43Z
320:2524:2544:2556
Theoretical and experimental studies in expression
Shirato, Mompei
102078
Murase, Toshiro
102079
Iwata, Masashi
102080
1986-10-31
The basic analytical methods for expression, the separation of liquid from solid-liquid systems by compression, are presented from the viewpoint of the flow through compressible porous media. The mathematical models of the Terzaghi model, the Terzaghi-Voigt combined model and a simplified semi-theoretical equation are summarized. On the basis of the theory, constant-pressure expression of both semisolid materials and slurries, and two-dimensional expression on a tubular filter element, are discussed. It is also shown that the constant-rate expression process is well described from calculations based upon constant-pressure expression data. Internal mechanisms of settling sediments are mathematically analysed on the basis of consolidation theory, and the basic differential equations for settling of concentrated suspensions are presented. The hydraulic expression phenomenon in ordinary filter press operation, which depends on a change in filtrate flow pattern, is also described and analyzed.
departmental bulletin paper
Faculty of Engineering, Nagoya University
1986-10-31
Memoirs of the Faculty of Engineering, Nagoya University
1
38
42
85
0027-7657
eng