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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

Author-ID : 455849

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 Produktivitas Alat Gali Muat dan Alat Angkut dari Pit 1 untuk Pengangkutan Batu Granit di PT Aditya Buana Inter Desa Jurung Kecamatan Merawang Eko Eko Pryatna Gaol; Janiar Pitulima; Alfitri Rosita
MINERAL Vol 4 No 1 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The mining industry sector is an important sector for Indonesia's development (Prasetya and Ernest, 2013). PT Aditya Buana Inter, hereinafter abbreviated as PT ABI, is one of the mining companies that utilize natural resources in the form of rock mining (article 34) Law No. 4 (2009), in this case granite and began mining activities in 2002. The main activities in granite mining consist of stripping the overburden, drilling, blasting, dismantling, loading and transporting to the processing unit (crushing plant) with the distance from the mining front to the processing unit namely ± 1.7 km. Area of 40 Ha Mining Business Permit is located in Jurung village. The granite mining activities carried out by PT ABI are carried out with an open-pit mining system. Based on the PT ABI work plan for the production target of transporting granite in January 2018 is 13,000 BCM, while the actual production is only 9,085 BCM with unattainable 3,915 BCM. The percentage of granite stone production reaches 69% of the work plan target. The cause of not achieving the production target value set by PT ABI can be influenced by several factors, one of which is the ineffective amount of work time wasted. ncreased work efficiency is done by making improvements to avoidable obstacles so that the working efficiency of the loading and excavating tool has increased from 75% to 78% and transportation equipment from 70% to 77.6% with production to 11,139 BCM. Addition of transportation equipment for 1 unit match factor so that it reaches the target of 13,000 BCM

Pengaruh Riffles dan Kemiringan Underflow Sluice Box Terhadap Optimalisasi Pemisahan Bijih Timah Skala Laboratorium Indra Chang; Janiar Pitulima; Guskarnali Guskarnali
MINERAL Vol 4 No 2 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Underflow sluice box is a mineral processing tool that aims to separate the main minerals from associated minerals based on the principle of gravity concentration, which is equipped with boil boxes and underflow riffles as a separation medium in tin ore. The use of laboratory scale underflow sluice box provides Sn concentrate results with high Sn grade and recovery through the influence of underflow riffles and slope positions. Where underflow riffles parameters are in the position of 0.5 cm, 1 cm and 1.5 cm and the slope used is 0 °, 3 ° and 5 °, the experiment is carried out 9 times using 2 kg feed and the same Sn grade in each sample. From the results of the experiment obtained the dry weight and Sn grade concentrates which were analyzed by Sn grade using Grain Counting Analysis (GCA) and recovery calculations. After analysis and calculation, the highest Sn grade was found in sample 9 with underflow riffles position of 1.5 cm, slope of 5 ° and water flow velocity in the water flow velocity at 54 l/minute at 44.61 %, while recovery was highest in sample 3 with underflow riffles 1.5 cm, slope of 0 ° and water flow velocity in the water discharge at 54 l/minute at 99.13 %. Based on these results it can be said that if the underflow riffles and slope position is greater, the recovery and Sn grade concentrates are obtained high and if the underflow riffles and slope positions are smaller, the recovery is high with a low Sn grade concentrates.

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.

Estimasi Kelayakan Penambangan Bijih Timah Blok Kemingking, Desa Kemingking, Kecamatan Sungai Selan PT Mitra Stania Prima Yuli Daryono; Mardiah Mardiah; Janiar Pitulima
MINERAL Vol 1 No 1 (2016): Mineral
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

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 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 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.

Analisis Pengaruh Perubahan Nilai Total Moisture Dan Ash Content Terhadap Nilai Kalori Batubara Di Unit Pelabuhan Pt Bukit Asam Tbk Tarahan Bandar Lampung Alldino Hernanto; Janiar Pitulima; Delita Ega Andini
MINERAL Vol 5 No 1 (2020): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The coal industry emphasizes the quality of coal because quality will always be directly related to consumers and the company's revenue because the higher the quality of coal, the more expensive the selling price of coal, therefore this research was conducted to determine the difference in coal quality in railroad cars (demolition) and when analyzing for stockpile, the effect of total moisture and ash content on coal calories and the factors causing these changes. In this study, qualitative and quantitative methods were used where the steps taken in this research were sampling in the railroad car and in the stockpile and then using the proximate analysis and analysis of coal calories from the analysis and correlation and regression analysis to determine the effect of total moisture and ash content. against coal calories. The proximate analysis of the coal samples is disassembly total moisture which is 8.49% ar, in the stockpile, which is 10.32 % ar ash content demolition which is 5.37, in the stockpile which is 8.62 % ar and the calorific value of demolition is 7181 cal/gr, in the stockpile that is 6800 kal / gr so that each of the total moisture parameters, ash content and calorific value changes by 1.40 % ar, at 3.25 % ar, and by 400 Kal / gr. Based on the regression results, the total effect of total moisture and ash content on the first calorie each increase of 1 % ar the total moisture value will reduce calories by 123.36 cal/gr, each increase of 1 % ar the value of ash content will reduce coal calorific value by 78.76 cal/gr. The change in value is due to the occurrence of contamination in the stockpile area, the occurrence of swabakar in the stockpile, and the influence of high rainfall on coal

Kajian Teknis dan Biaya Kegiatan Rehandling Batubara PT Bukit Asam Tbk Tanjung Enim Sumatera Selatan Rahmad Tanjung; Janiar Pitulima; Delita Ega Andini
MINERAL Vol 6 No 1 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The East Block Muara Tiga Besar Utara mining system uses Shovel and Trucks where the digging stage uses excavators and bulldozers and the transport stage uses a dump truck. Coal production target of Muara Tiga Besar Utara Block Timur in July is 300,000 tons and August is 294,000 tons. The method used in this research is quantitative data analysis method by calculating the productivity of digging and transporting tools, analyzing the technical implementation of coal rehandling activities and analyzing the cost of coal production and rehandling activities. The results of this study obtained the productivity of PC 400 Lc excavator304.35 tons/hour, bulldozer D 375A of 674.61 tons/hour and Hino FM 320FI dump truck equipment of 37.06 tons/hour, the cost of coal production in July is IDR 13,772,009,648.00, in August IDR 13,495,592,315.10 and the cost of coal rehandling activities is IDR 160,685,158.30/month. Based on the cost of coal production and the cost of coal rehandling activities, it can be analyzed that there was a decrease in production costs between July and August due to a decrease in mining production targets in anticipation of coal rehandling activities.

Evaluasi Geometri Jalan Tambang Di PT Vitrama Properti Desa Air Mesu Kabupaten Bangka Tengah Selvira Oktaviani; Janiar Pitulima; Haslen Oktarianty
MINERAL Vol 6 No 2 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

PT Vitrama Properti is a company engaged in mining sector that utilizes natural resources of granite. The condition of mine road at PT Vitrama Properti is not good, causing the lack of transportation productivity in the transportation process. This study aims to evaluate the geometry of the mine road. The method is terrestrial method. Data that obtained are data on straight road width, road width at bends, height differences and bend radius to evaluated with AASHTO. The smallest of road width is 4.67 m, the road width on the smallest bend is 5.8 m, the smallest height difference value is 0.9 m and the smallest radius of bend is 7.695 m. The evaluation results are the width of the haul road on a straight single lane minimum is 6.6 m, the width of the haul road on a straight two-lane minimum is 11.55 m, the width of haul road in two lines minimum bend is 16.485 m, the maximum slope of road is 10%, the superelevation is 4%, and the cross slope is 33 cm.

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.

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

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