Taman Tono - Academia.edu (original) (raw)

Papers by Taman Tono

The process of mining granite in PT Aditya Buana Inter is mined with an open pit (quarry) system.... more 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 386 holes of explosive holes obtained, the total institutional volume was 199.996 m 3 (BCM) and the total volume of blasting was 13001, 7 m 3 (BCM) of the target company of 16,000 m 3 (BCM) / month. Drilling and blasting activities to produce blasting volumes of course there are factors that influence these activities. Factors that influence drilling and blasting activities affect the costs incurred and the volume of blasting results produced, the factors that influence these activities include: weather, front conditions, equipment damage, less optimal blasting geometry measurements. The activity is certainly not inseparable from the costs that must be incurred by PT Aditya Buana Inter both fixed costs and variable costs. The total costs incurred by PT Aditya Buana Inter on September 2, 2018 to October 4, 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 m 3 the volume of blasting yield is Rp 14,003 /m 3. Break even points obtained from calculations for units are 812,468 m 3 and in rupiah Rp 181,992,901.00. PT Aditya Buana Inter income from the sale of split stone is Rp 472,846,080.00 obtained from the sales volume of 2110.92 m 3 with a selling price of Rp 224,000 /m 3 , the profit (L) obtained is Rp 90,610,140.00. Calculation of Break Even Point analysis can determine the minimum amount of volume of rock from the blasting that will be produced and to find out the condition of the company not making a profit and also not losing.

The process of acid mine drainage in settling pond Pit 3 Barat Banko Barat PT Bukit Asam Tbk uses... more The process of acid mine drainage in settling pond Pit 3 Barat Banko Barat PT Bukit Asam Tbk uses quicklime for berries carried out in the first inlet or pond channel. The pH value after the neutralization process has fulfilled the environmental quality standard value of 6-9 but the use of quicklime is less effective because it does not match the amount of water in the settling pond Pit 3 Barat Banko Barat. This can affect the economic use of quicklime in the Settling Pond. Therefore, testing and recalculation are needed in order to know the amount of quicklime to neutralize acid mine drainage and the cost of using lime needed based on the volume of water in the settling pond. The actual data in the field for the use of quicklime is 0.4 gr / l to be able to centralize acid mine drainage in accordance with environmental quality standards. This research method is testing 13 samples of acid mine neutralizing water in the laboratory with the addition of quicklime in order to calculate the amount of quicklime and the cost of using quicklime which is needed to neutralize acid mine drainage. Test results in the laboratory obtained a dose of quicklime of 0.2 gr / l to be able to neutralize the water to fit Environmental Quality Standards with an initial pH value of 3.43 to 7.11 after adding quicklime. The volume of water used is the settling pond volume which is 3,600,000 l. The amount of quicklime needed after testing in the laboratory is 18 sacks, while the actual amount of quicklime used in the field is 36 sacks. The actual cost required in using lime based on data in the field is Rp 1,224,000.00 and the cost of using quicklime based on laboratory testing data is Rp 612,000.0

PT Bukit Asam (Persero) Tbk is one of the BUMN which is engaged in coal mining. This research was... more PT Bukit Asam (Persero) Tbk is one of the BUMN which is engaged in coal mining. This research was conducted in Pit 3 East West Banko operated by the contractor. The process of stripping overburden the difference in volume measurement survey overburden calculations progress ritation conveyance of overburden in one period, this can cause losses, therefore analysis overburden dumps.The study was conducted through a survey progress overburden, by measuring the elevation of each stage disposal area using Global Positioning System (GPS), then processed using Software Minescape to get volume of the preliminary draft and volume accumulation from February to October 2016 and then compared with the volume of every ritation to get a correction of cargo carrying means of each ritation. Testing of native soil specific gravity and material of disposal area to get a percentage compaction ofmaterial.The results showed the initial draft disposal volume amounted to 2,508,449.9 m 3

