Abstract
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<2μm) was separated by the help of sedimentation. The viscosity of suspension with different water content was measured by means of rotational viscosimeter. The thickness of the slip layer was calculated from the measured viscosity and other data obtained from an earlier study with capillary rheometer. The calculated thickness value showed a tendency to reach a limit value by increasing the extrusion speed.
| Original language | English |
|---|---|
| Article number | 012013 |
| Journal | Journal of Physics: Conference Series |
| Volume | 790 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 16 Feb 2017 |
| Event | 2nd International Conference on Rheology and Modeling of Materials, IC-RMM 2015 - Miskolc-Lillafured, Hungary Duration: 5 Oct 2015 → 9 Oct 2015 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Characterisation of the wall-slip during extrusion of heavy-clay products. / Kocserha, I.; Gömze, A. L.; Kulkov, S.; Kalatur, E.; Buyakova, S. P.; Géber, R.; Buzimov, A. Y.
In: Journal of Physics: Conference Series, Vol. 790, No. 1, 012013, 16.02.2017.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Characterisation of the wall-slip during extrusion of heavy-clay products
AU - Kocserha, I.
AU - Gömze, A. L.
AU - Kulkov, S.
AU - Kalatur, E.
AU - Buyakova, S. P.
AU - Géber, R.
AU - Buzimov, A. Y.
PY - 2017/2/16
Y1 - 2017/2/16
N2 - 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<2μm) was separated by the help of sedimentation. The viscosity of suspension with different water content was measured by means of rotational viscosimeter. The thickness of the slip layer was calculated from the measured viscosity and other data obtained from an earlier study with capillary rheometer. The calculated thickness value showed a tendency to reach a limit value by increasing the extrusion speed.
AB - 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<2μm) was separated by the help of sedimentation. The viscosity of suspension with different water content was measured by means of rotational viscosimeter. The thickness of the slip layer was calculated from the measured viscosity and other data obtained from an earlier study with capillary rheometer. The calculated thickness value showed a tendency to reach a limit value by increasing the extrusion speed.
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U2 - 10.1088/1742-6596/790/1/012013
DO - 10.1088/1742-6596/790/1/012013
M3 - Conference article
VL - 790
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012013
ER -