Analisis Pengaruh Penambahan CaO dalam Proses Smelting Pasir Monasit menggunakan Electric Arc Furnace terhadap Komposisi Senyawa dan Grade ThO2

Wijaya, Rio Candra (2022) Analisis Pengaruh Penambahan CaO dalam Proses Smelting Pasir Monasit menggunakan Electric Arc Furnace terhadap Komposisi Senyawa dan Grade ThO2. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pembangkit Listrik Tenaga Torium (PLTT) dapat dijadikan solusi untuk keberlanjutan sumber energi listrik di masa mendatang. Penggunaan torium sebagai sumber energi nuklir memiliki kelebihan karena kelimpahannya di alam serta keamanannya dibandingkan uranium. Monasit merupakan mineral fosfat yang memiliki kandungan torium tinggi. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan CaO sebagai fluks dalam proses smelting pasir monasit menggunakan electric arc furnace terhadap senyawa yang terbentuk pada produk, komposisi senyawa utama, grade ThO2, dan recovery senyawa utama. Proses smelting dilakukan pada temperatur 1850OC selama 4 menit dengan menambahkan pasir monasit sebagai mineral utama, CaCO3 sebagai aditif, serbuk karbon sebagai reduktor, dan CaO sebagai fluks dengan variasi penambahan 0%, 3%, 6%, dan 9% massa total, kemudian produk dilakukan karakterisasi XRD dan XRF. Berdasarkan karakterisasi produk hasil smelting, didapatkan bahwa terbentuk senyawa baru berupa CaTiO3, Ca2Fe2O5, FeTiO3 dan Fe2TiO5 pada semua variasi penambahan CaO. Kadar ThO2 tertinggi diperoleh pada penambahan CaO 6% dengan nilai 0,42%. Recovery ThO2 tertinggi diperoleh pada penambahan CaO 3% dengan nilai 88,92%. Kadar (4,42%) Fe2O3 terendah diperoleh dengan penambahan CaO 6% dan recovery (5,78%) Fe2O3 diperoleh dengan penambahan CaO 9%. Sementara itu, kadar (43,1%) TiO2 terendah diperoleh pada smelting tanpa fluks dan recovery (13,45%) TiO2 diperoleh dengan penambahan CaO 9%. Melalui perhitungan separation efficiency, didapatkan bahwa penambahan fluks CaO paling optimal adalah 6%. Pada kondisi tersebut didapatkan kadar ThO2 tertinggi dan kadar Fe2O3 terendah. Namun kadar TiO2 yang dihasilkan masih tinggi sehingga perlu dilakukan proses pemisahan lebih lanjut untuk memaksimalkan produk yang diinginkan.
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The Thorium Power Plant (PLTT) can be used as a solution for the sustainability of electrical energy sources in the future. The use of thorium as a source of nuclear energy has advantages due to its abundance in nature and its safety compared to uranium. Monasite is a phosphate mineral that has a high thorium content. This study aims to analyze the effect of adding CaO as a flux in the monazite sand smelting process using an electric arc furnace on the compounds formed in the product, the composition of the main compounds, the grade of ThO2, and the recovery of the main compounds. The smelting process was carried out at a temperature of 1850o C for 4 minutes by adding monazite sand as the main mineral, CaCO3 as an additive, carbon powder as a reducing agent, and CaO as a flux with variations in the addition of 0%, 3%, 6%, and 9% total mass. , then the product was characterized by XRD and XRF. Based on the characterization of the smelted product, it was found that new compounds were formed in the form of CaTiO3, Ca2Fe2O5, FeTiO3, dan Fe2TiO5 in all variations of the addition of CaO. The highest grade of ThO2 obtained in the addition of CaO 6% with a value of 0.42%. The highest recovery of ThO2 obtained with the addition of 3% CaO with a value of 88.92%. The lower grade (4.42%) of Fe2O3 obtained by adding 6% CaO and recovery (5.78%) of Fe2O3 was obtained by adding 9% CaO. Meanwhile, the lower grade (43.1%) of TiO2 was obtained in smelting without flux and recovery (13.45%) of TiO2 was obtained by the addition of 9% CaO. Through the calculation of separation efficiency, it was found that the most optimal addition of CaO flux was 6%. In these conditions obtained the highest grade of ThO2 and the lower grade of Fe2O3. However, the levels of TiO2 produced is still high so we need a further separation process to maximize the desired product.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	CaO, Electric Arc Furnace, Fluks, Monasit, ThO2, CaO, Electric Arc Furnace, Flux, Monazite, ThO2.
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:	Rio Candra Wijaya
Date Deposited:	06 Feb 2022 09:48
Last Modified:	06 Feb 2022 09:48
URI:	http://repository.its.ac.id/id/eprint/92857

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