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All Journal Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung PROMINE Jurnal GEOSAPTA IKRA-ITH ABDIMAS MINERAL JAGE
Delita Ega Andini
Program Studi Teknik Pertambangan, Fakultas Teknik , Universitas Bangka Belitung
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences Other

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Kajian Kelayakan Jalan Angkut Menggunakan Metode AASHTO, Unsurfaced Road Condition Indeks dan California Bearing Ratio di PT Mandala Karya Prima, Kalimantan Utara: Feasibility Study of Transport Roads Using AASHTO Method, Unsurfaced Road Condition Index, and California Bearing Ratio at PT Mandala Karya Prima, North Kalimantan Silaban, Cindy Grestina; Andini, Delita Ega; Harsiga, Edwin
MINERAL Vol 10 No 1 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/93fsva56

Abstract

PT Mandala Karya Prima is facing challenges due to damage to the roadway that has caused a decline in travel hauler performance, resulting in unmet overburden production targets. The purpose of this research is to evaluate and recommend road geometry based on AASHTO methods, transport road quality based on URCI values, and transport road bearing capacity based on CBR testing using the DCP tool. The width of the straight road ranges from 26 to 47 meters, and 22 meters on curved roads. The road grade varies from 1.666% to 10.041%, and the cross slope is not formed. The superelevation is 0.0156 m/m with a curvature radius of 30.387 meters. The quality value of the transport road on Jl. Jati STA 200 – 1700 is 51-73 with a Good rating on the dry loading lane and on the post-rain loading lane with a value of 39-67 and a Fair rating. Meanwhile, the URCI value on the empty lane with dry conditions is 59-77 with a Good rating, and on the empty lane under post-rain conditions, it has a Good rating with values ranging from 32-69. The varying CBR values range from 18.1% to 31%, with an average of 25.6%, which is still below the required standard of 36.23%. Recommendations that can be made for improving access roads include road widening, spoil relocation, reformation of drainage, road material backfilling, use of graders and compactors, and patching at several points.
Interpretasi Material Pada Rancang Bak Ukur Skala Laboratorium Dengan Pendekatan Konfigurasi Wenner, Wenner – Schlumberger dan Dipole-dipole: Material Interpretation in Laboratory Scale Measurement Design Using Wenner, Wenner–Schlumberger and Dipole-dipole Configuration Approaches Guskarnali, Guskarnali; Oktarianty, Haslen; Irvani, Irvani; Tono, E.P.S.B. Taman; Andini, Delita Ega
MINERAL Vol 8 No 2 (2023): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v8i2.4958

Abstract

Geoelectric measurements have been carried out using multichannel ResistivityMeter (Geores) tools with Wenner, Wenner-Schlumberger, and Dipole-dipole Configuration approaches on the influence of materials arranged in a laboratory-scale measuring tub design with dimensions of 194x184x80 cm. The measured method is the variation in resistivity value against each trajectory of the material. The method used is the variation of resistivity values for each path of the material that has been arranged in a laboratory scale measuring design. Geoelectric measurements were carried out on 7 lines (5 line in the West-East direction and 2 line in the North-South direction). The spacing between the electrodes of each line is 10 cm with 16 electrodes in one line so that each line has a length of 160 cm or 1.6 m which corresponds to the length and width dimensions of a laboratory scale measuring design. The electrode arrangement parameters are constant with respect to changes in the configuration selected from the geores parameters during geoelectric measurements. The measurement results showed that the identified depth reached 31.2 cm. The low resistivity value category has an interval of 374-4,397 ohm.meters at a depth of 0-12.5 cm, which is the influence of building sand material containing water and soil, while the depth interval is 12.5 - 31.2 cm ohm.meters (material category that is influenced by 2 iron rods, tin tailings sand, granite, gravel) with resistivity values ranging from 12,378–67,498 ohm.meters. From experiments on the influence of the resistivity values of the three Wenner, Wenner-Schlumberger, and Dipole-dipole configurations, it was obtained that the smallest absolute error resistivity value in the Wenner configuration was 5.01% against the overall average absolute error resistivity value of 10.16%.
Kajian Teknis Kinerja Jig Primer terhadap Kadar Recovery dan Looses Bijih Timah pada SHP KIP Mitra Matras di Bidang Pengolahan Mineral Unit Pengolahan PT Timah Tbk: Analysis Technical Study of Primary Jig Performance on Recovery Rates and Tin Ore Losses at SHP KIP Mitra Matras in the Mineral Processing Sector at Processing Unit of PT Timah Tbk Aditya, Ismu; Pitulima, Janiar; Andini, Delita Ega
MINERAL Vol 9 No 2 (2024): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v9i2.5073

