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All Journal Science and Technology Indonesia Journal of Science and Applicative Technology Indonesian Mining Journal Jurnal Ilmu Fisika Jurnal Teori dan Aplikasi Fisika JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Logic : Jurnal Rancang Bangun Dan Teknologi Indonesian Mining Journal
Sipahutar, Wahyu Solafide
Program Studi Teknik Material, Institut Teknologi Sumatera, Lampung Selatan 35365, Indonesia
Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Journal : Indonesian Mining Journal

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DAMPAK PENINGKATAN PANAS DAN JENIS REDUKTAN TERHADAP SAPROLIT: STUDI PENDAHULUAN Bahfie, Fathan; Manaf, Azwar; Astuti, Widi; Nurjaman, Fajar; Prasetyo, Erik; Susanti, Diah; Sipahutar, Wahyu Solafide
Indonesian Mining Journal Vol 27 No 1 (2024): Indonesian Mining Journal, April 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol27.No1.2024.1533

Abstract

Indonesia significantly contributes to the global electric vehicle battery market due to its substantial medium- and low-grade nickel reserves. This study utilized saprolitic nickel ore from Halmahera, Maluku, Indonesia. However, the research on saprolite needs some improvements due to its complex mineral composition, which affected on the roasting process significantly. Therefore, a thorough understanding of the properties of laterite ores is critically important, particularly concerning laterite pre-reduction processes. The ore was finely sieved to a particle size of less than 100 mesh and then heated at temperatures of 250, 900, and 1150°C with the variation of reductant (anthracite and palm kernel charcoal). Extensive mineralogical analysis was conducted using X-ray diffraction (XRD), X-ray fluorescence (XRF), and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS). The analysis of saprolite showed that it contains about 1.82% nickel, 30.47% iron, 10-20% magnesium, 4.86% aluminum, and 8.1% silicon by weight. Its mineral composition is mainly 53.1% goethite, 38.3% lizardite, and 8.7% quartz. The study found that goethite in saprolite was transformed into hematite around 250°C. At 900°C, the forsterite was crystallized, and at 1150°C, the ferronickel was formed. The transformation of lizardite is important as it affected on nickel diffusion within the iron matrix, which impacted on the material's properties. A thermal upgrading method with reductants like anthracite and palm kernel charcoal was used at lower temperatures to enhance the properties of saprolite. These findings provided valuable insights into saprolite's mineralogical composition and behavior, potentially offering improvements in various industrial processes and applications.
Co-Authors Abdul Muhyi Anisa Fitri Anisa Fitri Anrokhi, Mohamad Samsul Astri Aulia Suwanda Azwar Manaf Bahfie, Fathan Diah Susanti Eka Nurfani Erik Prasetyo Fahmi, Achmad Gus Fajar Aditya Julyatmojo Fajar Nurjaman Farhan, Abi Hadi Teguh Yudistira, Hadi Teguh Hafid, Muhamad Haloho, Trivendi Hanifah, Istiara Rizqillah Kardo Rajagukguk, Kardo Muhamad Fatikul Arif Muhammad Saeful Fadlan Muhammad Yasin Siregar Muljadi Muljadi Okky Fajar Tri Maryana Pasaribu, Joshua Leonardo Phasa, Agita Prakoso, Ahmad Andryan Prasetya, Bayu Putra, Oji Kuncoro Darma Putri, Faiza Armalia Putrie, Gustya Salma Rianjanu, Aditya Rio Ardiansyah Murda Risa Nurin Baiti Riyan Ferdiyanto Sena Maulana Tarmizi Taher Widi Astuti William Wiliiam