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All Journal Jurnal Teknologi Mineral dan Batubara Blend Sains Jurnal Teknik OPHIOLITE : Jurnal Geologi Terapan Jurnal Teknologi Mineral dan Batubara Jurnal Keilmuan dan Aplikasi Teknologi Industri Jurnal Keilmuan dan Aplikasi Teknologi Industri
Muhammad El Hakim
Program Studi Teknik Pertambangan, Universitas Jambi, Indonesia
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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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.
ANALISIS PENCAMPURAN BATUBARA PADA PT. BUKIT ASAM TBK DALAM UPAYA MENINGKATKAN KUALITAS BATUBARA UNTUK MEMENUHI KRITERIA PERMINTAAN PLTU BUKIT ASAM TANJUNG ENIM, SUMATERA SELATAN Fitriani. A; Zahar, Wahyudi; El Hakim, Muhammad
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.No3.2024.1563

Abstract

PT. Bukit Asam Tbk provides BA 50 type coal to be sent to the Bukit Asam Tanjung Enim PLTU. The aim of this research is to obtain coal that suits the needs of the Bukit Asam Tanjung Enim PLTU. The method used is to simulate the blending of several types of coal at PT. Bukit Asam Tbk such as mine brand AL 49, mine brand AL 51, mine brand AL 53 and mine brand AL 55. The blending method uses the stack arrangement method with the layer arrangement method using the layered method. The research results show that the blending  simulation consists of 11 types of blending, four of which cannot be used as recommendations because they have a higher calorific value than BA 50. Of the seven recommended simulations, the AL 49 AL 51 simulation has the highest profit price value compared to the agreed selling price, namely $0.38 per ton and $1,157.55 per day or equal to IDR 18,216,357.16 per day. In this research, it is not only recommended to blend coal with two types of coal of different qualities, but innovation is carried out by blending which can be done with more than two types of coal of different qualities.
ANALISIS PENCAMPURAN BATUBARA PADA PT. BUKIT ASAM TBK DALAM UPAYA MENINGKATKAN KUALITAS BATUBARA UNTUK MEMENUHI KRITERIA PERMINTAAN PLTU BUKIT ASAM TANJUNG ENIM, SUMATERA SELATAN Fitriani. A; Zahar, Wahyudi; El Hakim, Muhammad
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.No3.2024.1563

Abstract

PT. Bukit Asam Tbk provides BA 50 type coal to be sent to the Bukit Asam Tanjung Enim PLTU. The aim of this research is to obtain coal that suits the needs of the Bukit Asam Tanjung Enim PLTU. The method used is to simulate the blending of several types of coal at PT. Bukit Asam Tbk such as mine brand AL 49, mine brand AL 51, mine brand AL 53 and mine brand AL 55. The blending method uses the stack arrangement method with the layer arrangement method using the layered method. The research results show that the blending  simulation consists of 11 types of blending, four of which cannot be used as recommendations because they have a higher calorific value than BA 50. Of the seven recommended simulations, the AL 49 AL 51 simulation has the highest profit price value compared to the agreed selling price, namely $0.38 per ton and $1,157.55 per day or equal to IDR 18,216,357.16 per day. In this research, it is not only recommended to blend coal with two types of coal of different qualities, but innovation is carried out by blending which can be done with more than two types of coal of different qualities.
Pemodelan Endapan dan Estimasi Sumberdaya Batubara dengan Block Model di PT Batubara Jambi Lestari Kecamatan Mestong Kabupaten Muaro Jambi Yulian Aliffano; Yudi Arista Yulanda; Muhammad El Hakim
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.
Karakterisasi Pasir Silika Sebagai Bahan Baku dalam Pembutan Panel Surya Berdasarkan Analisis Geokimia di Desa Teluk Rendah, Jambi Muhammad El Hakim; Wahyudi Zahar; Yudi Arista Yulanda; Jarot Wiratama
Blend Sains Jurnal Teknik Vol. 4 No. 4 (2026): Edisi April
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/blendsains.v4i4.1638

Abstract

Indonesia sebagai negara tropis menjadikannya sebagai negara yang mendapatkan penyinaran matahari yang lama dan konsisten setiap harinya. Oleh sebab itu potensi pemanfaatan panel surya di Indonesia juga cukup besar, di samping bahan bakunya juga tersedia di Indonesia. Pasir silika memiliki sumberdaya yang berlimpah, stabil digunakan sebagai penyimpan panas, dan memerlukan biaya yang rendah sebagai penyimpan panas dengan temperatur hingga 1.2000C. Penelitian ini menggunakan metoda kuantitatif, yaitu dengan cara melakukan pengujian dan pengukuran secara geokimia pada sampel pasir silika yang ada di Desa Teluk Rendah, Jambi. Sampel diuji menggunakan motede Atomic Absorption Spectrometry (AAS) dan Scanning Electron Microscope-Energy Dispersive Spectroscopy (SEM-EDS) untuk mengetahui dan melakukan analisis terhadap karakterisasi sampel pasir silika yang telah diambil. Kualitas pasir silika sebagai bahan baku panel surya sebaiknya mengandung kadar unsur Silicon Dioxide lebih dari 99,7%, Iron Oxide kurang dari 85 ppm, Titanium Dioxide kurang dari 140 ppm, Aluminium Oxide kurang dari 500 ppm. Dari hasil pengujian AAS didapatkan karakteristik pasir silika di daerah penelitian tidak memenuhi syarat dengan kadar Silicon Dioxide sebesar 95,78%, Iron Oxide 17.200 ppm, Titanium Dioxide 13.700ppm, dan Aluminium Oxide 8.900ppm. Namun jika dilihat dari kandungan silika yang cukup tinggi pada sampel, maka kemungkinan pemanfaatan pasir silika pada daerah penelitian perlu dikaji lebih lanjut. Dari hasil uji SEM-EDS didapatkan unsur yang paling banyak terdeteksi berupa Carbon dengan massa konsentrasi 40,86%, Oksigen dengan massa konsentrasi 30% dan Silikon 25,22%. Kehadiran Silikon (Si) dan Oksigen (O) dalam jumlah yang banyak mengindikasikan mineral yang paling banyak pada daerah ini adalah mineral Silikat (SiO2) dengan total massa konsentrasi 53,97%.
Potensi Logam Tanah Jarang pada Fly Ash dan Bottom Ash Endapan Batubara Peringkat Rendah Formasi Muara Enim Wahyudi Zahar; Yudi Arista Yulanda; Jarot Wiratama; Muhammad El Hakim
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol. 25 No. 2 (2025): Regular Issue
Publisher : SEKOLAH TINGGI TEKNOLOGI INDUSTRI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/wffpht91

