MODEL OFF-LINE UNTUK SIMULASI PROSES PEMURNIAN BAJA DI VACUUM TANK DEGASSER (VTD) [Off-Line Model for Refining Steel Process Simulation in Vacuum Tank Degasser (VTD)

Zulfiadi Zulhan

Abstract


MODEL OFF-LINE UNTUK SIMULASI PROSES PEMURNIAN BAJA DI VACUUM TANK
DEGASSER (VTD). Teknologi vacuum tank degasser (VTD) telah diaplikasikan di industri baja untuk
menghasilkan produk baja yang berkualitas tinggi terutama untuk produk-produk yang mempunyai kandungan
gas-gas terlarut (hidrogen dan nitrogen) rendah, serta kandungan karbon dan sulfur sangat rendah. Model off-line
dikembangkan untuk mensimulasikan tahapan proses yang terjadi pada proses VTD yaitu mulai dari ladle tiba di
VTD, proses pemvakuman, flooding hingga baja selesai diperlakukan di VTD. Selain itu, model ini dapat
digunakan sebagai Level 2 pengontrolan proses yang dilakukan secara on-line. Perubahan temperatur, komposisi
karbon, gas-gas terlarut, sulfur, serta kemungkinan terjadinya boiling di VTD sebagai fungsi waktu dapat
diprediksi dengan model off-line ini.


Abstract


OFF-LINE MODEL FOR REFINING STEEL PROCESS SIMULATION IN VACUUM TANK DEGASSER
(VTD). Vacuum Tank Degasser (VTD) has been applied in industry to produce high quality steel especially for
steel products which have low hydrogen and nitrogen contents as well as ultra low carbon and sulphur contents.
An off-line model was developed and presented in this paper to simulate process steps to be performed on VTD
starting from ladle arriving treatment position, vacuum treatment, flooding till treatment end. Furthermore, this
off-line model could be used as Level 2 automation control system for operator guider. Steel temperature,
carbon, nitrogen, hydrogen and sulphur contents and the possibility for steel boiling during vacuum treatment
can be predicted using this model.

Keywords

VTD; Degassing; Dekarburisasi; Desulfurisasi; Waktu perlakuan; Boiling;VTD; Degassing; Decarburization; Desulphurization; Treatment time; Boiling

References

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