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All Journal Jurnal Ilmu Dasar Jurnal Sains Materi Indonesia Jurnal Kimia dan Kemasan MESIN Science and Technology Indonesia Metalurgi Indonesian Physical Review Jurnal Riset Sains dan Kimia Terapan Jurnal Polimesin Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Wisnu Ari Adi
Pusat Teknologi Bahan Industri Nuklir, BATAN Kawasan Puspiptek, Serpong 15314, Tangerang Selatan
Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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Hydrometallurgical extraction of TiO2 from iron sand for industrial raw material Sukmara, Sony; Manaf, Azwar; Adi, Wisnu Ari; Putra, Adi Ganda
Jurnal Polimesin Vol 23, No 5 (2025): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i5.7751

Abstract

Titanium dioxide (TiO2) is an essential raw material widely used in Indonesia’s medical, cosmetic, paint, cement, aerospace, and defense industries. Despite its industrial importance, domestic TiO2 production remains limited, resulting in continued dependence on imports. Meanwhile, Indonesia possesses abundant iron sand resources that have not been fully utilized as potential raw materials for TiO2 extraction. This study aims to extract titanium dioxide from iron sand obtained from the southern coast of Lebak Regency, Banten Province. The extraction process began with the preparation of iron sand through washing, drying, and magnetic separation to isolate titanium-rich minerals, mainly ilmenite (FeTiO3) and titanomagnetite (Fe2TiO4). The ilmenite concentrate was leached using sulfuric acid (H2SO4, 96%) at 150–200 °C, forming titanium oxysulfate (TiOSO4) and ferrous sulfate (FeSO4). The solution was filtered, and titanium was precipitated as hydrated titanium dioxide (TiO2•H2O) through neutralization. The precipitate was washed, dried, and calcined at 500 °C to obtain anatase-phase TiO2. X-ray diffraction (XRD) analysis revealed dominant mineral phases of ilmenite (98.63%) and titanomagnetite (90.56%), while X-ray fluorescence (XRF) showed titanium contents of 22.72% in FeTiO3 and 20.45% in Fe2TiO4. The resulting TiO2 exhibited an anatase phase with 98.7% purity. The findings confirm that Lebak’s southern coastal iron sand is rich in titanium-bearing minerals, demonstrating its potential as a sustainable raw material for domestic TiO2 production. This study provides a preliminary foundation for optimizing the extraction process to enhance yield and support local industrial development.
THE EFFECT OF BARIUM SUBSTITUTION WITH COMBINATIONS OF RARE EARTH ON PERMANENT MAGNETIC SURFACE MORPHOLOGY BASED ON BARIUM HEXAFERRITE Adnyana, I Gusti Agung Putra; Suarbawa, Komang Ngurah; Nurmalasari, Ni Putu Yuni; Adi, Wisnu Ari
Indonesian Physical Review Vol. 7 No. 2 (2024)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v7i2.300

Abstract

The development of hard magnets today is progressing very rapidly. Developing hard magnets based on rare earth metals becomes a severe problem when the raw materials are not readily available. The chosen solution is to replace oxide-based permanent magnets with small amounts of rare earth metals substituted to improve their magnetic properties. This study synthesized a permanent magnet oxide based on barium hexaferrite doped with lanthanum and cerium atoms. In the synthesis of this material, a mechanical wet milling technique is used to obtain a single-phase permanent magnetic Ba1-β-γLaβCeγFe12O19 system with composition (β = 0 - 0.5 and γ = 0 - 0.1). The precursors are weighted according to their stoichiometric composition. Each mixed composition was milled by high energy milling (PW 1000 in the mixer/mill) at a milling speed of 1000 rpm using steel balls with an average diameter of 12 mm. Grinding conditions included a ball-to-powder weight ratio of 2:1, milling time 5 hours, then compacted with 7000 Psi pressure and sintered at 1200oC for 2 hours. The surface morphology and microstructure of the resulting sample particles were observed using scanning electron microscopy (SEM) with the SEM JEOL JED 305 brand. The characterization results show that the particles are hexagonally homogeneous in shape with particle sizes in the range of 1000-2000 nm for β = 0 and γ = 0 (without doping). In general, the four samples with varying concentrations of doping ions La3+ and Ce4+ showed homogeneous hexagonal structures but smaller particle sizes than pure barium hexaferrite. The sample particle sizes ranged from 500-1000 nm for β = 0.02 and 300-1000 nm for β = 0.04.
Studi Fasa dan Sifat Termal Lantanum Oksida Berbasis Monasit Dewi, Sari Hasnah; Adi, Wisnu Ari; Suyanti
EKSPLORIUM Vol. 40 No. 2 (2019): NOVEMBER 2019
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2019.40.2.5646

Abstract

Rare earth elements (REE) in Indonesia have great potency, mainly from monazite mineral. Monazite is a combination of REE-U/Th-phosphate elements which is associated with tin deposit and radioactive elements. Through BATAN incorporated program, monazite mineral is processed to become more economically valuable materials. Lanthanum (La) is a metal element, part of REE group, which has excellent properties for pigment and electromagnetic absorber. The purpose of this study is to obtain information related to the effect of calcination in high temperature on the product of monazite’s REE hydroxide (RE(OH)3) processing pilot plant, specific on La2(C4O4)3 for Certified Reference Material (CRM) La­2O3 making. The weighed material is calcined on combustion boat by using a furnace at heating temperature of 1,000 OC and 1,300 OC. Thermal decomposition is analyzed by using Thermogravimetric analysis (TGA). Material phase formation is analyzed by using X-Ray Diffraction (XRD) method. XRD analysis shows the material in final phase has been transform to 28.76 % La2O3 and 71.24 % La(OH)3.
Co-Authors Adi Ganda Putra Adnyana, I Gusti Agung Putra Azwar Manaf Budhy Kurniawan Deswita Deswita Didin S. Winatapura Didin Sahidin Winatapura Engkir Sukirman Fauzy, Rizky Grace Tj. Sulungbudi Jalut, Laura Laudensia Senly Januar Widakdo Komang Ngurah Suarbawa Lestari, Hilda Puspa Mashadi Mashadi Masno Ginting Mulyawan, Ade Naibaho, Marzuki Nehan, Phahul Zhemas Zul Novita Nurmalasari, Ni Putu Yuni Nurmaya Arofah Pius Sebleku Rachmawati, Indri Ramlan Sari Hasnah Dewi Siti Wardiyati Sukarasa, I Ketut Sukmara, Sony Sulistioso Giat Sukaryo, Sulistioso Giat Suyanti Taryana, Yana Vitayaya, Okvarahireka Wardani, Ni Nyoman Susi Kesuma yunasfi yunasfi Yunasfi, Yunasfi - Yusmaniar, Y. Yustinus Purwamargapratala