Purwanto, Kaisar Akbar (2022) Analisis Pengaruh Variasi Kuat Arus Listrik Electric Arc Furnace Pada Proses Smelting Pasir Monasit Terhadap Komposisi Senyawa Dan Grade Tho2. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pembangkit Listrik Tenaga Nuklir (PLTN) Indonesia ditargetkan akan mulai beroperasi pada tahun 2027. Indonesia memiliki kandungan torium sebesar 130.974 ton. Bahkan torium memiliki sifat yang lebih baik daripada uranium. Salah satu mineral yang mengandung torium dan terletak di Indonesia adalah pasir monasit di Bangka Belitung. Tujuan penelitian ini adalah untuk menganalisis pengaruh variasi kuat arus listrik Electric Arc Furnace (EAF) pada proses smelting pasir monasit terhadap senyawa yang terbentuk, komposisi senyawa utama beserta recovery, dan grade ThO2. Smelting dilakukan pada temperatur 1850oC selama 287 detik dan tegangan sebesar 40 V. Variasi kuat arus listrik yang digunakan adalah 50 A, 60 A, 70 A, 80 A, dan 90 A. Bahan yang digunakan terdiri atas pasir monasit sebagai material feed, CaCO3 sebagai aditif, serbuk karbon sebagai reduktor, SiO2 sebagai flux. Setelah smelting, dilakukan karakterisasi melalui pengujian X-Ray Diffraction (XRD) untuk mengetahui senyawa yang terkandung dan X-Ray Fluorosence (XRF) untuk mengetahui komposisi senyawa yang terkandung. Melalui analisis hasil pengujian XRD terdapat senyawa baru, yaitu calcium titanium oxide (CaTiO3) pada semua variasi, hatrurite (Ca3SiO5) hanya pada 50 A dan 60 A, dan fayalite (Fe2SiO4) pada semua variasi, kecuali pada 50 A. Kemudian, melalui analisis hasil pengujian XRF didapatkan Fe2O3 dengan grade terendah (10,95%) pada 70 A dan recovery terendah (10,54%) pada 50 A, serta TiO2 dengan grade terendah (22,95%) dan recovery terendah (6,47%) pada 50 A. Sementara itu, ThO2 dengan grade tertinggi (0,45%) dan recovery tertinggi (38,29%) didapatkan pada 80 A. Melalui perhitungan separation efficiency (S.E.) didapatkan kuat arus listrik yang paling efisien adalah 80 A, dimana S.E. Fe2O3, TiO2, dan ThO2 berturut-turut sebesar 11,62%, 4,02%, dan 38,19%. Meskipun begitu, pasir monasit hasil smelting masih memiliki banyak sekali senyawa pengotor. Oleh karena itu, diperlukan metode ekstraksi ThO2 lebih lanjut agar lebih optimal, contohnya menggunakan metode hidrometalurgi.
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Indonesia's nuclear power plant (PLTN) is targeted to start operating in 2027. Indonesia contains 130,974 tons of thorium. Even thorium has better properties than uranium. One of the minerals containing thorium and located in Indonesia is monazite sand in Bangka Belitung. The purpose of this study was to analyze the effect of variations in Electric Arc Furnace (EAF) electric current on the monazite sand smelting process on the compounds formed, the composition of the main compounds and their recovery, and the grade of ThO2. Smelting was carried out at a temperature of 1850oC for 287 seconds and a voltage of 40 V. The variations of the electric current used were 50 A, 60 A, 70 A, 80 A, and 90 A. The materials used consisted of monazite sand as feed material, CaCO3 as additive material. additive, carbon powder as reducing agent, SiO2 as flux. After smelting, characterization was carried out through X-Ray Diffraction (XRD) testing to determine the compounds contained and X-Ray Fluorosence (XRF) to determine the composition of the compounds contained. Through the analysis of the XRD test results there were new compounds, namely calcium titanium oxide (CaTiO3) in all variations, hatrurite (Ca3SiO5) only at 50 A and 60 A, and fayalite (Fe2SiO4) in all variations, except at 50 A. Then, through analysis XRF test results obtained Fe2O3 with the lowest grade (10.95%) at 70 A and the lowest recovery (10.54%) at 50 A, and TiO2 with the lowest grade (22.95%) and the lowest recovery (6.47%). at 50 A. Meanwhile, ThO2 with the highest grade (0.45%) and the highest recovery (38.29%) was found at 80 A. Through the calculation of separation efficiency (S.E.) the most efficient electric current was found to be 80 A, where S.E. Fe2O3, TiO2, and ThO2 were 11.62%, 4.02%, and 38.19%, respectively. Even so, the smelted monazite sand still contains a lot of impurities. Therefore, further ThO2 extraction methods are needed to be more optimal, for example using the hydrometallurgical method.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSMt 669.142 4 Pur a-1 2022 |
| Uncontrolled Keywords: | Kuat Arus Listrik, Pasir Monasit, Smelting, ThO2, Current, Monazite Sand, Smelting |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN687 Electric furnaces. |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 13 Dec 2024 07:11 |
| Last Modified: | 13 Dec 2024 07:11 |
| URI: | http://repository.its.ac.id/id/eprint/115964 |
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