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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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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.
Evaluasi Titik Impas Biaya Peledakan Batu Granit Bulan Januari 2017 Melalui Perbaikan Metode Peledakan Pada PT Vitrama Properti Di Desa Air Mesu Kabupaten Bangka Tengah: Evaluation Break Even Point OF Granite Explosion Cost In January 2017 Through Improved Blasting Methods At PT Vitrama Properti In Air Mesu Village District Of Bangka Tengah Susanto, Hendra; Tono, E.P.S.B Taman; 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.v2i2.1561

Abstract

PT Vitrama Properti is one of the private companies that run on the mining field, namely the mining of natural resources of granites. In this study, the researcher observes the cost of explosion used by PT Vitrama Properti in its mining of granites. According to the economic analysis, to determine the cost of explosion need to count on the breakeven point. The method employed in this research is to analyze the breakeven point. Breakeven point is a calculation used to know the volume of explosion rate so that the total income and total cost will be at the breakeven point. The data collection is conducted from December 2016 to February 2017, including the data of drilling cost, explosion usage cost, the salary of employees and contract employees, excavators and dump trucks fuel cost, equipment ownership cost, and the specification of explosion tools and equipment. The result of the data analysis shows that the total explosion cost paid by PT Vitrama Properti in January 2017 is Rp.1,041,936,063,00 and the total income earned is Rp.1,287,134,940.00, so the total profit made is Rp.245,198,976.00. Whereas, the breakeven point of PT Vitrama Properti in January 2017 is on the explosion volume rate of 23,109.08 m3 with the total earning and total cost is Rp.841,170,781.00. One of the significant factors to reduce the cost of explosion is to improve the geometry of explosion and to make the effective use of ANFO. After implementing the improved geometry of the explosion, the breakeven point is also improved from the volume rate of 23,109.08 m3 to the volume rate of 21,090.35 m3. Also, to increase the income from the explosion process can be done by increasing the sale of granite from the explosion (boulder) into 7,072.17 m3 with the total income of Rp.257,426,988.00, as well as by increasing the total product sale of 24,752.59 m3 with the total income obtained of Rp.900,994,458.00.
Evaluasi Produktivitas Alat Gali-Muat dan Alat Angkut untuk Pengupasan Tanah Penutup Bulan Agustus 2016 Di Pit 3 Timur Penambangan Banko Barat PT Bukit Asam (Persero) Tbk: Evaluation of Load-Haulage Productivity In Top Soil Stripping Process On August 2016 In Pit 3 of West Banko Mine of PT Bukit Asam (Persero) Tbk Arrofah, Muhammad; 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.v2i2.1564

Abstract

PT Bukit Asam (Persero), Tbk is a state-owned enterprise that operates in mining industry, particularly coal mining that has 4 main mining location. One of them is an east pit 3 of Banko Barat mining managed by PT SumberMitra Jaya. Mining process is exploited by using open pit methode which excavate overburden material using load-haulage equipment and transport system. Load-haulage equipments are used excavate, and to load overburden material, and transport system are used to carry overburden in disposal. This whole processes known as mechanical mining system. However, the actual condition of load-haulage productivity was only 84.56 % compared to determined target that caused overburden remova volume not to be achieved in amount of 15.44 %. Otherwise, evaluation of factors that affected performance of load-haulage equipment and transport system need to be conducted. Evaluation was conducted by calculating productivity, work efficiency, match factor of equipment, and load–haulage geometry. The data collected was cycle time, effective utilization, kind of material overburden and load-haulage geometry to get the value. Then, the collected data processed by using formula of mechanical soil movement and analysed based on literatures that related to the problem. The causing factors of load-haulage productivity in not achievement of determined target after evaluation conducted was low of work efficiency, amount of delay time in the amount of 1.19 minute caused by narrow transport roads, and low of match factor of equitment in the amount of 0.92. The alternatives that can be carried out to increase load-haulage productivity is increasing effective work time and widing transport road. Effective work time of transport system should be leveled up from 15.237 hour to 15.682 hour in fleet I and fleet II, and in fleet III should be leveled up from 14.122 hour to 14.567 hour. Thus, the total of transport system productivity will increase to 576,503.83 bcm/month from 486,247.59 bcm/month.
KajianTeknis Pengaruh Panjang Pukulan Terhadap Recovery Pencucian Bijih Timah Menggunakan Alat Pan American Jig Skala Laboratorium Jurusan Teknik Pertambangan Universitas Bangka Belitung: Technical Study OnTheInfluence Of Stroke For Recovery Tin Ore Washing By Pan American Jig Laboratory Scale Of Mining Engineering Department Bangka Belitung University Adiyatma, Adiyatma; Pitulima, Janiar; Irvani, Irvani
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v3i1.1568

