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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 Pengaruh Variabel Shaking Table Terhadap Peningkatan Kadar dan Recovery Pencucian Bijih Timah Unit di Unit Metalurgi PT Timah Tbk Novrida Siregar; Janiar Pitulima; Haslen Oktarianty
MINERAL Vol 7 No 1 (2022): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v7i1.3332

Abstract

The Mineral Processing Sector (BPM) is a place for processing precious tin minerals with other associated minerals. This research was conducted because the tin content in table water as feed in processing is still quite economical, namely 9.64% Sn and the minimum level that must be achieved as smelting feed is >60% Sn. The data collection method was carried out by conducting feed analysis with the GCA test to determine the levels and distribution of minerals in the feed. Furthermore, the shake table tool variations are adjusted such as stroke lengths of 15 mm, 22 mm, 10 mm with a sample result of 9 samples and the speed of air flow over the table is carried out as many as 3 variations, namely 0.025 m/s, 0.011 m/s, 0.014 m/s with results of 9 samples. Then the combination of the two variables was carried out with the results of 27 samples. The results of the GCA analysis were carried out to see the effect on levels and recovery. The results of the combination of stroke length and water flow velocity were the most optimal in combination with a stroke length of 15 mm and a water flow velocity of 0.025 m/s resulting in a concentrate of 58.44% Sn, moderately 6.26% Sn, and tailings 2.72% Sn as well as recovery. by 58.49%.
Potensial Mineral Kasiterit Pada Tailing Penambangan Timah Daerah Parit Tiga Kabupaten Bangka Selatan Rezky Dwi Aditya; Irvani Irvani; Janiar Pitulima
MINERAL Vol 7 No 1 (2022): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v7i1.3334

Abstract

Unconventional tin mining in Parit Tiga Village, Toboali District, South Bangka Regency is one of the mining sites that is rampantly carried out by the community. The problems that arise from the activities carried out by the community indicate that tin minerals in that location still have the potential to be mined at the conventional mining scale, this condition makes researchers want to study how much potential Sn levels are still contained even though the location is in the form of tailings. Data collection was 16 points at the first tailings location with an area of 160.000 m2 and 15 points at the second tailings location with an area of 150.000 m2. The samples were taken regularly with a distance between samples of 100 meters with a depth of 1,5 meters. Tailings samples were then tested using a microscope overview analysis method to obtain cassiterite levels. The results showed that the study area had 201.15 tons of Cassiterite potential at the first location and 300 tons at the second location to be studied further in terms of its economics.
Penilaian Tingkat Kestabilan Lereng De ngan Metode Slope Mass Rating (SMR) pada Bench S dan J PT Tanjung Bukit Nunggal Kabupaten Bangka Tengah Evrantino Insani Sitohang; Janiar Pitulima; Haslen Oktarianty
MINERAL Vol 7 No 1 (2022): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v7i1.3335

Abstract

Excavation activities on mining activities cause tension changes on the ground that trigger the occurrence of deformation then followed by changes in slope stability. If slope stability is impaired then it will lead to the possibility of an avalanche, this will certainly result in the disruption of mining activities that endanger workers who are on the slope area with potential for avalanches. This study aims to find out parameters of basic RMR and deflection values of basic RMR at bench S and J, find out the values of slope stability using SMR at bench S and J, and cope with slope instability based on SMR values. The methods used in this study are quantitative and qualitative methods namely scanline sampling and rock physical test that is Uniaxial Compressive Strenght (UCS) tests, and Rock Quality Designation (RQD) measurements. The results of this study show that the rock conditions at the bench S and J are still good with RMR values of approximately 71 ± 73, the probability of avalanche occurrence is very low as SMR values range 71 ± 73, but still it needs to be carried out cutting on blocks indicated to ruins.
Perencanaan Design Geometri Peledakan Berdasarkan Karakteristik Massa Batuan di Bench M PT Tanjung Bukit Nunggal Kabupaten Bangka Tengah Armansyah Putra Sinulingga; Franto Franto; Janiar Pitulima
MINERAL Vol 7 No 1 (2022): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v7i1.3336

