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All Journal TAMBANG Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung PROMINE Chemistry Indonesian Journal of Chemical Research Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Abdi: Media Pengabdian Kepada Masyarakat MINERAL Jurnal Teknik Pertambangan (JTP)
Janiar Pitulima
Jurusan Teknik Pertambangan, Fakultas Sains Dan Teknik, Universitas Bangka Belitung
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences Other

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Kajian Teknis Kinerja Alat Rod Mill terhadap Pengecilan Ukuran Butir di PT Babel Utama Korpora Site Pemali Kabupaten Bangka: Technical Study of Rod Mill Performance on Grain Size Reduction at PT Babel Utama Korpora Site Pemali Bangka Regency Chaca, Manisa; Janiar Pitulima; Franto
MINERAL Vol 9 No 2 (2024): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/96an1n30

Abstract

Unit produksi SHP PT BUMAKO Site Pemali merupakan mitra Timah Tbk yang mengolah sisa hasil pengolahan timah untuk diproduksi kembali berdasarkan Keputusan Menteri No. 1827 tahun 2018. Proses pengolahan SHP timah primer di PT BUMAKO menggunakan alat penggerusan berupa Rod Mill dengan proses basah dan proses pencucian menggunakan alat konsentrasi berupa shaking table. Produk hasil dari Rod Mill Upgrading diharapkan minimal 50% berukuran ≥60 mesh. Namun, hasil ukuran penggerusan aktual di PT BUMAKO hanya mencapai 30% dari target. Hal ini disebabkan belum adanya penetapan variabel pada alat tersebut. Akibat rendahnya efektivitas penggerusan tersebut mengakibatkan biaya produksi tinggi dan terganggunya proses konsentrasi, oleh karena itu dilakukan penelitian menggunakan alat Rod Mill dengan memvariasikan 3 variabel sebanyak 12 kali percobaan yaitu, waktu penggerusan sebanyak 2 variasi (1,5 jam dan 2 jam), jumlah batang rod sebanyak 3 variasi (25, 23 dan 21 batang) dan volume air sebanyak 2 variasi (140 L dan 150 L air). Hasil pada 12 kali percobaan menunjukkan persentase lolos tertinggi sebesar 59,25% dan persentase lolos terendah sebesar 41,63%. Variabel penggerusan yang paling efektif yakni waktu penggerusan selama 2 jam, jumlah batang rod sebanyak 25 batang dan volume air sebanyak 140 L dengan produk persentase lolos mesh 60 sebesar 59,25%.
Evaluasi Kinerja Alat Pengolahan Wet Belt Low Intensity Magnetic Separator (WBLIMS) Untuk Meningkatkan Kadar dan Recovery Sn di TB Primer Batubesi PT Timah Tbk Kabupaten Belitung Timur: (Performance Evaluation of Wet Belt Low Intensity Magnetic Separator (WBLIMS) for Enhancing Grade and Recovery of Sn in the Primary TB Batubesi Site PT Timah Tbk East Belitung Regency) Pangestu, Dimas; Franto, Franto; Pitulima, Janiar
MINERAL Vol 8 No 2 (2023): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v8i2.5020

