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All Journal TAMBANG Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung PROMINE Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Himasapta MINERAL

EPSB Taman Tono

Jurusan Teknik Pertambangan, Fakultas Sains Dan Teknik, Universitas Bangka Belitung

Author-ID : 5340704

Agriculture, Biological Sciences & Forestry Humanities Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences Other

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ANALISIS BREAK EVEN POINT HASIL PELEDAKAN BATU GRANIT PADA UNIT PELEDAKAN PT ADITYA BUANA INTER DI KECAMATAN MERAWANG KABUPATEN BANGKA Vikram Rinaldi; E.P.S.B Taman Tono; Irvani Irvani
MINERAL Vol 4 No 2 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The process of mining granite in PT Aditya Buana Inter is mined with an open pit (quarry)system. The granite blasting system at PT Aditya Buana Inter consisted of 5 blasting and with 386holes of explosive holes obtained, the total institutional volume was 199.996 m3 (BCM) and the totalvolume of blasting was 13001, 7 m3 (BCM) of the target company of 16,000 m3 (BCM) / month. Drillingand blasting activities to produce blasting volumes of course there are factors that influence theseactivities. Factors that influence drilling and blasting activities affect the costs incurred and the volumeof blasting results produced, the factors that influence these activities include: weather, frontconditions, equipment damage, less optimal blasting geometry measurements. The activity is certainlynot inseparable from the costs that must be incurred by PT Aditya Buana Inter both fixed costs andvariable costs. The total costs incurred by PT Aditya Buana Inter on September 2, 2018 to October4, 2018 are Rp 352,677,200.00 which includes fixed costs of Rp 170,616,020.00 and variable costs(variable costs) of Rp 182,061,000.00, and variable costs per m3 the volume of blasting yield is Rp14,003 /m3. Break even points obtained from calculations for units are 812,468 m3 and in rupiah Rp181,992,901.00. PT Aditya Buana Inter income from the sale of split stone is Rp 472,846,080.00obtained from the sales volume of 2110.92 m3 with a selling price of Rp 224,000 /m3, the profit (L)obtained is Rp 90,610,140.00. Calculation of Break Even Point analysis can determine the minimumamount of volume of rock from the blasting that will be produced and to find out the condition of thecompany not making a profit and also not losing.

Pengaruh Kecepatan Aliran dan Debit Aliran Terhadap Peningkatan Perolehan Konsentrat Bijih Timah Dalam Tailing Pada Alat Secondary Lobby Box Skala Laboratorium E.P.S.B Taman Tono; Dede Seiawan; Janiar Pitulima
MINERAL Vol 4 No 2 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Tailings are the result of the process of mining or processing mineral ore which is considered tohave no economic value. The g in the tailings as evidence that there are losses of cassiterite mineralsthat are also wasted is still of economic value. To reduce losses of cassiterite minerals in tailings, thetool used is the secondary lobby box. The washing of tin tailings was carried out 6 times including theflowrate and the speed of the water flow given differently affected by the opening of the water faucetthat forms the angle of partition on the secondary lobby box. Each of these angles is 15⁰, 30⁰, 45⁰ ,60⁰, 75⁰, and 90⁰. From each experiment a bait was used in the form of tailings with a weight of 5 kgeach (0.47% Sn). At faucet position 15⁰ flow rate of 20.5 l/minute and water flow rate of 0.017 m/secproduced 1.19% Sn and recovery at 76%, position 30⁰ flow rate of 23.5 l/minute and water flow rate of0.020 m/sec produced 1.22% Sn and recovery at 73%, position 45⁰ flow rate of 26 l/minute and waterflow rate of 0.022 m/sec produced 1.25% Sn and recovery at 68%, position 60⁰ flow rate of 28.7l/minute and water flow rate of 0.025 m/sec produced 1.28% Sn and recovery at 65%, position 75⁰flow rate of 32.6 l/minute and water flow rate of 0.028 m/sec produced 1.30% Sn and recovery at53%, and position 90⁰ flow rate of 41 l/min and water flow rate of 0.035 m/sec produced 2.26% Sn andrecovery at 50%. The highest concentration of 2.26% Sn and the desired recovery in the tailingsseparation process is the lowest recovery of 50% in the 90⁰ faucet position. This shows that theprocess of separating products in the form of tailings has increased significantly from the feed contentof 0.47% Sn to 2.26% Sn and transforming tailings products into economically valuable ores.