The tendency of increasing demand for limestone as one of the raw materials for making cement, it... more The tendency of increasing demand for limestone as one of the raw materials for making cement, it is necessary to have appropriate mining to fulfill these needs. The importance of synchronization of loading and hauling equipments in working optimally and efficiently will influences the ability of mechanical devices in productivity. Match factors can find out the comparison of the number of loading and hauling equipment working in mining operations. Analysis of the calculation of match factors based on the circulating time of mechanical devices and the number of devices operating, data taken 30 times a month in July 2018. The primary data such as; circulation time of mechanical devices, resistance factors, bucket and vessel real capacity, effective working time of devices and number of devices, while secondary data such as; devices specifications, devices and operator work time, layout maps, rainfall and company production targets. The research method used is the calculation and analysis of quantitative data on factors that influence the ability of mechanical devices in production. The production target for limestone mining in pit 242 is 350,000 tons / month using a Hitachi ex 2500-6 Excavator unit synchronized with five units of Dumptruck Komatsu HD 785-7. Current devices production capability is 262,198.66 tons / month with a value factor of 0.80. The problem that occurs is not yet achieved the planned production target, this is due to the still low effective working time and work efficiency as a result of existing constraints. Efforts to increase production can be done by improving the effective working time of initially 637.99 minutes per day to 707.30 minutes per day or 81.29% of the total available working time, adding the number of bulk filling to 6 times and adding transportation equipment as many as two units, so that production increased to 361,415.82 tons per month and the value of the match factor for mechanical devices increased to 0.96.

Tailings are the result of the process of mining or processing mineral ore which is considered to... more Tailings are the result of the process of mining or processing mineral ore which is considered to have no economic value. The g in the tailings as evidence that there are losses of cassiterite minerals that are also wasted is still of economic value. To reduce losses of cassiterite minerals in tailings, the tool used is the secondary lobby box. The washing of tin tailings was carried out 6 times including the flowrate and the speed of the water flow given differently affected by the opening of the water faucet that 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 kg each (0.47% Sn). At faucet position 15⁰ flow rate of 20.5 l/minute and water flow rate of 0.017 m/sec produced 1.19% Sn and recovery at 76%, position 30⁰ flow rate of 23.5 l/minute and water flow rate of 0.020 m/sec produced 1.22% Sn and recovery at 73%, position 45⁰ flow rate of 26 l/minute and water flow rate of 0.022 m/sec produced 1.25% Sn and recovery at 68%, position 60⁰ flow rate of 28.7 l/minute and water flow rate of 0.025 m/sec produced 1.28% Sn and recovery at 65%, position 75⁰ flow rate of 32.6 l/minute and water flow rate of 0.028 m/sec produced 1.30% Sn and recovery at 53%, and position 90⁰ flow rate of 41 l/min and water flow rate of 0.035 m/sec produced 2.26% Sn and recovery at 50%. The highest concentration of 2.26% Sn and the desired recovery in the tailings separation process is the lowest recovery of 50% in the 90⁰ faucet position. This shows that the process of separating products in the form of tailings has increased significantly from the feed content of 0.47% Sn to 2.26% Sn and transforming tailings products into economically valuable ores.

In 2017 PTBA plans to open pit mining in Banko Barat Pit II uses a system of drilling and blastin... more In 2017 PTBA plans to open pit mining in Banko Barat Pit II uses a system of drilling and blasting. Drilling and blasting activities aimed memberai hard material to support the process of making material by excavator-unloading With limited human resources drilling and blasting is currently assisted by partners. To get the maximum benefit with minimum cost necessary to study the cost of drilling and blasting between using the cost of services partners or self-management tool by PTBA.Planning of drilling and blasting costs PTBA version used by the method of self-management tools while the costs of drilling and blasting use the services of the partnership using the mail service offering. Geometri blasting used method R.L Ash so that would be obtained comparative cost planning and drilling and blasting between PTBA and partner services.The cost of drilling obtained using a self-management tool values obtained Rp 13.021.982.688/tahun, while using the services of the partnership obtained the value of Rp 26.472019.517/year. The cost of blasting using a self-management tool values obtained Rp 44.767.919.566/year, while using the services of the partnership obtained the value of Rp 51.750.738.054/year. The total cost of drilling and blasting self-managed appliance obtained the value

Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung, Aug 15, 2018

BWD Kundur 1 is an offshore tin mining production facility of PT Timah Tbk which operating in Pen... more BWD Kundur 1 is an offshore tin mining production facility of PT Timah Tbk which operating in Penganak Sea and Air Kantung Sea. Before the activity of mining, mine planning is required for guidelines in the field conditions. At the site of Air Kantung Sea, soil surface are at shallow depths, so the opening of werk takes a long time in order to reach the kaksa. As an alternative can be used Stripping Suction Dredge for excavation of top soil, and BWD Kundur 1 can focus on excavation of kaksa. Mine planning considers the economical analysis of mining and operation of BWD Kundur 1 whereas the calculation of reserves and work block creation with Micromine Software uses two methods of mining namely BWD Kundur 1 and the combination of Stripping Suction Dredge with BWD Kundur 1. Based on the calculation, in 2018 the value of break even point in amount of 54.9 tonnes ore/month and the break even grade in April in amount of 0.439 kg/m 3 , May to October in amount of 0.220 kg/m 3 , and November to December in amount of 0.302 kg/m 3. The location of BWD Kundur 1 is in Penganak Sea with 500 h/month and LPT 550 m 3 /h, while in Air Kantung Sea with 400 h/month and LPT 500 m 3 /hour by using short face system and press method. Combination of Stripping Suction Dredge with BWD Kundur 1 reduces the number of production hours and minimizes mining operating costs. After the calculation, it was obtained Tdh an average of 0.386 kg/m 3 and Pdh 692 tons with an average production in amount of 77 tons/month. The Production BWD Kundur 1 is 3,612 hours and Stripping Suction Dredge is 285 hours, with 438 hours saving time and mining cost savings in amount of Rp 2,936,212,747.00.

