Characterisation of the wall-slip during extrusion of heavy-clay products

2nd International Conference on Rheology and Modeling of Materials

Kocserha, I.^1 ; Gömze, A.L.^1 ; Kulkov, S.^2 ; Kalatur, E.^2 ; Buyakova, S.P.^2 ; Géber, R.^1 ; Buzimov, A.Y.^2

Institute of Ceramic and Polymer Engineering, Faculty of Materials Science, University of Miskolc, Hungary^1

Tomsk State University, Institute of Strength Physics and Materials Science SB RAS, Tomsk Polytechnik University, Russia^2

关键词: Capillary rheometer;    Clay fractions;    Different water contents;    Extrusion speed;    Granulometries;    Heavy clay products;    Rotational viscosimeter;    Thickness value;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/790/1/012013/pdf
DOI  :  10.1088/1742-6596/790/1/012013

来源: IOP

【 摘 要 】

During extrusion through the extrusion die, heavy-clay compounds are usually show plug flow with extensive slip at the wall of the die. In this study, the viscosity and the thickness of the slip layer were investigated. For the examination a brick-clay from Malyi (Hungary) deposit was applied as a raw material. The clay was characterised by XRPD, BET, SEM and granulometry. As the slip layer consists of suspension of the fine clay fraction so the clay minerals content of the clay (d