Kajian Teknis Sistem Penerisan Tambang Di Front 2 TB 2.2 Tempilang Bangka Mitra PT Timah (Persero) Tbk Ines Yuana; E.P.S.B Taman Tono; Janiar Pitulima
MINERAL Vol 1 No 1 (2016): Mineral
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Tin ore mining activities in Front 2 of 2.2 Tempilang Large Mine was operated by business partnerof PT Timah (Persero) Tbk, PT Bahtera Sarindo Utama used Open Pit Mining Method with mechanicalsystems. Open Pit Mining Method would eventually form a large basin, so that would become a placefor air accumulation at the base of mine site, applied drainage system used Repressive KuruativeDrainage System by allowing water to pour into the mine and then concentrated on the front sump andthey would be removed from the mine using pumping systems. Rainfall data used included amaximum rainfall data with period of 2005-2014, the calculation of rainfall plans used Gumbeldistribution and calculation of rainfall intensity with Mononobe Equation, but for the period of rain istaken with the 2-year period. From the research, the existing sump had capability to retain water with avolume of 79.5 m3 and existing pumps had the capacity of 86.4 m3/h, while the total water poured inthe mine was 2172.588 m3/day with total of catchman area was 64085.442 m2. To improve drainagesystem performance on Front 2 of 2.2 Tempilang Large Mine, dimensional sump need to be repairedwith a capacity of 1267.336 m3 to bring outwater volume plan outside of work time (14 hours) and analternative pump was add 1 unit of recommendation pump with the same type such as Mitshubisi6D16 gravel pump (engine) with a pump capacity of 154.8 m3/h, but the actual pump was still beingused so that with the use of two unit pump acquired total pump capacity was 241.2 m3/h with thelifetime of pumping was 9 hours to remove the water 2172.588 m3/per day.

Evaluasi Kinerja Pemindahan Overburden Ditinjau Dari Produktivitas Alat Gali- Muat dan Alat Angkut di Front Kerja 2 TB 2.2 Tempilang Kabupaten Bangka Barat Mitra PT Timah (Persero) Tbk Desi Fatimah; E.P.S.B Taman Tono; Irvani Irvani
MINERAL Vol 1 No 1 (2016): Mineral
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

TB 2.2 Tempilang is managed by partner of PT Timah (Persero) Tbk. Mining system that applied is asystem of mechanical mine, where mining activities carried out by moving the overburden materialprior to mine kaksa layer. The problem that occurs was the productivity of conveyance on the actualcondition only 98.76% of target had been determined, which led to their failure in overburden removalvolume amounted to 1.24%. Therefore, it was necessary to do an evaluation of the performanceaffecting factors of load haul equipment and conveyance in the field. Evaluation was carried out bycalculating the value of productivity, work efficiency and Match factor. The data required includedcycles time data, effective working time, the amount of bucket loading, the type of overburden materialand haul road geometry. Then the data was processed using the formula of mechanical soil removaland analyzed based on the literature related to the problem. The factors causing productivityconveyance has not reached the target after the evaluation due to low efficiency of work, the leastamount of bulk bucket loading, and the low value of match factors. The Alternatives can be done toimprove the productivity of conveyance is to increase the effective work time, additional of bucket loadhaul equipments and additional of conveyances. Effective work time should be increased from 12.34hours to 14.23 hours, so the work efficiency become 79.03% from 68.58% to the achievement ofproduction is 113.80%. Bulk bucket should be added from 15 times to 20 times, so the productivitybecome 131.68 m3/hour of 98.67 m3/hour. Conveyance which is originally 2 units coupled into 3 units,resulting in a change of match factor equipment performance from 0.69 to 1.04 with the achievementof production is 141.14%.

EVALUASI KEMAMPUAN PRODUKSI ALAT GALI-MUAT DAN ALAT ANGKUT GUNA MENCAPAI TARGET PRODUKSI BATUBARA 180.000 TON BULAN OKTOBER 2015 DI PIT LIMOA TAMBANG AIR LAYA EXTENTIONTIMUR PT BUKIT ASAM (PERSERO)TBK UPTE Maria Jeane Inggrid; E.P.S.B Taman Tono; Janiar Pitulima
MINERAL Vol 1 No 1 (2016): Mineral
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Eastern Extension of Pit Air Laya Limoa Mine was one of Air Laya Mine site that has coal miningbusiness license owned by PT Bukit Asam (Persero) Tbk. Excavator and truck method were applied inthat mine site. Mechanical equipments used in this site were 1 unit of Komatsu PC 800 SE Excavatorand 6 units of HINO LM 500 Dump Truck. Coal production target in Eastern Extension of Pit Air LayaLimoa Mine in October 2015 was 180.000 ton, but the production capacity of load haul equipment was157.179,39 ton with the work time efficiency at 14,07 hour/day and load haul equipment productiononly 129.245,20 ton with the work time efficiency at 13,97 hour/day. Therefore, evaluation wasnecessary throughout factors affecting working performance of mechanical equipment to achieve thetarget. Evaluation in achieving the target of coal production was conducted by calculating theproductivity, work efficiency and match factor. The data required to obtain these values includedequipment cycle time, the effective work time effeciency, the amount of bucket loading, density andcoal swell factor. Then the data was processed by using formula of mechanical soil removal andanalyzed based on literature related to the issue. After the evaluation of factors affectingperformance of mechanical equipments then work time effeciency corrected to be 15,61 hours/dayand additional of 6 to 7 unit of conveyance. There were changes in work time effeciency between loadhaul equipments and conveyance from 0,83 to 0,97. Production capabilities generated load haulequipment after being evaluated was 192.291,14 tons and production capabilities of conveyances,after the evaluation amounted to 188.236,03 tons.