Abstract

Bidang Pengolahan Mineral Processing Unit of PT Timah Tbk operates in the field of tin ore processing. The problem at the research location is that there is no standard operating standard for the Primary Jig tool for washing Processing Waste (SHP). The aim of this research is to determine the settings for the Primary Jig variables in order to obtain optimal levels, Sn recovery and looses. The research method used is Grafity Concentration. The feed used is SHP from KIP Mitra Matras. The experiment was carried out 21 times. Each experiment used 7 variations of Primary Jig stroke speed (300 rpm, 350 rpm, 400 rpm, 450 rpm, 500 rpm, 550 rpm, 600 rpm) and Bed thickness (70 mm, 80 mm, 90 mm). Grain Counting Analysis shows a feed Sn content value of 9.96%. GCA analysis shows that the minerals in the bait are cassiterite, ilmenite, monazite, zircone, pyrite, siderite, limonite, tourmaline, quartz and iron rust. Low stroke speed results in high concentrate Sn content with low Sn recovery and little looses wasted and vice versa. A high Bed thickness results in low Sn concentrate content, high Sn recovery, and a lot of looses is wasted, and vice versa. Setting the optimal Primary Jig operating variables with variations in punch speed of 450 rpm and Bed thickness of 80 mm obtained a Sn content of 41.36% and a Sn recovery of 60.11%. Based on the results of calculating the degree of liberation, the highest average value of the degree of liberation was obtained at mesh -100, indicating that the SHP KIP Mitra Matras concentrate is classified as having a fine grain size.
Analisis Konsumsi Bahan Bakar Alat Muat dan Angkut Pada Pengupasan Overburden di PT Putra Maga Nanditama Bengkulu Utara: Analysis of Fuel Consumption of Loading and Transport Equipment in Overburden Stripping at PT Putra Maga Nanditama North Bengkulu Alamsyah, Muhammad Izhar; Franto, Franto; Andini, Delita Ega
MINERAL Vol 9 No 2 (2024): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v9i2.5135

Abstract

The research was conducted at PT Putra Maga Nanditama site Gunung Selan, PT Putra Maga Nanditama is a company engaged in coal mining. The background to the research is that overburden production did not reach the company's target and fuel consumption for overburden loading and transport equipment exceeded the company's fuel target. The research method used is a quantitative method. Data collection consists of primary and secondary data. Primary data includes tool cycle time and work efficiency, actual fuel consumption as well as road geometry and distance to disposal. Secondary data in the form of regional performance maps, equipment specifications, rainfall data, equipment working hours data, drone maps for August 2023 and contours. Based on the results of research in the field, factors that influence fuel consumption such as road geometry, road conditions and distance to overburden disposal are still not in accordance with established standards. The productivity of the DX800LC Excavator is 279.59 BCM/hour, the Doosan DA45 ADT is 60.47 BCM/hour and the Volvo A40G ADT is 59.37 BCM/hour. For Doosan DX800LC Excavator fuel consumption is 48.21 liters/hour, ADT Doosan DA45 is 26.62 and ADT Volvo A40G is 23.72 liters/hour. The actual fuel comparison for the two haulers is that the ADT Volvo A40G is more efficient than the ADT Doosan DA45 both in terms of fuel consumption and fuel costs.
Co-Authors Aditya, Ismu Alamsyah, Muhammad Izhar Alfitri Rosita Alldino Hernanto Aryuni Yusra Hamid Bobby Bagaskara Dihan Fauzan Edwin Harsiga EPSB Taman Tono Fajar Indah Puspita Sari Ferdinand De Lessep Samosir Franto, Franto Franto, Franto Guskarnali, Guskarnali Haslen Oktarianty Irvani Irvani Irvani, Irvani Irvani, Irvani Janiar Pitulima Jeffry Reynold Silalahi Kristina Damayanti Panjaitan M.Arief Adilah Novi Herlinda Nur Annisa Oktarianty, Haslen Rafi Sasena Rahmad Tanjung Rajesta F. Wardana Ramadhan, Setiawan Regita Kasih Parenty Reza Reza Rika Fitriani Riztia Ramadhanti Silaban, Cindy Grestina Suryani Suryani