Abstract

The availability of the discontinuity structure causes the rock to be blown up have a cavity that later can be traversed by the thumping of explosive energy, so force from the explosion will be inhibited and the blasting is not optimal. This study aims to find the physical condition of granite rock at the mining site, find out the value of Blastibality Index of rock, and analyze the geometry design of blasting to obtain fragmentation ≤ 75 cm. The methods used in this study are quantitative and qualitative methods that are measuring joint structures, physical conditions of rocks, calculation of Rock Factor (RF) values, and calculation of Blastibility Index. The results of this study show if the physical condition of the rocks on bench M has an RQD value 88.97 % - 99.66 %, and Rock Factor value 5.51 and a Blastability Index 45.9 so, obtained a design of geometry with a burden 3.4 m, spacing 5.1 m, stemming 2.55 m, subdrilling 0.68 m, height 7.62 m, depth 5.1 m, and power charging 2.55 m.
Kajian Teknis Pengolahan SHP menggunakan Shaking Table untuk Mengoptimalkan Kadar dan Recovery Sn di TB Batu Besi PT Timah Tbk Kristina Damayanti Panjaitan; Janiar Pitulima; Delita Ega Andini
MINERAL Vol 8 No 1 (2023): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v8i1.4096

Abstract

PT Timah Tbk carried out the development by establishing TB Primer Batu Besi, East Belitung. The purpose of this study was to find out the variable setting of the shaking table in order to obtain optimal levels and recovery of Sn. The research method used is gravity concentration using a shaking table tool. The feed used is Remaining Processing Results from the primary shaking table. The experiment was carried out twice, the first experiment was carried out 27 times with a sample weight of ± 78 kg. Each experiment used 9 variations, namely the tilt of the shaking table (8°;8.5°;9°) and the stroke length (12mm, 14mm, 16mm). The second experiment used ±5 tons of material with the most optimal tool settings from the first experiment. The feed sample material and product shaking table were tested using the XRF and GCA tests. The analysis of the XRF test showed that the Sn content in the feed was 0.45%. GCA analysis shows that the associated minerals are cassiterite, ilmenite, monazite, pyrite, quartz, tourmaline, hematite and magnetite. The optimal setting for the operating variable of the shaking table is with a variation of the tilt of the shaking table 8° and a stroke length of 12 mm to obtain a concentrated Sn content of 8.04% and a concentrated Sn recovery of 20.75%. The second experiment obtained a total Sn recovery of 17.25%. If one additional SHP processing line is added to TB Batu Besi, the company's recovery will increase from ±15% to ±29.55%.
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 Dimas Pangestu; Franto Franto; Janiar Pitulima
MINERAL Vol 8 No 2 (2023): MINERAL
Publisher : Jurusan 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 Aditya, Ismu; Pitulima, Janiar; Andini, Delita Ega
MINERAL Vol 9 No 2 (2024): MINERAL
Publisher : Jurusan 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.
Evaluasi Produktivitas Crushing Plant Untuk Pencapaian Target produksi 30.000 Ton/Bulan Batu Granit PT Mandiri Karya Makmur Di Desa Tanjung Gunung Kabupaten Bangka Tengah: Evaluation Of Crushing Plant Productivity To Meet Production 30.000 Ton/Month Of PT Mandiri Karya Makmur’s Granit Rock In Tanjung Gunung Village, Central Bangka Regency Firmansyah, Firmansyah; Tono, E.P.S.B Taman; Pitulima, Janiar
MINERAL Vol 2 No 1 (2017): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v2i1.1542

Abstract

PT Mandiri Karya Makmur is one of private company that engaged in sector of mining and processing of granite rock located in Tanjung Gunung village, Central Bangka Regency with production target of 30.000 ton/year. PT MKM operates 1 unit of crushing plant as a place of granite rock crushing process in order to produce the size of granite rock product that suit to consumer demand. However, The production target of determined crushing plant had not been reached.The aim of this research was to assess the real productivity of crushing plant of PT MKM. The data used in in this research included work time data, the amount of obstructive production time, weight of rock sample and belt conveyor velocity. The Data had functions to assess the availability of equipment and the real productivity of crushing plant. It recommended to repair crushing plant in order to increase the productivity from the result of calculation data.The result of crushing plant analysis in field showed that installed production equipment was 56.250 ton/month, 18.738 ton/month of maximal production, and the real crushing production achieved of 8.848,5ton/month.The availability value of crushing unit, mechanical availability (MA) was 62.5 %, phisycal availability (PA) 71.66 %, use o availability (UA) 65.89 %, effective utilization (Eut) 47.22 %, effective work time 4.25 hour/day and work efficiency 47.22 %. From the condition, production target had not been achieved. The efforts can be conducted to repair crushing unit in order to meet production target such as : 1) To change production target to 15.000 ton/month, 2) To decrease delay time caused human errors (non technical) will raise effective work time from 4.25 hour/day to 6.45 hour/day and will raise productivity as big as 4.580,5 ton/month, from 8.848,5 ton/month to 13.429 ton/month, 3) To change crushing plant
Pengaruh Penambahan NaOH dan Ca(OH)2 Terhadap Penurunan Kadar Logam Berat (Fe) di Kolong Tambang 23 Desa Kimhin Kecamatan Sungailiat: The effect of the addition NaOH and Ca(OH)2 at reduced levels of heavy metal (Fe) in Tambang 23 Kimhin Village of Sungailiat Subdistrict Apriastuti, Elgatania Dwi; Mardiah, Mardiah; Pitulima, Janiar
MINERAL Vol 2 No 2 (2017): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v2i2.1552

