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Optimalisasi Penggunaan Fly Ash Untuk Reduksi Kadar Besi (Fe) Dan Mangan (Mn) Serta Peningkatan pH Dalam Air Asam Tambang Rofi Taufiqurrahman; Shalaho Dina Devy; Windhu Nugroho; Agus Winarno; Henny Magdalena
Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Vol. 2 No. 3 (2024): September : Manufaktur : Publikasi Sub Rumpun Ilmu Keteknikan Industri
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/manufaktur.v2i3.470

Coal mining activities often result in acid mine drainage (AMD), which can cause environmental pollution if not properly managed. This study aims to evaluate the potential use of fly ash from the Stream Power Plant (PLTU) Tenggarong to mitigate the impacts of AMD, specifically targeting iron (Fe), manganese (Mn), and pH parameters. Acid Mine drainage is formed when sulfide minerals oxidize, producing acidic compounds that can harm the environment. This research focuses on analyzing the ability of fly ash to adsorb iron and manganese from AMD solutions, as well its capability to increase solution pH. Based on the conducted research, the optimum pH value was achieved when using 10 grams and 15 grams of fly ash in the adsorption process. The optimum concentration of iron (Fe) was attained using 10 grams to 15 grams of fly ash, while for manganese (Mn), it was achieved with 20 grams to 25 grams of fly ash. The adsorption process using 25 grams of fly ash showed the highest efficiency in reducing iron (Fe) concentration by 93.78 % and manganese (Mn) concentration by 75.47 %.

Studi Drill Rate Indeks (DRI) Pada Kegiatan Pengeboran Lubang Tembak Pada Formasi Balikapan dan Formasi Pulaubalang PT. Bukit Baiduri Energi Dan PT. Khutai Makmur Insan Abadi Provinsi Kalimantan Timur Ibnu Syafi’i Rhamadany; Tommy Trides; Windhu Nugroho
Venus: Jurnal Publikasi Rumpun Ilmu Teknik Vol. 2 No. 4 (2024): Agustus : Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i4.399

Rotary drilling is one of the drilling methods that is often used for stripping overburden in open pit mining activities. In the rotary drilling process, prediction of the penetration rate is very important for scheduling production and estimating drilling costs. Drilling in mining activities is used, among other things, to create blast holes. In blasting activities, drilling is the first activity that must be carried out to provide a blast hole which will later be filled with explosives to be detonated. Meanwhile, the speed at which the blast hole is prepared is influenced by the speed of the drilling tool to penetrate the rock. Drilling speed is influenced by two factors, namely internal factors and external factors.

Analisis Hubungan Kuat Tekan Uniaksial dan Kuat Tarik Tidak Langsung dengan Metode Regresi pada Batupasir Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Muhlisin Efendi; Revia Oktaviani; Windhu Nugroho
Venus: Jurnal Publikasi Rumpun Ilmu Teknik Vol. 2 No. 4 (2024): Agustus : Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i4.407

Rock strength has an important role in the mining industry. These forces can determine many aspects of mining such as slope geometry, excavation, blasting, and drilling. Rock strength can include tensile strength, compressive strength, and shear strength. In this case, the test is carried out to determine the correlation of uniaxial compressive strength and indirect tensile strength. The method used to determine the correlation of compressive strength and indirect tensile strength is by linear regression approach, which will then be analyzed for accuracy through Root Mean Square Error (RMSE), and Mean Absolute Percentage error (MAPE). This study used quantitative and qualitative methods, starting from the coordinate data of rock sampling locations, physical properties and mechanical properties. In this study, there were 6 sampling locations located in 2 different areas, namely Loa Janan and Sanga-sanga. The secondary data used are regional geological maps and maps of the area where the study is located. Furthermore, secondary data is processed using Arcgis software for mapping, and using Microsoft Excel software to assist in calculations in determining the value of physical and mechanical properties of rocks. The results of the compressive and tensile strength tests in this study showed a perfect corelation using linear regression, namely UCS= 3.9582 σt - 0.4004, with a correlation coefficient (R) of 0.972 and a determination coefficient (R2) of 0.945. and obtained RMSE 0.033 and MAPE 5.89%.

Studi Implementasi Nilai Shale Rating Batulanau dalam Penentuan Alat Gali di PT Bintang Prima Energi Pratama Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Natalis Pasereng; Windhu Nugroho; Agus Winarno
Venus: Jurnal Publikasi Rumpun Ilmu Teknik Vol. 2 No. 4 (2024): Agustus : Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i4.408

The activity of dismantling shale sometimes does not align with the rating of the shale itself. Although shale generally has low durability, some types of shale exhibit considerable strength. Therefore, if the tools used are not suitable, the excavation process becomes inefficient. One shale classification method proposed by Franklin (1982) is by determining the value of slake durability index, plasticity index, and point load index. If the slake durability value exceeds 80 percent, testing continues with point load testing. However, if the slake durability value is below 80 percent, then liquid limit and plastic limit tests are conducted to obtain its plasticity index. This study is applied to the Kampungbaru Formation at PT Bintang Prima Energi Pratama. The shale testing results of the Kampung Baru Formation at PT Bintang Prima Energi yielded slake durability index values below 80 percent, thus the shale ratings based on slake durability index and plasticity index values, for KB1BL1 are 4.2; KB1BL2: 3.5; KB1BL3: 2.55; KB1BL4: 3.35; KB1BL5: 3.15; and KB1BL6: 3.65. With an average shale rating value of 3.57. The excavation tool used for these rocks is a backhoe.