EVALUASI KEMAMPUAN PRODUKSI RIPPING DOZER RIPPER D375 UNTUK MENCAPAI TARGET PRODUKSI BATUBARA 180.000 TON BULAN OKTOBER DI TAMBANG AIR LAYA EXTENTION TIMUR FRONT LIMOA PT BUKIT ASAM (PERSERO) TBK UPTE Gregorius Fredrick; E.P.S.B Taman Tono; Irvani Irvani
MINERAL Vol 1 No 1 (2016): Mineral
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Coal production target in East extension of TAL Limoa Front was 180.000 ton/month in October2015 but the target achieved only 115.967,59 ton with the percentage achievement of productiontarget at 64,4 %. Therefore it was necessary to evaluate performance of Dozer Ripper D375 numberseries DZ 521. The evaluation conducted by taking primer actual data in mine site such as cycletime, work distance, work effeciency, Ripper penetration and then the collecting data was processedto make reparations of DZ 521 type of D375 Ripper with the aim to meet the production target. Theachieved production after prior evaluation conducted by increasing work time effeciency was162.826,57 ton with the production achievement percentage at 90.45 % and the lack production was17.173,43 ton, a further evaluation was conducted by repairing of Ripper penetration performance andthe production was 206.138,22 ton with the production achievement percentage at 114% and theexceed production was 26138,22 ton. Then work time efficiency and Ripper penetration was improvedto obtain target production of 289.475,83 ton with the production achievement percentage at 160%and exceed production of 109.475,83 ton with time reserve 150 hours/month and 4,8 hours/daymaybe can back up the problems on location production. The evaluation had been met coalproduction target of Limoa Front.

Kajian Efektifitas Kerja Operator dan Kondisi Alat pada Front Penambangan Tambang Besar Pemali PT Timah Tbk Rajesta F. Wardana; E.P.S.B. Taman Tono; Delita Ega Andini
MINERAL Vol 6 No 1 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The work efficiency value on the TB Pemali mining front in 2018 is relatively low (57.16%), This condition means it required the improvement of the work efficiency in accordance with the good mining practice. Method used in this research including preparation, collecting data and field orientation, which is then processed as follows: counting work efficiency of the dig tools for load and hauling tools in mining area front, analyzing operator performance and equipments conditions in mining area front, and analyzing work efficiency improvements. The result showing that score of current work efficiency of the dig tools for load in the amount of 62.74%, and for hauling tools in the amount of 57.68%. This result shows that low score of work efficiency in mining area front caused by large breakdown time of the hauling tools and low performance of the operator, then improvement of work efficiency is carried out by reducing the operator's variable trouble limit by 35% and reducing indent time of broke sparepart, the final score of work efficiency of the dig tools for load in mining area front is in the amount of 66.27% and for hauling tools in the amount of 66.44%

Kajian Perolehan Hasil Bijih Timah Berdasarkan Ukuran Butir Terhadap Variabel Magnetic Separator Skala Laboratorium Muhammad Rizki Pratama; Janiar Pitulima; E.P.S.B Taman Tono
MINERAL Vol 6 No 2 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Industrial-scale Magnetic Separator is used to process tin ore by separating magnetic and nonmagnetic minerals using a belt conveyor speed and splitter opening only one variation. Based on this, this research is intended to obtain a more varied and optimal combination of variable settings in the recovery of tin ore yields. The method used is quantitative data analysis method by obtaining nonmagnetic minerals using a combination of splitter openings and belt conveyor speed based on grain size, calculating the content of tin ore in non-magnetic minerals using the Grain Counting Analysis method and calculating the composition of tin ore recovery. The research was conducted based on grain sizes of 60 mesh, 80 mesh, and 120 mesh using a combination of splitter opening sizes of 0.2 cm, 0.4 cm, and 0.6 cm and using a belt conveyor speed of 27.12 cm/s, 28.15 cm/s, and 28.40 cm/s. The sample used for each grain size is 9,000 grams with repetition for each combination of variables, namely 30 times. The results of this study obtained the highest yield of tin ore at grain size of 80 mesh as much as 1,753.7 grams in 8,920.3 grams of non-magnetic minerals with tin ore grades of 19.66% using a combination of speed 27.12 cm/s and splitter opening 0.2 cm. Based on the results of the study, the tin ore contained in the non-magnetic material processed by the Magnetic Separator, the grain size of 80 mesh is higher than that contained in the grain size of 60 mesh, while the grain size is finer than 80 mesh, the lower the recovery of tin ore contained in the non-magnetic material. Meanwhile, the larger the splitter opening and the speed of the conveyor belt, the higher the nonmagnetic minerals obtained.

