Coal mining activities at PT Ulima Nitra Site BKL use an open-pit mining method (surface mining). The open-pit mining method forms a large depression, causing water entering the pit to potentially accumulate and create ponding if not properly managed, as the water comes from runoff flowing into the pit. Based on field observations, the main sump at PT Ulima Nitra Site BKL, with a volume of 34,9…
Geometri jalan adalah faktor utama yang erat kaitannya dengan aktivitas alat angkut, jika geometri jalan ini masih tidak sesuai dengan standarnya dan ditambah dengan kondisi permukaan yang juga kurang baik, dapat berakibat pada peningkatan cycle time sehingga menyebabkan produktivitas dari alat angkutnya menjadi menurun. Oleh karena itu, perlu untuk melakukan analisis geometri jalan agar dapat …
PT Bumi Sekundang Enim Energy has an area of 14,960 ha for coal mining. One of the factors that causes the company to increase its production target in 2024 is because the need for coal is increasing. In the previous year the production target was set at 1,000,000 Metric Tons and it is planned to increase it in 2024 to 2,000,000 Metric Tons. In order to support the achievement of increasing pro…
The coalliquefaction technique used in this research is direct liquefactionof solvent derivatives into DCLyield product, which is an analogy of combining solvent extraction and catalityc liquefaction processes. This method is able to solve the technological problems of processing low-grade coal (lignite) into liquid fuels using materials and materials available in the market and the surrounding…
PT. Bukit Asam Tbk adalah salah satu perusahaan tambang di Indonesia yang beroperasi dalam bidang penambangan dan penjualan batubara. Kegiatan penambangan batubara di PT Bukit Asam Tbk direncanakan dalam sekuen penambangan bulanan. Kondisi aktual di lapangan menunjukkan terjadi ketidaksesuaian dan ketidaktercapaian terhadap rencana sekuen penambangan. Tujuan penelitian ini adalah untuk mengetah…
Pit design optimization is a crucial stage in mining operations as it determines the final pit limit that is technically and economically optimal. This study was conducted at PT Ulima Nitra, Tbk., Wiraduta Sejahtera Langgeng Site, Pit Block 2 DUE, Muara Enim, South Sumatra. The aim of this research is to design an optimized pit by considering the mining boundary and coal contract price to maxim…
This study aims to determine the best operating conditions based on the effect of Ni/C catalyst weight percentage and temperature on hydrocracking of lignite coal pyrolysis products. The hydrocracking process was carried out using variations in catalyst weight percentage of 5, 10, 15, dan 20% also using temperature variations of 400, 450, 500, 550, and 600°C. Catalyst characterization was cond…
In this research, lignite coal is used as raw material for making coal oil. The method used is the pyrolysis method using temperature variations of 450-600°C. The coal oil resulting from pyrolysis was analyzed using GC-MS, %yield, specific gravity, and heating value. The optimal temperature obtained in the lignite coal pyrolysis process is 500°C. The results of GC-MS analysis showed that the …
Open-pit mining requires safe slope designs, as instability can lead to failures such as the landslide that occurred at the lowwall of Pit 1 North Block at PT Ulima Nitra Tbk. Variations in lithology and increases in groundwater saturation heighten the risk of slope failure, necessitating a comprehensive technical assessment. This study aims to analyze geotechnical parameters, determine the act…
PT Bahana Selaras Alam adalah perusahaan konsultan pertambangan dan perusahaan jasa pertambangan terintegrasi yang berbasis di Indonesia. Dengan luas area kerja 68.85 ha, perusahaan ini menargetkan produksi sebesar 626.072,32 ton batubara dan 1.233.996,49 pada tahun 2024. Maka dari itu diperlukan adanya perencanaan dan redesign pit, kapasitas disposal, dan banyaknya unit yang dibutuhkan agar ta…