Abstract

Primary TB Batubesi Site a subsidiary of PT Timah Tbk, processes primary tin feed stockpile and SHP of oxide clay type using various tools, including the Wet Belt Low Intensity Magnetic Separator (WBLIMS). Currently, WBLIMS can only produce tin concentrate with a grade of 0.5-2% and a recovery of 5-8%, falling below the company's target of 8% grade and 15% recovery (XRF Test). This research conducted eight experiments with variations in feed types and rates. The WBLIMS feed from the stockpile has a Sn content of 0.62%, resulting in a tin concentrate with 1.21% Sn and a recovery of 7.05%. On the other hand, the feed from SHP has a Sn content of 0.61%, resulting in a tin concentrate with 0.95% Sn and a recovery of 5.11%. The type and rate of feed affect the increase in Sn grade and recovery. At low feed rates, the feed material yields lower Sn grade and recovery, while at high feed rates, the results are higher. Increasing the feed rate for WBLIMS from the stockpile leads to a decrease in Sn grade and recovery, whereas in the processing of SHP, the Sn grade increases but recovery varies. Experiments F1L1 and F2L3 yield the most optimal Sn grade and recovery, with F1L1 having a Sn grade of 2.28% and recovery of 11.54%, and F2L3 having a Sn grade of 2.87% and recovery of 9.24%. Although not reaching the company's target, these experimental results can enhance the Sn grade and recovery compared to the previous setup.
Kajian Teknis Kinerja Jig Primer terhadap Kadar Recovery dan Looses Bijih Timah pada SHP KIP Mitra Matras di Bidang Pengolahan Mineral Unit Pengolahan PT Timah Tbk: Analysis Technical Study of Primary Jig Performance on Recovery Rates and Tin Ore Losses at SHP KIP Mitra Matras in the Mineral Processing Sector at Processing Unit of PT Timah Tbk Aditya, Ismu; Pitulima, Janiar; Andini, Delita Ega
MINERAL Vol 9 No 2 (2024): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v9i2.5073

Abstract

Bidang Pengolahan Mineral Processing Unit of PT Timah Tbk operates in the field of tin ore processing. The problem at the research location is that there is no standard operating standard for the Primary Jig tool for washing Processing Waste (SHP). The aim of this research is to determine the settings for the Primary Jig variables in order to obtain optimal levels, Sn recovery and looses. The research method used is Grafity Concentration. The feed used is SHP from KIP Mitra Matras. The experiment was carried out 21 times. Each experiment used 7 variations of Primary Jig stroke speed (300 rpm, 350 rpm, 400 rpm, 450 rpm, 500 rpm, 550 rpm, 600 rpm) and Bed thickness (70 mm, 80 mm, 90 mm). Grain Counting Analysis shows a feed Sn content value of 9.96%. GCA analysis shows that the minerals in the bait are cassiterite, ilmenite, monazite, zircone, pyrite, siderite, limonite, tourmaline, quartz and iron rust. Low stroke speed results in high concentrate Sn content with low Sn recovery and little looses wasted and vice versa. A high Bed thickness results in low Sn concentrate content, high Sn recovery, and a lot of looses is wasted, and vice versa. Setting the optimal Primary Jig operating variables with variations in punch speed of 450 rpm and Bed thickness of 80 mm obtained a Sn content of 41.36% and a Sn recovery of 60.11%. Based on the results of calculating the degree of liberation, the highest average value of the degree of liberation was obtained at mesh -100, indicating that the SHP KIP Mitra Matras concentrate is classified as having a fine grain size.
Co-Authors Aditya, Ismu Adiyatma Adiyatma Adiyatma, Adiyatma Alfitri Rosita Alldino Hernanto Amran Amri, Novinda Tiara Ayu Apriastuti, Elgatania Dwi Armansyah Putra Sinulingga Arrofah, Muhammad Asriza, Ristika O. Bobby Bagaskara Chaca, Manisa Daryono, Yuli Dede Seiawan Delita Ega Andini Dihan Fauzan Dimas Pangestu Eko Eko Pryatna Gaol Elgatania Dwi Apriastuti Elisa Elisa Elisa Elisa EPSB Taman Tono Evrantino Insani Sitohang Firmansyah Firmansyah Firmansyah Firmansyah Franto Franto, Franto Franto, Franto Frudis, Irwan Edel Guskarnali, Guskarnali Haslen Oktarianty Hendra Susanto Hendra Susanto Inda Pratama Putri Indra Chang Ines Yuana Inggrid, Maria Jeane Irvani, Irvani Irvani, Irvani Irwan Edel Frudis Kristina Damayanti Panjaitan Mardiah Mardiah Mardiah Mardiah Mardiah Mardiah Mardiah Maria Jeane Inggrid Muhammad Arrofah Muhammad Rizki Pratama Novrida Siregar Pangestu, Dimas Rahmad Tanjung Rezky Dwi Aditya Ristika Oktavia Asriza Robby Gus Mahardika Selvira Oktaviani Tono, E.P.S.B Taman Verry Andre Fabiani Yuana, Ines Yuli Daryono