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All Journal Indonesian Mining Journal Journal Transformation of Mandalika Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Kendali Teknik dan Sains Jurnal Sains dan Teknologi Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan JURNAL TEKNOLOGI MINERAL FT UNMUL Indonesian Mining Journal Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Venus: Jurnal Publikasi Rumpun Ilmu Teknik Jipmor: Jurnal Ilmu Pendidikan Dan Humaniora
windhu Nugroho
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KAJIAN TEKNIS DESAIN DAN MANAJEMEN PENIMBUNAN BATUBARA DI ROM STOCKPILE PT. BARA MEGA QUANTUM KOTA BENGKULU PROVINSI BENGKULU: Technical Study And Management Design Of Coal Stock At Rom Stockpile PT. BaraMega Quantum, Bengkulu Central Regency, Bengkulu Province M Dandy Al Fansya; Agus Winarno; Henny Magdalena; Windhu Nugroho; Sakdillah
Journal Transformation of Mandalika, e-ISSN: 2745-5882, p-ISSN: 2962-2956 Vol. 3 No. 3 (2022): Maret
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jtm.v3i3.1082

Abstract

Stockpile is a temporary storage place for coal before it is sold to consumers. The stockpile must be properly regulated so that the quality of the coal is maintained, so that when it reaches the consumer it is still of the desired quality. The plan is that in November the coal that will be included in the ROM stockpile of PT. Bara Mega Quantum will experience changes, both in quality and quantity. This study aims to determine the readiness of the stockpile to face the planned increase in coal production. PT. Bara Mega Quantum has a ROM Stockpile which is located southwest of the mining site, precisely located in the coal processing area on Pulau Baai Terminal Coal PT. Pelindo Bengkulu, Kampung Melayu District, Bengkulu City, Bengkulu Province. Where the distance between the pit and ROM Stockpile is approximately 67 km. The processing area consists of ROM Stockpile, Hopper, and Jetty Loading. Based on calculations from rainfall data, the total water discharge entering the ROM Stockpile area is 4393,67 m3/day. To accommodate this amount water, sufficient dimensions of the settling pond are needed to prevent overflow. Based on the data processing carried out, the dimensions available sludge settling pond are 5960 m3. The height of the coal pile is taken based on the specifications of the Whell Loader with the Komatsu 350 type. The following is a picture of the dimensions of the Whell Loader with the Komatsu 350 type used in the ROM Stockpile activity by PT BMQ. In accordance with the design that has been made and the data that has been processed for the capacity of the coal stockpile on the ROM Stockpile, namely on ROM 1, ROM 2 and ROM 3, the volume obtained is 20214.58 m3 and for tonnage 26278,95 MT.
Estimasi Biaya Alat Muat Dan Angkut Penambangan Quarry Batu Andesit PT Putra Elan Balindo Pada Kota Palu Sulawesi Tengah Indri Tenri Datu; Henny Magdalena; Windhu Nugroho; Lucia Litha Respati; Harjuni Hasan
Jurnal Sains dan Teknologi Vol. 2 No. 2 (2023): Desember : Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/saintek.v2i2.253

Abstract

PT. Putra Elan Balindo is a company engaged in the mining sector specially the andesite minerals domiciled in Palu City. PT. Putra Elan Balindo located in Watusampu Village, Ulujadi District, Palu City, Central Sulawesi, which has an IUP (Mining Business Permit) with an area of 17.89 Ha. To achieve production targets set by the company using a combination of tools mechanics in the form of Excavator Komatsu PC 400 and Dump Truck Hino FM 260 JD, where there is currently only 1 Excavator while the Dump Truck is 2 are needed with a production target of 20,000 m3 per month and have 1 shift working hours. Based on the results of research carried out for one month, it shows that the productivity of the Komatsu PC 400 Excavator is 174.29 m3 / hour and the Hino FM 260 JD Dump Truck is 197.69 m3 / hour for 2 transport equipment. The cost of owning a Hino FM 260 JD Dump Truck is Rp. 476,190/hour and the cost of owning a Komatsu PC 400 Excavator is Rp. 267,857/hour while operational costs for the Hino FM 260 JD Dump Truck are Rp. 1,862,072/ hour and operational costs for a Komatsu PC 400 Excavator Rp. 2,135,421/hour.
Studi Perhitungan Pencampuran Batubara Dengan Pemrograman Linear Untuk Memenuhi Kriteria Permintaan Konsumen Di PT. Alamjaya Bara Pratama Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Rifki Amin Ma’sum; Windhu Nugroho; Shalaho Dina Devy
Jurnal Sains dan Teknologi Vol. 3 No. 1 (2024): Juni : Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/saintek.v3i1.321

