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All Journal Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Jurnal Sains Materi Indonesia IPTEK The Journal for Technology and Science JURNAL FISIKA Sainteknol : Jurnal Sains dan Teknologi Jurnal Spektra Jurnal Keramik dan Gelas Indonesia Omega: Jurnal Fisika dan Pendidikan Fisika Jurnal Teknologi Mineral dan Batubara INDONESIAN JOURNAL OF APPLIED PHYSICS Indonesian Mining Journal Indonesian Journal of Chemistry Jurnal Elektronika dan Telekomunikasi Jurnal Teknik Metalurgi Indonesian Physical Review Jurnal Riset Teknologi Industri Jurnal Keramik dan Gelas Indonesia Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK) Makara Journal of Science Makara Journal of Technology Jurnal Teknologi Mineral dan Batubara Jurnal Polimesin Jurnal Sains Materi Indonesia Indonesian Mining Journal
Azwar Manaf
Departemen FMIPA, Universitas Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Journal : INDONESIAN JOURNAL OF APPLIED PHYSICS

 1 
Perolehan Tio2 Dari Iron Ore Mengandung Titanium Melalui Proses Reduksi Karbon Dan Pelarutan Asam Elda Rayhana; Azwar Manaf
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v2i02.1288

Abstract

REDUCTION AND LEACHING PROCESSES. Indonesia has a large source of iron ore which is quite tempting for the purposes of exploitation in form of raw materials as well as for the production of pig iron. However, not all sources of iron ore are proved useful since not only because the present of deposit is scattere dinamounts of less significant but also because it contains element of tin oxide compounds with iron like ilmenite or FeTiO3. However,ilmenite can actually be used as a source of titanium metal which is much more valuable than Fe it self. In order to recover the Ti from their respective compound it is required the release of strong bonds between the atoms in the compound. This paper reports the recovery of Ti oxide of ilmenite containing iron ore which was obtained through a combination of carbon reduction and acid leaching processes. Carbon reduction of iron ore was carried out through mechanical milling between iron ore and carbon with a ratio of 1:1. This was successively followed by a sintering at a temperature of 1000 oC employing a heating rate of 10 ° C/min for 0-3 hours. The reduction process has resulted in the formation of 27.83wt% TiO2. In order to improve the recovery level of TiO2, further reduction process was conducted through an HCl leaching. This successive stage produced fine powders in the form of deposits. Based on our quantitative analysis, the recovery of TiO2 increased to a level of 73.73%.
Pengaruh Substitusi Ion Mn dan Ion Co Serta Ion Ti pada Pembentukan Fasa dan Sifat Magnetik Barium Hexaferrite BaFe9(MnCo)1,5Ti1,5O19 Disintesis Melalui Rute Metallurgi Serbuk Priyono P; Eddy Siradj; Azwar Manaf
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i01.1310

Abstract

Barium ferrite with hexagonal molecular BaFe12O19 is well-known for its high performance permanent magnetic and good mechanical properties and attracted attention of researchers for a long time. The hexaferrite powders were produced according to a conventional ceramic process with powder metallurgy method. Moreover, the powders were analyzed by X-ray diffraction, to detect the presence of secondary phases. The magnetic properties of the sampleswere measured at room temperature using Permeagraph with a maximum applied field of 1.5 T. The calculation of the lattice parameter on conventional magnets (BaFe12O19) results a = b = 5,894 Å and c = 23,210 Å, while the substituted phase has a range value of a = b between 5,893 Å to 5,899 Å, and c lattice parameter value is in the range of 23,328 ˚A to 23,346 Å.With the partial substitution of Fe+3 ions by Mn+2 ions, ion Co+2 and Ti+4 ion magnetic properties decrease primarily on the magnetic coercivity from 125 kA / m (conventional) to ~ 5 kA /m in the substituted materials.
Co-Authors Abdul Jami Adi Ganda Putra Agus Sukarto Agus Sukarto Ahmad Royani Akmal Johan Andreas Andreas Arbi Dimyati Arie Fiandimas Arieko Abdillah Asep Yudi Hercuadi Asep Yudi Hercuadi, Asep Yudi Bahfie, Fathan Bambang Soegijono Birawidha, David C Budhy Kurniawan Cahaya, Adam Badra Daulay, Amru Dedi Dedi Diah Susanti Djoko HP Doansi Tarihoran Dwita Suastiyanti Eddy Siradj Edie Sasito, Edie Eko Sulistiyono, Eko Elda Rayhana Elfrida Ratnawati Elisabeth A. S. Elsa Krisanti Erfan Handoko Erik Prasetyo Fajar Nurjaman Fajar Nurjaman Fathan Bahfie firdiyono, F Hafni Lissa Nuri Handoko, Djati Hasan Fahad Idris Novianto Iskandar Muda Iskandar Muda Iskandar Muda Lingga Hermanto Mabe Siahaan Manawan, Maykel Manawan, Maykel Marliyadi Pancoko Mas Ayu Elita Hafizah Maykel Manawan Mujamilah Mujamilah Mulyaningsih, Neng Nenden Musfirah Cahya Fajrah, Musfirah Cahya Nanang Sudrajat Nelson Saksono Nelson Saksono Novizal Novizal, Novizal Novrita Idayanti Nurul Taufiqu Rochman Nurul Taufiqu Rochman Pontas Sialagan Priyono K. Priyono P Priyono Priyono Rafael F Maniur Ridwan Ridwan Roekmijati Soemantojo Roekmijati Soemantojo, Roekmijati Roekmijati W. Roekmijati W. Soemantojo, Roekmijati W. Roekmijati Widaningroem Roekmijati Widaningroem, Roekmijati Roekmijati Widaningrum Roekmijati Widaningrum, Roekmijati Rudi Subagja Saptari, Sitti Ahmiatri Setijo Bismo Setijo Bismo Setyo Purwanto Setyo Purwanto Sialagan, Pontas Sipahutar, Wahyu Solafide Sri Mulyaningsih Sri Mulyaningsih Sukmara, Sony Suprihatin Suprihatin Taufik A. Bonaedy Tito Prastyo Rahman Tito Prastyo Rahman, Tito Prastyo Tri Haryono Ulin Herlina Valency, Tiara Wakid Ali Muntoha Widi Astuti Widi Astuti Wisnu A. Adi Wisnu Ari Adi Wisnu Ari Adi Wisnu Ari Adi Wisnu Ari Adi Yana Taryana Yuliana Sari Yuliusman Yuliusman Yuliusman Yuliusman Yuyu Wahyu