PENENTUAN PERSENTASE DAN NILAI SUSEPTIBILITAS MINERAL MAGNETIK BIJIH BESI YANG BERASAL DARI TIGA LOKASI TAMBANG BIJIH BESI DI SUMATERA BARAT
DOI:
https://doi.org/10.25077/jfu.3.4.249-254.2014Abstract
ABSTRAK
Telah dilakukan penelitian untuk menentukan persentase mineral magnetik dan nilai suseptibilitas magnetik dari sampel bijih besi dari tiga lokasi tambang di Sumatera Barat.Tiga lokasi tambang tersebut terletak di Kecamatan Asam Jujuhan Kabupaten Dharmasraya, Kecamatan Sangir Balai Janggo Kabupaten Solok Selatan dan Kecamatan Tigo Lurah Kabupaten Solok.Suseptibilitas magnetik diukur dengan Bartington MS2 Magnetic Susceptibility Meter dengan MS2B dual frequency sensor.Pengukuran suseptibilitas magnetik dilakukan pada 15 arah.Hasil penelitian menunjukkan bahwa nilai rata-rata persentase mineral magnetik bijih besi masing-masing lokasi berturut-turut yaitu 90,8%, 91,6% dan 95,1%. Nilai rata-rata suseptibilitas magnetik masing-masing lokasi berturut-turut didapatkan 1332,6×10-8 m3kg-1, 1339,2×10-8 m3kg-, dan 1347,5×10-8 m3kg-1. Nilai tersebut menunjukkan bahwa mineral magnetik bijih besi dari masing-masing lokasi diperkirakan didominasi oleh mineral ilmenit (FeTiO3) yang bersifat feromagnetik.Nilai koefisien keragaman dari ketiga lokasi tambang berturut-turut yaitu 3,17%, 5,32% dan 4,09% dan dapat disimpulkan bahwa penyimpangan perhitungan nilai suseptibilitas masih relatif kecil.
Kata Kunci:Suseptibilitas, anisotopi, magnetik, dan bijih besi
Abstract
The research to determine percentage of magnetic mineral and the value of susceptibility magnetic of iron ore from three mine locations in West Sumatera has been done. Those three areas are located in Asam Jujuhan Districts Dharmasraya, Sangir Balai Janggo Districts Solok Selatan and Tigo Lurah Districts Solok. Magnetic susceptibility is measured by using Bartington MS2 Magnetic Susceptibility Meter with MS2B dual frequency sensor, from fifteen different directions of samples. The result of research show that the average percentage of magnetic mineral of iron ore for each location are 90.8%, 9.16% and 95.1%. The average value of magnetic susceptibility are 1332.6×10-8 m3kg-1, 1339.2×10-8m3kg-1, and 1347.5×10-8 m3kg-1.From these values it can be estimated mineral iron ore mineral from each location is dominated by ilmenit mineral (FeTiO3) which are ferromagnetic. Diversity coefficient of three consecutive mine is 3.17%, 5.32% and 4.09% and it can be concluded that the deviation of susceptibility calculation is still relatively small.
Keywords: susceptibility, anisotropy, magnetic, and iron ore
Downloads
Published
Issue
Section
License
Copyright (c) 2024 Hendry Gunawan, Arif Budiman
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Please find the rights and licenses in JFU (Jurnal Fisika Unand).
1. License
The non-commercial use of the article will be governed by the Creative Commons Attribution license as currently displayed on Creative Commons Attribution-NonCommercial 4.0 International License.
2. Authors Warranties
The author warrants that the article is original, written by stated author(s), has not been published before, contains no unlawful statements, does not infringe the rights of others, is subject to copyright that is vested exclusively in the author and free of any third party rights, and that any necessary written permissions to quote from other sources have been obtained by the author(s).
3. User Rights
JFU's spirit is to disseminate articles published are as free as possible. Under the Creative Commons license, JFU permits users to copy, distribute, display, and perform the work for non-commercial purposes only. Users will also need to attribute authors and JFU on distributing works in the journal.
4. Rights of Authors
Authors retain the following rights:
- Copyright, and other proprietary rights relating to the article, such as patent rights,
- The right to use the substance of the article in future own works, including lectures and books,
- The right to reproduce the article for own purposes, provided the copies are not offered for sale,
- The right to self-archive the article.
5. Co-Authorship
If the article was jointly prepared by other authors, the signatory of this form warrants that he/she has been authorized by all co-authors to sign this agreement on their behalf, and agrees to inform his/her co-authors of the terms of this agreement.
6. Termination
This agreement can be terminated by the author or JFU upon two months notice where the other party has materially breached this agreement and failed to remedy such breach within a month of being given the terminating partys notice requesting such breach to be remedied. No breach or violation of this agreement will cause this agreement or any license granted in it to terminate automatically or affect the definition of JFU.
7. Royalties
This agreement entitles the author to no royalties or other fees. To such extent as legally permissible, the author waives his or her right to collect royalties relative to the article in respect of any use of the article by JFU or its sublicensee.
8. Miscellaneous
JFU will publish the article (or have it published) in the journal if the articles editorial process is successfully completed and JFU or its sublicensee has become obligated to have the article published. JFU may conform the article to a style of punctuation, spelling, capitalization, referencing and usage that it deems appropriate. The author acknowledges that the article may be published so that it will be publicly accessible and such access will be free of charge for the readers.