Evaluasi Kemiringan Jalan Tambang Terhadap Cycle Time Alat Angkut Pada Dump Truck Hino FG 235 JJ Tambang Batu Granit Di PT Aditya Buana Inter Kabupaten Bangka Fitra Adreansyah; Franto Franto; E.P.S.B Taman Tono
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.v8i1.4094

PT ABI is a private company engaged in the granite mining business using the open pit method. The problem encountered is that there is a slope of the mine road that does not comply with the standards set by the company, namely ≤ 8%, the slope of the mine road, which is not suitable, makes the truck to produce large rimpull, which affects the overall distribution time. This study aims to evaluate and optimize the dump truck cycle time obtained. This research begins by calculating the actual travel time on 2 dump trucks in 40 trips, conveyance A gets 493.72 seconds and conveyance B is 495.75 seconds, the actual travel time on the haul road segment exceeds ≥ 8%, i.e. in the B-C segment which has a grade of 8.86% with an average travel time of 20.38 seconds and in the C-D segment which has a grade of 10.51% with an average travel time of 37.91 seconds. Obtained circulation time decreased by 5 seconds from 494.73 seconds to 489.69 seconds with a percentage increase of 1.04% after optimization, meaning that the conveyance can transport 89 tons more of material.

Interpretasi Material Pada Rancang Bak Ukur Skala Laboratorium Dengan Pendekatan Konfigurasi Wenner, Wenner – Schlumberger dan Dipole-dipole Guskarnali Guskarnali; Haslen Oktarianty; Irvani Irvani; E.P.S.B. Taman Tono; Delita Ega Andini
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.v8i2.4958

Geoelectric measurements have been carried out using multichannel ResistivityMeter (Geores) tools with Wenner, Wenner-Schlumberger, and Dipole-dipole Configuration approaches on the influence of materials arranged in a laboratory-scale measuring tub design with dimensions of 194x184x80 cm. The measured method is the variation in resistivity value against each trajectory of the material. The method used is the variation of resistivity values for each path of the material that has been arranged in a laboratory scale measuring design. Geoelectric measurements were carried out on 7 lines (5 line in the West-East direction and 2 line in the North-South direction). The spacing between the electrodes of each line is 10 cm with 16 electrodes in one line so that each line has a length of 160 cm or 1.6 m which corresponds to the length and width dimensions of a laboratory scale measuring design. The electrode arrangement parameters are constant with respect to changes in the configuration selected from the geores parameters during geoelectric measurements. The measurement results showed that the identified depth reached 31.2 cm. The low resistivity value category has an interval of 374-4,397 ohm.meters at a depth of 0-12.5 cm, which is the influence of building sand material containing water and soil, while the depth interval is 12.5 - 31.2 cm ohm.meters (material category that is influenced by 2 iron rods, tin tailings sand, granite, gravel) with resistivity values ranging from 12,378–67,498 ohm.meters. From experiments on the influence of the resistivity values of the three Wenner, Wenner-Schlumberger, and Dipole-dipole configurations, it was obtained that the smallest absolute error resistivity value in the Wenner configuration was 5.01% against the overall average absolute error resistivity value of 10.16%.

Co-Authors 0DI RIPANDA Ahmad Reza Setiawan Aleo Saputra Alfitri Rosita Alfitri Rosita Amri Tampubolon Anisa Indriawati Aulia, Nur Fajri Awwab Hafizh Ben Paulus Manurung1, Dede Seiawan Delita Ega Andini Desi Fatimah Dini Wulansari Eddy Ibrahim Eddy Ibrahim Eko Prayitno Ester Indah Sari Firmansyah Firmansyah Fitra Adreansyah Franto, Franto Gregorius Fredrick Guskarnali, Guskarnali Haslen Oktarianty Hendra Susanto Indra Yustian Ines Yuana Irvani Irvani Irvani, Irvani Irvani, Irvani Irvani, S.T., M.Eng., Irvani, Janiar Pitulima Kusuma, Dimas Dian M.Arief Adilah Maria Jeane Inggrid Monika P Handayani Muhamad Nasuhi Muhammad Rizki Pratama Oktarianty, Haslen Rajesta F. Wardana Reza Reza Vikram Rinaldi

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