Abstract

Washing stage of tin ore is done the separation process valuable minerals of tin ore with mineral impurities. This process can be done using jig such as Pan American Jig. The length of stroke is one of the parameters that affect the performance of the jig with high recovery of tin ore leaching. The experiment was carried out by washing experiment using Pan American Jig scale laboratory on 6 times including variation of stroke length 15 mm, 12 mm, 10 mm, 8 mm, 6 mm, and 5 mm with 19 washing sample. The collection and processing of data includes the weight and grade in each of the feed, concentrates and tailings. Determination of recovery value of each experiment is done through calculation between the grade and weight produced by each sample from washing process. Minerals with a high CC value will be very easily separated by the method of Gravity Concentration for example mineral cassiterite with quartz. The highest recovery was obtained in experiment 1 of 68.848% with a stroke length of 15 mm and the lowest recovery was in experiment 6 of 45.801%. However, the highest grade gain was in experiment 6 of 1.3246% and the lowest grade in experiment 1 was 1.2438%. The higher stroke length made greater recovery value produced, the greater recovery made the lower grade obtained.
Kajian Teknis Alat Gali-Muat dan Alat Angkut Pada Pencapaian Pengupasan Overburden 1.120.000 BCM di Pit Taman Tambang Air Laya Bulan September 2016 PT Bukit Asam (Persero) Tbk: Tecnical Study Trencher-Load Transport and Conveyance at 1,120,000 BCM of Overburden Stripping Achievement in Pit Taman Tambang Air laya September 2016 PT Bukit Asam (Persero) Tbk Frudis, Irwan Edel; Mardiah, Mardiah; Pitulima, Janiar
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v3i1.1578

Abstract

In the layer of overburden stripping activities in Pit Taman attainment production amounted about 82% of the production target set in the amount of 925,187.2 BCM of production target of 1,120,000 BCM. This is due to the high resistance factor affecting work efficiency so that production is produced by means of unloading and transportation have not been able to achieve the production target. The data obtained in the field in the form of a data cycle time tools obtained from the calculation of the time distribution of each trencher-fit to perform the excavation, swing content, swing empty and loading and conveyance maneuvering, loading, road to disposal, dumping and back to front as well as the calculation of effective working hours will do the calculation of the amount of productivity. After calculating the theoretically obtained by 1,656,454.08 BCM of overburden production for excavator-unloading and BCM 1,405,890.9 for conveyance. To get productivity achieve production targets then do the optimization tools work plan is to optimize. Optimizing plan working hours adjustment tools and repair equipment capacity are obtained overburden production amounted to 1,914,890.2 BCM. As for after the technical review of the excavator-unloading and conveyance in stripping overburden at Pit Taman in September 2016 on the calculation of production trencher-load transports that have been implemented should only use 3 units of excavator-unloading is 3 units of PC Komatsu 2000 for with the use of 3 units with improvements and performance optimization tools as well as the factors that influence has reached its production target of 1,670,167.71 BCM and for the use of conveyances using Komatsu HD 785 20 units with a production target of 1,615,712.8 BCM.
Estimasi Kelayakan Penambangan Bijih Timah Blok Kemingking, Desa Kemingking, Kecamatan Sungai Selan PT Mitra Stania Prima: Tin Ore Mining Feasibility Estimation Block Kemingking, Kemingking Village, District Sungai Selan PT Mitra Stania Prima Daryono, Yuli; Mardiah, Mardiah; Pitulima, Janiar
MINERAL Vol 1 No 1 (2016): Mineral
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v1i1.1602

Abstract

The mining industry is in need of a good planning so that the planned production targets can beachieved at minimum cost and revenue optimally, and can generate cash flow that will maximizerevenue each year over the life of the mine took place. Tin ore mining economic studies based onthe technical design data, so that the determination of the cost will be considered by the company.Components of the economic study of tin ore mining in terms of costing, revenue from the sale ofproducts, the calculation of cash flow, net present value, internal rate of return, payback period,sensitive analysis. Based on the results of studies on tin ore mine PT Mitra Stania Prima BlockKemingking acquired total reserves of tin ore amounted to 2.801,531 tons, by applying the method ofmining Open Pit Mining. From the economic feasibility calculations assuming the bank rate of 12%was obtained net present value of Rp 11.810.941.184.00, internal rate of return of 19.04%, and apayback period of 4.78 months for 2 years. Based on these results the project of PT Mitra StaniaPrima Block Kemingking feasible to continue.
Kajian Teknis Sistem Penerisan Tambang Di Front 2 TB 2.2 Tempilang Bangka Mitra PT Timah (Persero) Tbk: The Technical Study of Mine Drainage System In Front 2 TB 2.2 Tempilang Large Mine of West Bangka PT Timah (Persero) Tbk’S Partner Yuana, Ines; Tono, E.P.S.B Taman; Pitulima, Janiar
MINERAL Vol 1 No 1 (2016): Mineral
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v1i1.1603

Abstract

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 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: Evaluation Of Excavator And Dump Truck Production Capability Means Order To Achieve The Production Target 180.000 Tons Of Coal In October 2015 At Eastern Extention Of Pit Air Laya Limoa Mine PT Bukit Asam (Persero) Tbk UPTE) Inggrid, Maria Jeane; Tono, E.P.S.B Taman; Pitulima, Janiar
MINERAL Vol 1 No 1 (2016): Mineral
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v1i1.1609

Abstract

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.
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 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 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