Abstract

Tin mining activity causes a lot of opening pit known as kolong in Bangka Island. Ecologically, kolong has function as retention reservoir that contain harmful acid water. Tin mining ex-pit potentially causes environment effects especially the quality and quantity of water contained heavy metal. One of kolong in Tambang 23 Kimhin Village of Sungailiat subdistrict contain a quite high of heavy metal of Fe in amount 2.18 mg/L that tested from the result of testing of Health Official Laboratorium of Bangka Regency. Therefore, this research conducted to decrease metal grade in the water kolong. This research focused based on metal grade of Fe value. Analysis conducted by counting the decrease of percentage of Fe metal grade. The method used in lowering metal grade was precipitation method using NaOH and Ca(OH)2 solution. Metal grade analysis used spectrophotometer. The aim of this research was to determine the influence of solution concentration, precipitation time and solution influence of NaOH and Ca(OH)2 in lowering Fe grade. The result of research showed the influence of adding precipitation of NaOH and Ca(OH)2 with the precipitation time. The longer time of precitipation, the bigger percentage of lowering Fe metal. The biggest percentage of Fe metal grade was on concentration of NaOH 6% and Ca(OH)2 3% with the lowering percentage of 88.99% and 96.33% respectively. The optimum time to precipitate Fe metal was in 60 minute. Based on research result showed that precitipation of NaOH better than Ca(OH)2.
Perencanaan Tambang Secara Manual dan Software Micromine Sebagai Pembanding Pada Kapal Keruk 21 Singkep 1 Di Laut Air Kantung, PT Timah (Persero) Tbk: Manual Mine Plan and Software of Micromine As a Compare On Dredger 21 Singkep 1 At The Air Kantung Sea, PT Timah (Persero) Tbk Elisa, Elisa; Irvani, Irvani; Pitulima, Janiar
MINERAL Vol 2 No 2 (2017): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v2i2.1559

Abstract

Dredger 21 Singkep 1 is a mean of production offshore tin mining owned PT Timah (Persero) Tbk, which in 2016 is located in the Air Kantung Sea. Before the implementation of the necessary mining mine planning as a guide to provide an overview of work in the field conditions. Mine planning studies considering the economical extraction and analysis of the operations of dredgers by applying two ways; manually which reserves calculations using the Poligon Methods (Area Of Influence) with sea drilling spacing of 100 × 100 m and assisted Software Micromine as a comparasion. Based in the calculation, the value of the break even production of 42 tonnes ore/month and the break even grade of 0,23 kg/m3. Mining in May to October 2017 to continue the old location to the position of excavation to the northwest. Results obtained Idh manual production planning (Content Calculated) 1.263.980 m3, TDH (Tin Calculated) 0,292 kg/m3 and PDH (Production Calculated) 369,69 tonnes, while the calculation of Micromine obtained Idh 1.271.379 m3, Tdh 0,273 kg/m3 and Pdh 347 tonnes. Fault tolerance value 0,58%. Repair manual planning the excavation efficiency is obtained Idh 1.283.847 m3 increased 1,55%, Tdh 0,327 kg/m3 increased 10,7% and Pdh 409,37 tonnes increased 11,85%. Based on the analysis of drill profiles, the most effective method of extracting using combination system, where the overburden excavation with long face method and leaded soil with short face method.
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. Aulia, Nur Fajri 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 Indradewa, Rhian Ines Yuana Inggrid, Maria Jeane Irvani, Irvani Irvani, Irvani Irwan Edel Frudis Kristina Damayanti Panjaitan 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