Abstract

Consumer market demand for certain specifications of coal continues to increase every year. However, each coal company has a variety of coal qualities in terms of calorific value, water content, ash content, and total sulfur and so on. PT. Alamjaya Bara Pratama is a coal mining company that has several types of coal products that vary in quality. By coal blending, the aim is to obtain coal product that meet the target with a homogeneous composition and according to consumer coal quality specifications. With the linear programming method for coal blending calculations using the Production and Operation Management - Quantitave Methods software has an influence in maximizing the use of the composition quantity for each type of product (MD and HS) as well as optimizing the quality of the coal blending results. Through POM-QM, it has the advantage of being able to determine the benchmark target value for one of the desired coal quality parameters. With subbitumious coal quality as for the research results are calculations of the final quality for each Mother Vessel, one of which is MV Eastern Camelia with the planning results is (AC 5,0% adb, TS 0,90% adb, GAR 4590 kcal/kg arb) with tonnage requirements for coal products (MD = 29.727,84 MT and HS = 22.772,16 MT). Through the use of linear programming (POM-QM) in calculating coal blending planning, the results are obtained and meet each coal quality parameter limit criterion based on consumer demand.
Analisis Penggunaan Campuran Material Batupasir dengan Batulempung untuk Material Perkerasan Jalan Tambang di PT Belengkong Mineral Resources Site Insani Baraperkasa Kabupaten Kutai Kartanegara, Kalimantan Timur Muhammad Rayhan Fhadillah; Agus Winarno; Oktaviani, Revia; Tommy Trides; Windhu Nugroho
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

In this planning, it is assumed that the CBR value of the subgrade used is the result of taking the CBR value of the field. From the results of the field CBR values obtained 7.158%. Based on Hasi plotting obtained a thick figure of 18.6 inches. That is, that the total thickness must be at least 18.6 inches above the subgrade. Road layer structure planning recommendation for 7.7 in thick subbase course using Clay R50 % sample with CBR value 29.31%, 7.3 in thick base course using Clay R40 % sample with CBR value 32.11%, and 3.1 in thick surface course using Clay R30 % sample with CBR value 36.87%.
Penentuan Tinggi Stemming Dan Jarak Burden Berdasarkan Jarak Flyrock Di Pit Inul Middle Panel 3 PT. Kaltim Prima Coal Kalimantan Timur Yekeskiel Nimsi; Windhu Nugroho; Oktaviani, Revia
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Stripping overburden using the blasting method is more economical than using equipment. One of the impacts caused by blasting activities is flyrock. Flyrock influences how far people and units have to be evacuated during blasting activities, so by controlling flyrock the evacuation distance can be reduced based on existing studies, in accordance with Ministerial Decree No. 1827.K/30/MEM/2018. By using the Richard and Moore equation, the distance of the flyrock throw can be predicted by approaching constant values ​​adjusted to the actual conditions at Pit Inul Middle. The research results show that there are several factors that influence the occurrence of flyrock, namely burden with a coefficient of determination value of 0.5183 and stemming height with a coefficient of determination value of 0.4142. Both of these factors have a moderate (medium or sufficient) correlation with flyrock. The actual average distance of flyrock that occurred during data collection was 11.58 meters and the furthest was 39.74 meters. By knowing the prediction of the maximum flyrock throw and considering the safety factor of the equipment, standard values ​​for the stemming and burden height variables can be set, namely a minimum of 2 meters.
Perhitungan Kehilangan Batubara Pada Kegiatan Penimbangan Sampai Tongkang di PT Multi Harapan Utama Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Ilma Nurjanah; Agus Winarno; Henny Magdalena; Windhu Nugroho
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The research was conducted at the stockROM owned by PT Multi Harapan Utama (PT MHU) which is managed by PT Mitra Terminal Kaltim. In the process of receiving to shipping coal, factors that cannot be avoided. The amount of coal loss from weighing to barge in May was 1,955 tons with factors that caused the loss, namely in the process of weighing, transporting, stacking, and crushing coal and loading on barges, taking test samples and operator negligence. Referring to the reference coal price of the Ministry of Energy and Resources (ESDM) in May 2023 PT MHU has the potential to experience a loss of Rp. 5.251.062.510.
Faktor Penyebab Kehilangan Batubara Di Pit 15 PT Multi Harapan Utama Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Siti Asmasari; Agus Winarno; Tommy Trides; Windhu Nugroho; Shalaho Dina Devy
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The research was conducted in pit 15 of PT Multi Harapan Utama. In the process of mining activities in pit 15 in May 2023 in seam 14, 14X, 14XL, 15U, 15U1, and 15U2. There are several activities that result in coal losses, the amount of coal loss is 685 tons so the mining recovery is 98.74%. Coal loss in pit 15 occurred due to incomplete coal mining, coal re-cleaning, scattered coal not directly transported to the stockpile, waterlogged loading points, coal weighing, and distance of coal survey data collection.
Perilaku Tanah Longsoran di Jalan Sultan Sulaiman Kecamatan Sambutan, Samarinda Kalimantan Timur Oktaviani, Revia; Benny Christian BB; Windhu Nugroho; Tommy Trides; Albertus J Pontus
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Clayey silt is one of the soils that cause many problems in infrastructure. The nature of clay depends on the dominance of the minerals it contains, this can give different behavior between clayey silt in one place and clayey silt in another place. This study aims to determine the behavior of clayey silt material in landslides on Sultan Sulaiman Road, Sambutan sub-district of Samarinda and find relationships between its physical properties including plasticity index relationship with water content and swelling. USCS classification results are included in the silt (ML) group. From the test results of moisture content ranged from 26.3% - 36.3%, Atterberg boundary tested resulted in a soil plasticity index of 28.7%, 17.3%, 14.7%, 14.7%, 13.8%, 2.6% and has an average of 15.3%. The average development percentage obtained is 1.7%, so the expansive degree of development potential is still in the low category, while the resulted of the landslide development pressure test are 135 kPa, 130 kPa, 66 kPa, 64 kPa, 39 kPa, 35 kPa with an average result of 78.2 kPa, also included in the low development potential group.
Desulfurisasi Batubara Dengan Metode Leaching Menggunakan Naoh Dan HCL Di PT. Anugerah Krida Utama, Kutai Kartanegara, Kalimantan Timur Widya Indriani; Tommy Trides; Windhu Nugroho
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 2 No. 1 (2024): Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v2i1.163

