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All Journal Jurnal Teknologi Mineral dan Batubara OPHIOLITE : Jurnal Geologi Terapan Jurnal Teknologi Mineral dan Batubara
Hakim, Muhammad El
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Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology

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EVALUASI KINERJA JIG TIPE PAN AMERICAN TERHADAP RECOVERY TIMAH HASIL PENCUCIAN BIJIH TIMAH PADA KAPAL ISAP PRODUKSI (KIP) TIMAH 17 DI LAUT TEMPILANG KABUPATEN BANGKA BARAT, PROVINSI BANGKA BELITUNG Abror, Muhammad; Lagowa, Muhammad Ikrar; Hakim, Muhammad El
Jurnal Teknologi Mineral dan Batubara Vol 20 No 3 (2024): Jurnal Teknologi Mineral dan Batubara Edisi September 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No3.2024.1589

Abstract

The early stage of mineral processing usually focuses mainly on recovery, not the grade of the concentrate. Tin dressing in Production Section Vessel on January 2023 did not meet target recovery of 96%. This study aimed to evaluate and optimize jig performance to achieve the desired target. The study focused on evaluating the configuration of variables such as feed velocity, bed thickness, as well as number and length of strokes. Measurement data of jig performance variables and tailings and concentrate samples were used as comparative data to the SOP. The calculation of the sample content was carried out through the grain counting analysis (GCA) method, which calculated the amount of concentrate and losses in each jig. The final results of washing recovery prior to washing evaluation were 92.70% Sn in observation I and 88.68% Sn in observation II, respectively. The washing process in observation I and II conditions were not considered optimal because the recovery had not reached the target. This is caused by variables that are not under the provisions To optimize the performance of the jig was the installation a comb in the flow section of the jig to standardize the flow that was too fast, remeasurement after the addition of the hematite stone, repairing pillow blocks and eccentric coupling bolts on the stroke length setting and resetting the variables in the jig performance following existing SOPs. After the evaluation and readjustment of the jig variables, the recovery was increased to 97.53% Sn. From this study it can be concluded that the failure to achieve the targeted recovery was caused by operational variables that did not meet the SOP including the length and number of strokes, bed thickness, and water flow rate due to technical constraints. After being repaired, the dressing recovery could meet or even exceed the recovery target.
EVALUASI KINERJA JIG TIPE PAN AMERICAN TERHADAP RECOVERY TIMAH HASIL PENCUCIAN BIJIH TIMAH PADA KAPAL ISAP PRODUKSI (KIP) TIMAH 17 DI LAUT TEMPILANG KABUPATEN BANGKA BARAT, PROVINSI BANGKA BELITUNG Abror, Muhammad; Lagowa, Muhammad Ikrar; Hakim, Muhammad El
Jurnal Teknologi Mineral dan Batubara Vol 20 No 3 (2024): Jurnal Teknologi Mineral dan Batubara Edisi September 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No3.2024.1589

Abstract

The early stage of mineral processing usually focuses mainly on recovery, not the grade of the concentrate. Tin dressing in Production Section Vessel on January 2023 did not meet target recovery of 96%. This study aimed to evaluate and optimize jig performance to achieve the desired target. The study focused on evaluating the configuration of variables such as feed velocity, bed thickness, as well as number and length of strokes. Measurement data of jig performance variables and tailings and concentrate samples were used as comparative data to the SOP. The calculation of the sample content was carried out through the grain counting analysis (GCA) method, which calculated the amount of concentrate and losses in each jig. The final results of washing recovery prior to washing evaluation were 92.70% Sn in observation I and 88.68% Sn in observation II, respectively. The washing process in observation I and II conditions were not considered optimal because the recovery had not reached the target. This is caused by variables that are not under the provisions To optimize the performance of the jig was the installation a comb in the flow section of the jig to standardize the flow that was too fast, remeasurement after the addition of the hematite stone, repairing pillow blocks and eccentric coupling bolts on the stroke length setting and resetting the variables in the jig performance following existing SOPs. After the evaluation and readjustment of the jig variables, the recovery was increased to 97.53% Sn. From this study it can be concluded that the failure to achieve the targeted recovery was caused by operational variables that did not meet the SOP including the length and number of strokes, bed thickness, and water flow rate due to technical constraints. After being repaired, the dressing recovery could meet or even exceed the recovery target.
Pemodelan Endapan dan Estimasi Sumberdaya Batubara dengan Block Model di PT Batubara Jambi Lestari Kecamatan Mestong Kabupaten Muaro Jambi Aliffano, Yulian; Yulanda, Yudi Arista; Hakim, Muhammad El
OPHIOLITE: Jurnal Geologi Terapan Vol 7 No 2 (2025): AGUSTUS 2025
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56099/ophi.v7i2.p67-74

Abstract

Jambi Province holds significant potential in energy and mineral resources, particularly coal, part of which has been exploited while others are still under exploration. PT Batubara Jambi Lestari plans to develop an open-pit mine in the northern block of its IUP-OP area, necessitating deposit modelling and coal resource estimation as the basis for mine planning. Thus far, coal modelling has generally relied on stratigraphic models for geological interpretation, whereas the application of block models to coal deposits remains limited. This study seeks to address this gap by examining the use of block models in coal deposit modelling. Resource estimation was conducted using the Nearest Neighbour Point (NNP) method, selected due to its suitability for relatively homogeneous coal deposits, computational efficiency, and minimal bias against local variability. The research focused on the northern block of the Muara Enim Formation, the main coal-bearing formation, with modelling carried out through correlation between drill holes. The resulting model illustrates a deposit shaped like a horse back, characterized by coal seams and sediments arching upward due to compressional forces, with an average dip of 12°. The application of the block model required manual adjustments through a trial-and-error approach to ensure consistency with the geological database, but it successfully represented the geological conditions. The estimation results indicate a measured coal resource of 2,013,750 tons, which provides an important reference for mine planning at PT Batubara Jambi Lestari.
Co-Authors Aliffano, Yulian Muhammad Abror Muhammad Ikrar Lagowa Yudi Arista Yulanda