Pemanfaatan Limbah Hasil Pembakaran Batubara Faba (Fly Ash dan Bottom Ash) PLTU Menjadi Paving Block Dian Isnandar; Harjuni Hasan; Albertus Juvensius Pontus; Agus Winarno; Windhu Nugroho
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 2 No. 4 (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.v2i4.603

Water absorption test and compressive strength test were conducted to determine the quality standards of paving blocks. This research was conducted by using a mixture of fly ash, bottom ash and cement. The tests carried out in this study were water absorption test and compressive strength test using 3 compositions of 5%, 8% and 12%. In each composition using 3 samples for testing. Tests were carried out with a vulnerable time between 7 days, 14 days and 28 days. The highest water absorption results in the 8% composition with water absorption of 1.467%. The highest compressive strength results in the 8% composition with a compressive strength of 10.479 Mpa.

PERHITUNGAN KONSUMSI BAHAN BAKAR PADA HD 465 -7R MENGGUNAKAN METODE RPM MESIN DAN PENDEKATAN PER SEGMENT PADA PERUSAHAAN PERTAMBANGAN DI KALIMANTAN TIMUR Pranajiwa; Shalaho Dina Devy; Albertus Juvensius Pontus; Windhu Nugroho; Harjuni Hasan
Indonesian Mining Journal Vol 27 No 2 (2024): Indonesian Mining Journal, October 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol27.No2.2024.1578

Fuel is usually used by engines to move or do work. In this article, the machine is a mining industry vehicle with the code HD 465 – 7R type from the Komatsu company. The vehicle is used to move overburden material from the loading area to the disposal area. Fuel consumption is usually influenced by several factors, the most influential of which are the slope of the road, the type of material used for the road, and the distance from the loading place to the dumping place. There are several methods are used to calculate fuel consumption, the most familiar of which is the vehicle working hours (hour meter) method. In this research, the calculation of fuel consumption uses engine RPM with a segment approach method taken with a segment distance of between 100 - 200 meters. The results of calculating fuel usage on the HD 465 – 7R have a figure of 51.7 liters/hour, with the actual value being 51.9 liters/hour. The conclusion of this research is that by using the engine RPM method, the results of fuel usage calculations are also close to the actual values. Testing by RPM with an hour meter is very different, where testing by RPM is based on the length of duration at that RPM number; the higher the RPM and the longer the duration of time, the greater the fuel released. This is continuous with the road segment, where an uphill road segment will definitely increase travel time due to a decrease in speed, and the RPM will increase.

PERHITUNGAN KONSUMSI BAHAN BAKAR PADA HD 465 -7R MENGGUNAKAN METODE RPM MESIN DAN PENDEKATAN PER SEGMENT PADA PERUSAHAAN PERTAMBANGAN DI KALIMANTAN TIMUR Pranajiwa; Shalaho Dina Devy; Albertus Juvensius Pontus; Windhu Nugroho; Harjuni Hasan
Indonesian Mining Journal Vol 27 No 2 (2024): Indonesian Mining Journal, October 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol27.No2.2024.1578

Fuel is usually used by engines to move or do work. In this article, the machine is a mining industry vehicle with the code HD 465 – 7R type from the Komatsu company. The vehicle is used to move overburden material from the loading area to the disposal area. Fuel consumption is usually influenced by several factors, the most influential of which are the slope of the road, the type of material used for the road, and the distance from the loading place to the dumping place. There are several methods are used to calculate fuel consumption, the most familiar of which is the vehicle working hours (hour meter) method. In this research, the calculation of fuel consumption uses engine RPM with a segment approach method taken with a segment distance of between 100 - 200 meters. The results of calculating fuel usage on the HD 465 – 7R have a figure of 51.7 liters/hour, with the actual value being 51.9 liters/hour. The conclusion of this research is that by using the engine RPM method, the results of fuel usage calculations are also close to the actual values. Testing by RPM with an hour meter is very different, where testing by RPM is based on the length of duration at that RPM number; the higher the RPM and the longer the duration of time, the greater the fuel released. This is continuous with the road segment, where an uphill road segment will definitely increase travel time due to a decrease in speed, and the RPM will increase.