Abstract

The utilization of coal as a fossil fuel causes several ecological problems, as for the consequences of the coal combustion process, namely pollution and emissions. Combustion of high sulfur coal produces sulfur dioxide gas (SO2). This sulfur dioxide (SO2) will become H2SO4 (sulfuric acid) which can directly or indirectly disrupt human life, such as causing acid rain, causing tightness in the respiratory tract and causing corrosion and shortening the life of factory equipment. To reduce SO2 gas, a reduction in sulfur content is carried out before combustion which is called desulfurization. This research was conducted using the leaching method with variations in leaching agent and solution concentration. Leaching agents used in this study are NaOH and HCl. The coal to be desulfurized is coal from PT Anugerah Krida Utama with an initial total sulfur content of 4,05% adb. 10 grams of coal with a size of 0,212 mm was leached with 250 ml of chemical solution using a hot plate stirrer at 80˚C and 250 rpm for 1 hour. The results showed that the optimum condition for leaching agent NaOH occurred at a concentration of 8 M showing the initial total sulfur content of 4,05% adb decreased to 1,69% adb with a maximum percentage decrease of 58,27% and at leaching agent HCl the optimum condition occurred at a concentration of 1 M showing the initial total sulfur content of 4,05% adb decreased to 2,91% adb with a maximum percentage decrease of 28,14%.
Studi Tingkat Erodibilitas Tanah Pada EX Disposal Pit A1 PT Kintan Putri Mandiri Subcon PT Anugerah Krida Utama Kecamatan Marangkayu Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Putri Pebrian; Windhu Nugroho; Agus Winarno; Shalaho Dina Devy; Albertus Juvensius Pontus
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 2 No. 2 (2024): April: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sip
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v2i2.231

Abstract

Soil is an important component in the natural environment which has an important role in supporting human life and the ecosystem as a whole. One key aspect of soil properties is its erodibility, which determines how susceptible the soil is to erosion. This research aims to assess the level of soil erodibility in the disposal area, which is the location where overburden is deposited in coal mines. Soil erodibility is influenced by a number of factors, including texture, structure, organic matter content, and soil permeability. Laboratory analysis methods are used to measure soil erodibility from samples taken from the disposal area. The results of this research provide a deeper understanding of the potential for erosion in disposal areas and provide a basis for the development of effective erosion control strategies to minimize environmental and mine operational impacts. These findings are important for the coal mining industry in managing the environment sustainably and ensuring the continuity of their operations.
Co-Authors Agus Winarno Agus Winarno Agus Wirnarno Agus Winarno Al Mulyadi Albertus J Pontus Albertus Juvensius Pontus Anggi Permatasari Anisah Azizah Ardhan Ismail Bagus Hidayat Benny Christian BB Bunga Bunga Dian Isnandar Donal Evita Endar Apriliana Evo Kristina Faras Dwi Putra Ferry Potik Kurniawan Gideon Samari Suno Hamzah Umar Harjuni Hasan Henny Magdalena Ibnu Syafi’i Rhamadany Ilma Nurjanah Indri Tenri Datu Jhony Maxi Harjadi Liganic Saprudin Lucia Litha Respati M Dandy Al Fansya M. Dwi Triosusanto Ma Revia Oktaviani Marlinus Matius Lollong Muhammad Ashar Alias Suara Muhammad Rayhan Fhadillah Muhlisin Efendi Natalis Pasereng Nirwana Putri Nur Muhammad Agung Orfinada Sultan Danilof Orisius Oktavianus Pranajiwa Putri Pebrian Rety Winonazada Revia Oktaviani Revia Oktaviani Rifki Amin Ma’sum Rofi Taufiqurrahman Sahar S Sahrul Ramadhana Sakdillah Sakdillah . Sakdillah Sakdillah Salaho Dina Devy Setiawan Tandi Shalaho Dina Devy Shalaho Dyna Devy Siti Asmasari Tommy Aria Pradana Tommy Trides Widya Indriani Yekeskiel Nimsi Yudi Sapta Prastya