Coal production target in East extension of TAL Limoa Front was 180.000 ton/month in October 2015... more Coal production target in East extension of TAL Limoa Front was 180.000 ton/month in October 2015 but the target achieved only 115.967,59 ton with the percentage achievement of production target at 64,4 %. Therefore it was necessary to evaluate performance of Dozer Ripper D375 number series DZ 521. The evaluation conducted by taking primer actual data in mine site such as cycle time, work distance, work effeciency, Ripper penetration and then the collecting data was processed to make reparations of DZ 521 type of D375 Ripper with the aim to meet the production target. The achieved production after prior evaluation conducted by increasing work time effeciency was 162.826,57 ton with the production achievement percentage at 90.45 % and the lack production was 17.173,43 ton, a further evaluation was conducted by repairing of Ripper penetration performance and the production was 206.138,22 ton with the production achievement percentage at 114% and the exceed production was 26138,22 ton. Then work time efficiency and Ripper penetration was improved to 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/day maybe can back up the problems on location production. The evaluation had been met coal production target of Limoa Front.

Nilai efisiensi kerja pada front penambangan TB Pemali tahun 2018 tergolong rendah (57,16%), sehi... more Nilai efisiensi kerja pada front penambangan TB Pemali tahun 2018 tergolong rendah (57,16%), sehingga perlu dilakukan kajian perbaikan efisiensi kerja agar sesuai kaidah teknik pertambangan yang baik. Metode yang dilakukan meliputi tahap persiapan, pengumpulan data, serta orientasi di lapangan, yang selanjutnya dilakukan pengolahan data diantaranya: Menghitung efisiensi kerja alat gali muat dan angkut pada front penambangan, menganalisa kinerja operator serta kondisi alat pada front penambangan, serta menganalisa perbaikan efisiensi kerja. Sehingga, diperoleh nilai efisiensi kerja aktual alat gali-muat yaitu 62,74%, serta untuk alat angkut yaitu 57,68%. Rendahnya efisiensi kerja pada front penambangan disebabkan oleh besarnya waktu breakdown pada alat angkut serta kinerja operator yang rendah. kemudian dilakukan perbaikan efisiensi kerja dengan mengurangi batas toleransi waktu hambatan tidak tetap operator sebesar 35% dan mengurangi waktu indent sparepart yang rusak, dengan begitu diperoleh efisiensi kerja alat gali-muat pada front penambangan sebesar 66,27% serta untuk alat angkut sebesar 66,44%.

IOP conference series, Nov 1, 2021

Pangkalpinang city is one part of Bangka Belitung Archipelago Province which has an area of 118.4... more Pangkalpinang city is one part of Bangka Belitung Archipelago Province which has an area of 118.41 km2 with seven districts and consist of forty-two villages. Based on its location on the eastern part of bangka island make pangkalpinang closer to the coast and watersheds so that it can be said it have a relatively low average land elevation (topography) with a height of 20-50 meters above the sea with a slope of 0-25 %. The research was carried out quantitatively and qualitatively with the parameters of determining the administrative boundaries of each district, the selection of applicable rules regarding the applicable land use zoning or spatial planning (RT/RW), topography, surrounding watersheds, and population density of settlements in Pangkalpinang City. These parameters are then carried out using overlay, scoring and layout techniques to see the distribution of the flood vulnerability level pattern. The results showed that flood vulnerability (very vulnerable) with low topography (0-10 meters above sea level) was in the northwest area of Bukit Intan District and Taman Sari District. Flood vulnerability (vulnerable to less vulnerable) with moderate topographic values (10-19 meters above sea level) is in Gerunggang and Gabek Districts, while vulnerability is not vulnerable with high average topographic values (above 20 meters above sea level). in the northern part in the Districts of Gerunggang, Gabek, and Pangkalbalam. In the northwest part of Pangkalpinang City, if there is an increase in tides or high rainfall intensity, the area will be inundated (flooded).

