Desain Pabrik Logam Tanah Jarang (Sc, Ce, dan Y) Dari Slag Nikel Menggunakan Karbon Aktif Termodifikasi

Arrazi, Thariq Mumtaz and Zhafira, Angelieta Ramadhani (2026) Desain Pabrik Logam Tanah Jarang (Sc, Ce, dan Y) Dari Slag Nikel Menggunakan Karbon Aktif Termodifikasi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Logam Tanah Jarang (LTJ) merupakan kelompok mineral strategis yang memegang peranan penting dalam berbagai industri teknolgi tinggi, termasuk elektronik, energi terbarukan, dan pertahanan. Meningkatnya permintaan LTJ global belum diimbangi dengan kapasitas produksi domestik Indonesia, sehingga ketergantungan terhadap impor yang didominasi oleh Cina. Di sisi lain, operasi pyrometallurgy nikel di Kawasan Industri PT Indonesia Morowali Industri Park (IMIP) menghasilkan slag nikel hingga 16 juta ton per tahun, yang selama ini belum dimanfaatkan secara optimal. Berdasarkan hal tersebut, dilakukan perancangan pabrik recovery LTJ dari slag nikel PT IMIP sebagai upaya hilirasi mineral strategis nasional. Pemilihan proses dilakukan menggunakan pendekatan Analytical Hierarchy Process (AHP) terhadap beberapa alternatif metode leaching dan pemurnian. Berdasarkan hasil evaluasi, metode direct acid leaching menggunakan HCl 3 M pada suhu 80oC dipilh sebagai metode ekstraksi dengan (nilai overall 0,448), sedangkan metode pemurnian menggunakan karbon aktif termodifikasi KMNO4 dipilih (nilai overall 0,448). Pemilihan lokasi pabrik di Provinsi Sulawesi Tegah juga dilakukan melalui AHP dengan mempertimbangkan aspek politik, ekonomi, lingkungan, dan infrastruktur. Proses produksi meliputi tajapan size reduction, direct acid leaching, Fe removal, adsorpsi desorpsi, presipitasi filtrasi dan kalsinasi untuk menghasilkan tigas produk utama yaitu CeO2, Sc2O3, dan Y2O3 dengan kemurnian 99%. Pabrik ini dirancang dengan kapasitas 700 ton/tahun dan hanya membutuhkan 6 juta ton tahun slag nikel. Hasil analisis ekonomi menunjukkan bahwa pabrik ini layak didirikan dengan NPV sebesar Rp 1.812.331.162.433, IRR 13,28%, POT 7 tahun, dengan BEP 40.39%.
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Rare Earth Elements (REE) are a group of strategic minerals that play an important role in various high-technology industries, including electronics, renewable energy, and defense. The increasing global demand for REE has not been matched by Indonesia's domestic production capacity, resulting in import dependency dominated by China. On the other hand, nickel pyrometallurgy operations at the PT Indonesia Morowali Industrial Park (IMIP) Industrial Zone generate up to 16 million tons of nickel slag per year, which has not yet been optimally utilized. Based on these circumstances, a REE recovery plant design from PT IMIP nickel slag was carried out as an effort toward the downstream processing of national strategic minerals. Process selection was carried out using the Analytical Hierarchy Process (AHP) approach across several alternative leaching and purification methods. Based on the evaluation results, the direct acid leaching method using 3 M HCl at 80°C was selected as the extraction method (overall value 0.448), while the purification method using KMnO₄-modified activated carbon was selected (overall value 0.448). Plant location selection in Central Sulawesi Province was also carried out through AHP considering political, economic, environmental, and infrastructural aspects. The production process includes size reduction, direct acid leaching, Fe removal, adsorption-desorption, precipitation, filtration, and calcination to produce three main products — CeO₂, Sc₂O₃, and Y₂O₃ — with 99% purity. The plant is designed with a capacity of 700 tons/year and requires only 6 million tons/year of nickel slag. The economic analysis results show that the plant is feasible with NPV of Rp 1,812,331,162,433, IRR 13.28%, POT 7 years, and BEP 40.39%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Direct Acid Leaching, Hilirisasi, Karbon Aktif Termodifikasi, Logam Tanah Jarang (LTJ), Slag Nikel Direct Acid Leaching, Downstream Processing, Modified Activated Carbon, Rare Earth Elements (REE), Nickel Slag
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction
Divisions:	Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis
Depositing User:	Angelieta Ramadhani Zhafira
Date Deposited:	29 Jul 2026 01:00
Last Modified:	29 Jul 2026 01:00
URI:	http://repository.its.ac.id/id/eprint/138682

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