PT. Bukit Asam Tbk is one of the coal mining companies that employs open-pit mining to extract coal. After the mining activities are carried out, reclamation activities are then implemented. The background of this research is that environmental damage often occurs in every mining activity, including the degradation of environmental quality, such as ecosystem destruction, and even poses a threat…
PT Victor Dua Tiga Mega adalah perusahaan pertambangan dalam bidang batubara. Penelitian ini mengambil physical availability peralatan dari Bulan November 2024 – Januari 2025. Lifetime merupakan umur dari peralatan sejak alat tersebut pertama kali digunakan sedangkan Physical availability merupakan kemampuan fisik alat untuk melakukan pekerjaannya secara maksimal tanpa adanya kendala kerusaka…
PT Victor Dua Tiga Mega is a company engaged in mining with a Mining Business License (IUP) of 3464 Ha, located in Luwe Hulu, West Lahei District, North Barito Regency, Central Kalimantan Province. Overburden or coal cover material that has been excavated needs to be moved to a location called a disposal area. Inpit dump is an area located within the mine site that is used to stockpile overburd…
Fluctuations in coal prices pose a challenge for companies in optimizing the economic value of mining operations. In response, PT Bukit Asam Tbk has proposed two new boundaries for the design of a new pit in Pit 2 Banko. This study aims to design a new pit based on the proposed boundaries, plan the forecast of excavation and hauling equipment to determine the annual production until the end of …
Unsur yang paling berpengaruh terhadap sifat-sifat baja adalah unsur karbon, meskipun unsur-unsur lain tidak bisa diabaikan begitu saja. Cara yang digunakan untuk menaikkan kandungan unsur karbon di kulit baja adalah dengan proses karburisasi. Penelitian ini dilakukan dengan cara, spesimen dan medium karbon yang telah ditambah dengan katalisator dimasukkan kedalam kotak baja kemudian dilakukan …
Naiknya harga BBM khususnya harga minyak tanah mencapai kisaran Rp 3000 per liter di tingkat pengecer membuat beberapa industri kecil dan menengah serta rumah tangga menjerit, menanggapi hal demikian maka penulis mencoba untuk membuat bahan bakar alternatif yang lebih murah dan terjangkau yaitu briket batubara. Telah kita ketahui dicanangkannya Sumatera Selatan sebagai Lumbung Energi Nasional k…
Perancangan ini bertujuan untuk mendapatkan kompor briket batubara yang lebih efisien dibandingkan dengan kompor yang telah ada dengan harga yang ekonomis. Salah satu untuk meningkatkan efisiensi kompor briket adalah dengan mengisolasi dinding kompor agar kalor yang dihasilkan kompor tidak banyak yang hilang melalui dinding kompor dan menggunakan pengarah api agar api lebih terfokus dan tidak m…
Penelitian tentang pembuatan karbon aktif dari batubara subbituminus sebagai adsorben telah dilakukan. Tujuan penelitian ini adalah untuk mengetahui bagaimana pengaruh (variasi) konsentrasi aktivator HC1 terhadap daya serap karbon aktif dari batubara subbituminus. Metode yang digunakan adalah metode eksperimen dengan perlakuan variasi konsentrasi aktivasi HCl 0% ,5% ,10%, 15% Pengambilan sampel…
Tujuan penelitian ini adalah untuk memodifikasi ruang alat pengering ikan tipe plat berongga dengan sumber energi briket batubara agar suhu yang dihasilkan konstan dan merata sampai pada bagian rak paling atas. Penelitian ini telah dilaksanakan di Bengkel Teknik Pertanian, Jurusan Teknologi Pertanian, Fakultas Pertanian, Universitas Sriwijaya, pada bulan Februari sampai Agustus 2005. Kapasitas …
Tujuan penelitian ini adalah untuk mengetahui dan mempelajari distribusi suhu pada ruang pengering tipe plat berongga serta menggunakan metode lain untuk mencapai hasil distribusi suhu yang seragam. Penelitian ini telah dilaksanakan di Bengkel Teknik Pertanian, Jurusan Teknologi Pertanian, Fakultas Pertanian, Universitas Sriwijaya, pada bulan Juli 2005 sampai Agustus 2005. Pengujian keseragaman…
