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Arief Syahlan
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Mechanical Engineering

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MODEL MATEMATIS DAN SIMULASI PERPINDAHAN PANAS PROSES PENGECORAN KONTINYU BAJA SLAB Prihadi Setyo Darmanto; Arief Syahlan; Koesnohadi Koesnohadi
Mesin Vol. 17 No. 2 (2002)
Publisher : Mesin

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This paper presents mathematical model and numerical simulation using CFD software FLUENT 5.4 applied on continuous casting process of steel slab. The distribution of temperature of the steel slab since it exits the mould till straightening region was evaluated. The result of numerical evaluation was also compared to the measurement temperature taken at some selected points. The comparison showed that there was a good agreement between the numerical result and the measurement data. The percentage of both liquid and solid phases along the slab was also simulated. It seems that the simulation of solid phase growth could be used as a method for determining the cross section position where the solidification ceases.
MODIFIKASI TOP CYCLONE UNTUK MENINGKATKAN KINERJA SUATU PABRIK SEMEN Prihadi Setyo Darmanto; Arief Syahlan
Mesin Vol. 21 No. 1 (2006)
Publisher : Mesin

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Clinker production of a cement plant can be increased by rising clinker to kiln feed ratio-CKFR. One of the methods for increasing CKFR is by improving the separating efficiency of the top cyclone. The increase of separating efficiency of the top cyclone causes not only the increase of production, but is also followed by the lowering of specific heat consumption and percentage of ash in the coal because the exit gas from thetop cyclone is normally used for coal drying. This paper presents a simple and cheap modification of the top cyclone that has been applied in a Indonesian cement plant. The results show that the proposed modification can simultaneously increase clinker production, lower both of specific heat consumption and percentage of ash in the fine coal that used as the main fuel of the plant.
Co-Authors Koesnohadi Koesnohadi Prihadi Setyo Darmanto