PT Menara Cipta Mulia is a primary tin mining company. The primary tin ore processing process inc... more PT Menara Cipta Mulia is a primary tin mining company. The primary tin ore processing process includes comminution, sizing and concentration activities. The stage of primary tin ore comminution begins with the crushing process using a jaw crusher and then refined using a ball mill again. Ball mill is a form that is used to shrink the grain size of materials to obtain finer materials (fine materials) and preparation of the right size for the concentration process, namely size 60.degree.-200 mesh. Variable ball mill settings that are not appropriate welcome coarse ball mill scouring material (20 s.d. 50 mesh), so we need to do the grinding again because the minerals have not been taken from the impurity minerals. The ineffective process of grinding primary tin ore records high production costs. The experiment was carried out with bait stimulating variables 3-4 TPH, 4-5TPH, and 5-6 TPH. The bait size is 0-2 cm, 0-4 cm and 0-6 cm. The air rate is 4.436 l/h, 7.394 l/h, and 11.091 l/h. The experiment was conducted 27 times with the combined formula for the results of scouring the ball mill. Based on the experiments carried out, the right material for the process of concentration size 60 s.d. Was obtained.-200 mesh, because the size of the mineral has been released from the impurity minerals. The smaller feed bait, bait size, and air flow obtained from the materials resulting from the grinding of ball mill 60 mesh up to-200 mesh height. Effectiveness of grinding get in sample 19 with the highest production value of 5 s.d. 6 TPH. This parameter is used to get the right results for the concentration process, which is 60 mesh size.-200 mesh. The effective value of the feed rate variable 5 d. 6 TPH, feedback size 0-2 cm, and water rate 4.336 l/h.

MINERAL

Industrial-scale Magnetic Separator is used to process tin ore by separating magnetic and nonmagn... more 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 ...

MINERAL

PT ABI is a private company engaged in the granite mining business using the open pit method. The... more 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 optimiz...

MINERAL

The work efficiency value on the TB Pemali mining front in 2018 is relatively low (57.16%), This ... more 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 inden...

Gaziosmanpasa Universitesi Sosyal Bilimler Arastirmalari Dergisi, 2021

Öz-Toplumsal cinsiyet kimlikleri toplumsallaşma ve kültürel süreçler neticesinde elde edilmektedi... more Öz-Toplumsal cinsiyet kimlikleri toplumsallaşma ve kültürel süreçler neticesinde elde edilmektedir. Bu bağlamda kurgulanan kadınlık ve erkeklik kimliğinin mekândaki karşılığı ise özel alan ve kamusal alan ayrımıdır. Kadınlar/Kadınlık özel alanla özdeşleştirilirken özel alanının dışındaki mekân erkeklerle/erkeklikle özdeşleştirilmiştir. Cinsiyete dayalı işbölümü bağlamında kadınlar ev içi yükümlülüklerin yürütücüsü konumunda olmuşlardır. Bu yükümlülükler toplum, mekân ve zaman dolayımında farklılık göstermekle birlikte, 'kadın işi' olarak değerlendirilmeleri bakımından ortaklık gösterirler. Ancak 'kadın işi' olarak değerlendirilen bu yükümlülükler bazı zamanlarda nicelik ve nitelik açısından değişebilmektedir. Örneğin olağanüstü kriz dönemlerinde kadının ücretsiz emek alanı ile ücretli emek alanındaki varlığı etkilenebilmektedir. Bu çalışma, kadınların ev içi yükümlülükleri üzerinde Covid-19 pandemi sürecinin etkilerini tespit edip çözümleme amacı taşımaktadır. Bunun için Türkiye genelinde kartopu tekniği ile ulaşılan 135 kadınla yapılandırılmış görüşme planı üzerinden görüşmeler gerçekleştirilmiştir. Ardından görüşmelerden elde edilen verilerin nitel çözümlemesi yapılmıştır. Sonuç olarak olağanüstü kriz dönemlerinden biri olarak Covid-19 pandemi sürecinde kadınların ev içi yükümlülüklerinin arttığı gözlemlenmiştir.

Eastern Extension of Pit Air Laya Limoa Mine was one of Air Laya Mine site that has coal miningbu... more 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 effect...

Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung, Aug 15, 2018

IOP conference series, Nov 1, 2021

MINERAL

Gaziosmanpasa Universitesi Sosyal Bilimler Arastirmalari Dergisi, 2021