STUDI PENCAMPURAN BATUBARA KUALIATAS RENDAH DENGAN ARANG GERGAJI KAYU SENGON PADA PROSES PEMBUATAN BRIKET Donal; Harjuni Hasan; Agus Winarno; Windhu Nugroho; Shalaho Dina Devy
Jipmor: Jurnal Ilmu Pendidikan Dan Humaniora Vol 2 No 1 (2024): June
Publisher : Institut Pendidikan Alfatah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jipmor.v2i1.16

Abstract: Abstract: This research aimed to discover the percentage of the proximate analysis results in the coal and to discover its effect on the calorific value of the coal it was conducted by obtaining the coal samples to be analyzed, and the samples were then processed to produce the samples ready to testing. The results have shown that variations of adhesive had a significant effect on moisture, ash content, volatile matter, fixed carbon, temperature of combustions while not affected the rate and density and compressive strength. The best treatment from this study was obtained from treatment charcoal and with compostions 50% coal : 50 sengon charcoal with sampel code KH (pulaubalang) and resulting from this treatment briquettes were moisture of 5.99 % ; ash content 6,92 % ; volatile matter 11,42% fixed carbon 75,65% burning rate of 3,74 g/minute; fire ignition 6: 36 minute; density of 0,23 g/cm3; compressive strength of 38,22 kg/cm2. Briquets with composition 50% coal : 50 sengon charcoal with sampel code KP (balikpapan) and resulting from this treatment briquettes were moisture of 6,96 % ; ashcontent 4,73 % ; volatile matter 11,92% fixed carbon 76,39% burning rate of 2,61 g/minute; fire ignition 6: 57 minute; density of 0,21 g/cm3; compressive strength of 24,70 kg/cm2.

Evaluasi Kinerja Unit Coal Crushing Plant Dalam Pencapaian Produksi Di PT. Anugerah Bara Kaltim Kabupaten Kutai Kartanegara Al Mulyadi; Windhu Nugroho; Tommy Trides; Lucia Litha Respati; Agus Winarno
Journal Transformation of Mandalika, e-ISSN: 2745-5882, p-ISSN: 2962-2956 Vol. 4 No. 1 (2023): Januari
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jtm.v4i1.1234

Coal handling facility (CHF) di PT. Anugerah Bara Kaltim sebuah pertambangan yang berwenang melakukan kegiatan peremukan batubara yang merupakan salah satu penentu dari kuantitas produk yang akan dihasilkan untuk memenuhi kebutuhan pasar. Namun sering terjadi masalah-masalah yang memenyabkan tidak tercapainya target produksi. Dilakukan kajian teknis unit crushing plant dan upaya memperkecil hambatan yang terjadi didalam kegiatan peremukan batubara. Target produksi unit peremuk batubara adalah sebesar 541.667 ton/bulan berdasarkan pengamatan dan perhitungan yang telah dilakukan produksi aktual yang didapat hanya 519.305,85 ton/bulan. Target produksi yang belum dapat tercapai terjadi dikarenakan produksi alat peremuk masih rendah dikarenakan hambatan-hambatan yang terjadi. Dari hasil penelitian dan perhitungan yang dilakukan untuk mencapai produksi yang mendekati target produksi unit peremuk batubara maka dilakukan upaya yang dapat meningkatakan produksi, salah satunya dengan perbaikan hambatan hambatan non teknis yang dapat diminimalisir waktu hambatannya. setelah dilakukan perbaikan waktu hambatan. Nilai ketersediaan unit peremuk batubara sebelum perbaikan waktu hambatan adalah sebagai berikut ketersediaan mekanik (MA) = 95,28 %, ketersediaan fisik (PA) = 88,79 %, ketersediaan penggunaan alat (UA) = 95,75 %, penggunaan efektif (EU) = 85,00 %. Penanganan yang dapat dilakukan penambahan umpan pada bulan Juni sebanyak 26.381,38 ton dengan penambahan ritase 35 kali pada bulan Juni, dan pada bulan Juli penambahan umpan untuk mencapai target produksi sebanyak 32,939,06 ton dengan penambahan ritase 44 kali pada bulan Juli dengan penaganan waktu hambatan dan penanganan umpan maka target produksi unit peremuk batubara di PT. ABK dapat terpenuhi.

Pengolahan Air Asam Tambang dengan Limbah Tempurung Sawit untuk Adsorpsi Fe, Mn, dan pH Pond Evo Kristina; Agus Wirnarno; Harjuni Hasan; Windhu Nugroho; Lucia Litha Respati
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 3 No. 2 (2025): Mei : 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.v3i2.814

One of the negative impacts of the mining process is acid mine drainage which is formed from the oxidation of minerals containing iron sulfur, such as pyrite (FeS2) and pyrothite (FeS) by oxidizers such as water and oxygen. To handle or control acid mine drainage, one way is to use activated carbon or often referred to as activated charcoal, which is a type of carbon that has a very large surface area. Charcoal is a porous solid that contains 85% to 95% carbon, produced from materials containing carbon by heating at high temperatures without oxygen (pyrolysis). Activated carbon made from palm shells is an adsorbent that can be used to treat coal mine acid water, so that the water meets standards for flowing into the environment. This study used concentration variants of 4 grams, 6 grams, 8 grams and contact times of 30 minutes, 60 minutes and 150 minutes. The results of this study show that the concentration of palm oil shell activated carbon adsorbent influences the reduction of iron (Fe) and manganese (Mn) metal levels as well as the pH conditions in acid mine drainage water. The higher the concentration and the longer the contact time, the more heavy metals are adsorbed, the contact time is the highest. The optimal concentration in this study was 150 minutes and the optimal concentration was 8 grams with physical activation.

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