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Haslen Oktarianty

Program Studi Teknik Pertambangan, Fakultas Teknik , Universitas Bangka Belitung

Author-ID : 5340729

Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology

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Evaluasi Kinerja Limestone Crushing Plant Terhadap Target Produksi 108.000 Ton/Bulan Pada PT Indocement Tunggal Prakarsa Tbk Unit Palimanan-Cirebon Novi Herlinda; Delita Ega Andini; Haslen Oktarianty
MINERAL Vol 6 No 2 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

This research was conducted to optimize limestone production within a maximum of 30 days. The method used in this research is the frequency distribution statistical method for increasing the time of resistance, The data required are unit resistance hours at the Crushing plant. Based on research and calculations in the field, it is known that the work efficiency of the limestone crushing plant 09 unit is low, 62.87% with a total production only 73.846 tons/month. After many refinement efforts, work efficiency of the limestone crushing plant 09 unit increased 17.31% to 80, 19%, to increase the production target, refinement efforts were made to increase effective working hours by minimizing time constraints, and working time management accordingly production targets were achieved, therefore target production increased from 2,275 tons / shift to 4,173 tons / shift and the final production of crushing plant 09 increased to 125,190 tons / month

Evaluasi Geometri Jalan Tambang Di PT Vitrama Properti Desa Air Mesu Kabupaten Bangka Tengah Selvira Oktaviani; Janiar Pitulima; Haslen Oktarianty
MINERAL Vol 6 No 2 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

PT Vitrama Properti is a company engaged in mining sector that utilizes natural resources of granite. The condition of mine road at PT Vitrama Properti is not good, causing the lack of transportation productivity in the transportation process. This study aims to evaluate the geometry of the mine road. The method is terrestrial method. Data that obtained are data on straight road width, road width at bends, height differences and bend radius to evaluated with AASHTO. The smallest of road width is 4.67 m, the road width on the smallest bend is 5.8 m, the smallest height difference value is 0.9 m and the smallest radius of bend is 7.695 m. The evaluation results are the width of the haul road on a straight single lane minimum is 6.6 m, the width of the haul road on a straight two-lane minimum is 11.55 m, the width of haul road in two lines minimum bend is 16.485 m, the maximum slope of road is 10%, the superelevation is 4%, and the cross slope is 33 cm.

Kajian Teknis Pengaruh Variabel Shaking Table Terhadap Peningkatan Kadar dan Recovery Pencucian Bijih Timah Unit di Unit Metalurgi PT Timah Tbk Novrida Siregar; Janiar Pitulima; Haslen Oktarianty
MINERAL Vol 7 No 1 (2022): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v7i1.3332

The Mineral Processing Sector (BPM) is a place for processing precious tin minerals with other associated minerals. This research was conducted because the tin content in table water as feed in processing is still quite economical, namely 9.64% Sn and the minimum level that must be achieved as smelting feed is >60% Sn. The data collection method was carried out by conducting feed analysis with the GCA test to determine the levels and distribution of minerals in the feed. Furthermore, the shake table tool variations are adjusted such as stroke lengths of 15 mm, 22 mm, 10 mm with a sample result of 9 samples and the speed of air flow over the table is carried out as many as 3 variations, namely 0.025 m/s, 0.011 m/s, 0.014 m/s with results of 9 samples. Then the combination of the two variables was carried out with the results of 27 samples. The results of the GCA analysis were carried out to see the effect on levels and recovery. The results of the combination of stroke length and water flow velocity were the most optimal in combination with a stroke length of 15 mm and a water flow velocity of 0.025 m/s resulting in a concentrate of 58.44% Sn, moderately 6.26% Sn, and tailings 2.72% Sn as well as recovery. by 58.49%.

Perencanaan Biaya Reklamasi Pada Lahan Bekas Penambangan Batubara Di Site MTBU PT Bukit Asam Tbk Kabupaten Muara Enim Nadilah Juang Putri; Franto Franto; Haslen Oktarianty
MINERAL Vol 7 No 1 (2022): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v7i1.3333

PT Bukit Asam Tbk is a coal mining company. The ex-mining area of the MTBU site which will be reclaimed in accordance with the 2020 plan is 44 ha, but the available land is only 24.84 ha, the rest is still considered productive for mining. Therefore, it is necessary to study the planning of reclamation costs on the MTBU site land. The method of this research activity begins with determining the area of the site to be reclaimed using Argics 10.6 software. then the reclamation costs were calculated which were grouped into direct costs and indirect costs based on KEPMEN ESDM 1827 of 2018. The results of the calculation of the direct cost components and indirect costs of the reclamation plan activities covering an area of 24.84 ha, namely the direct cost of reclamation of Rp. 14,857,849,955 with details of land management costs of Rp 2,363,798,980 and revegetation costs of Rp 485,597,426. Indirect costs are Rp 3,179,579,890,37 with details of equipment mobilization and demobilization costs (2.5%) of Rp 371.446248.88, reclamation planning costs (6%) of Rp 891.470.997.30, administrative costs and profits third parties as the implementation of the reclamation stage of production operations (8.5%) amounting to Rp. 1,262,917,246.18 and supervision fees (4.4%) of Rp. 653,745,398.02. The total cost required for land reclamation of 24.84 ha is Rp. 18,037,429,845.37.

Penilaian Tingkat Kestabilan Lereng De ngan Metode Slope Mass Rating (SMR) pada Bench S dan J PT Tanjung Bukit Nunggal Kabupaten Bangka Tengah Evrantino Insani Sitohang; Janiar Pitulima; Haslen Oktarianty
MINERAL Vol 7 No 1 (2022): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v7i1.3335

Excavation activities on mining activities cause tension changes on the ground that trigger the occurrence of deformation then followed by changes in slope stability. If slope stability is impaired then it will lead to the possibility of an avalanche, this will certainly result in the disruption of mining activities that endanger workers who are on the slope area with potential for avalanches. This study aims to find out parameters of basic RMR and deflection values of basic RMR at bench S and J, find out the values of slope stability using SMR at bench S and J, and cope with slope instability based on SMR values. The methods used in this study are quantitative and qualitative methods namely scanline sampling and rock physical test that is Uniaxial Compressive Strenght (UCS) tests, and Rock Quality Designation (RQD) measurements. The results of this study show that the rock conditions at the bench S and J are still good with RMR values of approximately 71 ± 73, the probability of avalanche occurrence is very low as SMR values range 71 ± 73, but still it needs to be carried out cutting on blocks indicated to ruins.

Co-Authors Alex Lisendrik Nadapdap Aryuni Yusra Hamid Benget Harmoko Manik Delita Ega Andini Evrantino Insani Sitohang Franto Franto Ghina Qatrunnada Guskarnali, Guskarnali Hermita Ramadhini Indra Hot Daniel Hutasoit Irvani, Irvani Janiar Pitulima Leyriesa Awdina Masyeba Evans Lubis Muhammad Rizki Aulia Nadilah Juang Putri Novi Herlinda Novrida Siregar Riztia Ramadhanti Selvira Oktaviani

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