Penelitian ini bertujuan untuk mengetahui kondisi beberapa sifat fisik dan kimia tanah pasca penambangan batubara yang telah ditimbun selama �} 10 tahun untuk budidaya tanaman jati Putih. Sifat fisik antara lain tekstur, struktur, warna, KA, BD, RPT dan Permeabilitas sedangkan sifat kimia antara lain pH, N, P, K, KTK. Hasil Penelitian menunjukkan bahwa lokasi Tanjung Air Laya dan Banko Barat …
The research was conducted in Gumay Talang District, Lahat Regency, South Sumatra. Regionally, this area is included in the South Sumatra Basin which is a back arc basin. This basin has coal-carrying formations, called the Muaraenim Formation and the Airbenakat Formation. Coal is formed through a sedimentation process that occurs in a specific location called a sedimentation environment. This s…
PT. Bukit Asam, Tbk is one of the mining companies engaged in coal. Location of PT. Bukit Asam, Tbk is located in Tanjung Enim and has a stockpile area, one of which is at Kertapati Pier, Palembang City. The coal contained in the stockpile is the coal transported from Tanjung Enim before being sent to buyers via barges. Placement of coal in the stockpile continues to occur causing the coal that…
The South Sumatra Basin is located in the back-arc basin and has coal-containing formations, including the Muara Enim Formation, Air Benakat Formation and Talang Akar Formation. One of them is PT. Bukit Asam Tbk, Muara Enim Regency, South Sumatra which has a coal mining site. The method used in this study is stratigraphic analysis to determine the lithology in the "BW" field which will later be…
PT Gorby Putra Utama is a company engaged in the coal mining industry. The current problem experienced by PT Gorby Putra Utama is that it is not possible to maximize coal mining in the sidewall area in the GE pit, because the GE pit sidewall area is directly adjacent to the IUP of PT Banyan Koalindo Lestari, so it is necessary to carry out reserve conservation activities in the area. The chosen…
Kegiatan usaha penambangan dilakukan tanpa izin maka dapat dikenakan pidana. Sebagaimana tertuang pada ketentuan pidana Pasal 158 Undang-Undang Nomor 3 Tahun 2020 tentang Perubahan Atas Undang-Undang Nomor 4 Tahun 2009 tentang Pertambangan Mineral dan Batubara, yang berbunyi: Setiap orang yang melakukan Penambangan tanpa izin sebagaimana dimaksud dalam Pasal 35 dipidana dengan pidana penjara pa…
PT Triaryani is a company engaged in mining, which is located in North Musirawas Regency, South Sumatra Province. The area of Mining Business License (IUP) owned by Pt. Triaryani is 2134 ha. PT Triaryani experienced a target non achievement in the first quarter of 2024. so it is necessary to re-plan in order to support the achievement of production in 2024. Planning the mining sequence in the p…
PT Duta Bara Utama is one of the companies engaged in coal mining and is one of several private companies that have the opportunity and license in Muara Enim Regency. The actual in the field shows non-achievement and discrepancies between the situation in the field and the planned mining plan. So it is necessary to analyze the causes of non achievement and discrepancies based on the planned pro…
Fossil-based fuels such as petroleum remain the primary energy source in Indonesia, particularly in the transportation sector. Continuous economic growth has led to increased consumption of these fuels. Coal is used as an alternative energy source. The purpose of this research is to develop a method for improving the quality of lignite coal through pyrolysis and hydrocracking processes, thereby…
Indonesia is a country rich in natural resources, one of which is coal. The South Sumatra Basin is located in the back arch basin and has several formations containing coal reserves, such as the Muaraenim Formation. This is the reason for the presence of many coal companies, one of which is PT. Gorby Energy in North Musirawas Regency, South Sumatra Province. In this study, a research method was…