Pengaruh Metode Pemberian Calcine terhadap Interaksi Awal pada Refraktori MgO Setelah Perlakuan Termal pada Temperatur 1200°C

Fitriasari, Putri (2026) Pengaruh Metode Pemberian Calcine terhadap Interaksi Awal pada Refraktori MgO Setelah Perlakuan Termal pada Temperatur 1200°C. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Interaksi awal antara calcine dan refraktori pada temperatur tinggi berperan dalam pembentukan fase reaksi pada daerah antarmuka yang dapat memengaruhi kualitas kontak antara kedua material. Penelitian ini bertujuan untuk menganalisis pengaruh metode pemberian calcine terhadap interaksi awal pada refraktori MgO setelah perlakuan termal pada temperatur 1200°C dengan holding time selama 4 jam. Metode aplikasi calcine yang digunakan meliputi metode powder dan slurry untuk membandingkan pengaruh metode pemberian calcine terhadap interaksi awal antara calcine dan refraktori, dengan sampel tanpa calcine sebagai kontrol. Karakterisasi dilakukan menggunakan X-Ray Fluorescence (XRF) untuk mengetahui komposisi kimia awal material, X-Ray Diffraction (XRD) untuk mengidentifikasi fase yang terbentuk, serta Scanning Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM EDX) untuk mengamati morfologi dan distribusi unsur pada daerah antarmuka. Hasil XRF menunjukkan bahwa refraktori didominasi oleh MgO sebesar 81,455%, sedangkan calcine didominasi oleh Fe₂O₃ sebesar 37,377% dan SiO₂ sebesar 33,221%. Pengamatan makroskopis menunjukkan bahwa metode slurry menghasilkan daya lekat calcine yang lebih baik dibandingkan metode powder. Hasil XRD menunjukkan bahwa fase utama pada seluruh sampel masih didominasi oleh periclase (MgO) dan spinel (MgAl₂O₄). Pada sampel metode slurry mulai teridentifikasi keberadaan fase minor magnesioferrite (MgFe₂O₄) dengan intensitas yang sangat rendah, sedangkan pada metode powder fase tersebut belum dapat dikonfirmasi berdasarkan hasil XRD. Fase magnesium silikat seperti forsterite (Mg₂SiO₄) juga tidak teridentifikasi pada kondisi penelitian ini. Hasil SEM-EDX menunjukkan bahwa distribusi unsur pada daerah antarmuka sampel metode slurry lebih merata dibandingkan metode powder sehingga menunjukkan kontak antarmuka yang lebih luas. Berdasarkan hasil penelitian, metode slurry memberikan kontak antarmuka yang lebih merata sehingga meningkatkan peluang terjadinya interaksi awal antara calcine dan refraktori berbasis MgO dibandingkan metode powder.
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The initial interaction between calcine and refractory materials at elevated temperatures plays an important role in the formation of reaction phases at the interface, which may influence the contact quality between the two materials. This study aimed to investigate the effect of the calcine application method on the initial interaction with MgO refractory after heat treatment at 1200°C for 4 hours. Two calcine application methods, namely the powder and slurry methods, were employed to compare their effects on the initial interaction between calcine and the refractory, while a specimen without calcine was used as the control. Material characterization was carried out using X-ray Fluorescence (XRF) to determine the initial chemical composition, X-ray Diffraction (XRD) to identify the crystalline phases, and Scanning Electron Microscopy Energy Dispersive X-ray Spectroscopy (SEM-EDX) to observe the morphology and elemental distribution at the interface. The XRF results showed that the refractory was primarily composed of 81.455 wt.% MgO, while the calcine mainly contained 37.377 wt.% Fe₂O₃ and 33.221 wt.% SiO₂. Macroscopic observations indicated that the slurry method provided better calcine adhesion than the powder method. XRD analysis revealed that the major phases in all specimens remained periclase (MgO) and spinel (MgAl₂O₄). In the slurry-treated specimen, a minor magnesioferrite (MgFe₂O₄) phase with very low intensity was identified, whereas its presence could not be confirmed in the powder-treated specimen based on the XRD results. Magnesium silicate phases, such as forsterite (Mg₂SiO₄), were not identified under the experimental conditions. SEM-EDX analysis showed that the elemental distribution at the interface was more homogeneous in the slurry-treated specimen than in the powder-treated specimen, indicating a larger interfacial contact area. Overall, the slurry method provided a more uniform interfacial contact, thereby increasing the likelihood of initial interaction between calcine and the MgO-based refractory compared with the powder method.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Calcine, Interaksi Awal, Metode Pemberian, Refraktori MgO Calcine, Initial Interaction, Application Method, MgO Refractory
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN687 Electric furnaces.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Putri Fitriasari
Date Deposited:	26 Jul 2026 05:16
Last Modified:	26 Jul 2026 05:16
URI:	http://repository.its.ac.id/id/eprint/137415

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