Abstract

Logam tanah jarang (LTJ) merupakan komoditas strategis saat ini seiring dengan perkembangan teknologi. Penggunaan LTJ banyak diaplikasikan pada industri pertahanan, kesehatan, mobil listrik, turbin, handphone, laptop, dan teknologi maju lainnya. Keterdapatan LTJ pada umumnya berasosiasi sebagai mineral-mineral aksesoris pada batuan berkomposisi granitoids seperti pada monasit, xenotim, allanit, titanit, dan zircon. Akan tetapi berdasarkan beberapa penelitian ditemukan adanya pengkayaan LTJ pada abu sisa pembakaran PLTU FABA (fly ash dan bottom ash). Pada penelitian ini bertujuan untuk menganalisis keterdapan LTJ pada kondisi batubara Peringkat Rendah di Formasi Muara Enim pada endapan insitu dan pengkayaan pada FABA. Sampel batubara diambil secara grab sampling pada lokasi tambang sedangkan sampel FABA diambil secara grab sampling di PLTU Mulut Tambang. Pengujian Laboratorium dilakukan melalui Uji XRF untuk melihat kandungan oksida mineral dan Laboratorium BRIN untuk dilakukan analisis ICP OES. Hasil analisis XRF menunjukkan elemen oksida utama penyusun batubara pada endapan batubara insitu terdiri atas Fe2O3, MgO, dan SO3. Hasil analisis ICP-OES memperlihatkan terjadi pengkayaan konsentrasi LTJ pada FABA. Pengkayaan paling besar terjadi pada unsur Cerium (Ce) dimana pada Fly Ash terjadi peningkatan 19 kali menjadi 40,12 Ppm dan pada Bottom Ash 17 kali menjadi 37,15 Ppm. Selanjutnya pada Lantanum (La) terjadi pengkayaan 27 kali pada fly ash menjadi 19,02 Ppm dan 24 kali pada bottom ash menjadi 16,86 Ppm. Secara umum pengkayaan terjadi lebih besar pada fly ash dibandingkan dengan bottom ash.
Potensi Logam Tanah Jarang pada Fly Ash dan Bottom Ash Endapan Batubara Peringkat Rendah Formasi Muara Enim Wahyudi Zahar; Yudi Arista Yulanda; Jarot Wiratama; Muhammad El Hakim
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol. 25 No. 2 (2025): Regular Issue
Publisher : SEKOLAH TINGGI TEKNOLOGI INDUSTRI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/wffpht91

Abstract

Logam tanah jarang (LTJ) merupakan komoditas strategis saat ini seiring dengan perkembangan teknologi. Penggunaan LTJ banyak diaplikasikan pada industri pertahanan, kesehatan, mobil listrik, turbin, handphone, laptop, dan teknologi maju lainnya. Keterdapatan LTJ pada umumnya berasosiasi sebagai mineral-mineral aksesoris pada batuan berkomposisi granitoids seperti pada monasit, xenotim, allanit, titanit, dan zircon. Akan tetapi berdasarkan beberapa penelitian ditemukan adanya pengkayaan LTJ pada abu sisa pembakaran PLTU FABA (fly ash dan bottom ash). Pada penelitian ini bertujuan untuk menganalisis keterdapan LTJ pada kondisi batubara Peringkat Rendah di Formasi Muara Enim pada endapan insitu dan pengkayaan pada FABA. Sampel batubara diambil secara grab sampling pada lokasi tambang sedangkan sampel FABA diambil secara grab sampling di PLTU Mulut Tambang. Pengujian Laboratorium dilakukan melalui Uji XRF untuk melihat kandungan oksida mineral dan Laboratorium BRIN untuk dilakukan analisis ICP OES. Hasil analisis XRF menunjukkan elemen oksida utama penyusun batubara pada endapan batubara insitu terdiri atas Fe2O3, MgO, dan SO3. Hasil analisis ICP-OES memperlihatkan terjadi pengkayaan konsentrasi LTJ pada FABA. Pengkayaan paling besar terjadi pada unsur Cerium (Ce) dimana pada Fly Ash terjadi peningkatan 19 kali menjadi 40,12 Ppm dan pada Bottom Ash 17 kali menjadi 37,15 Ppm. Selanjutnya pada Lantanum (La) terjadi pengkayaan 27 kali pada fly ash menjadi 19,02 Ppm dan 24 kali pada bottom ash menjadi 16,86 Ppm. Secara umum pengkayaan terjadi lebih besar pada fly ash dibandingkan dengan bottom ash.
Co-Authors Ericson . Fitriani. A Muhammad Abror Muhammad Ikrar Lagowa R. Arafat Wahyudi Zahar Wiratama, Jarot Yudi Arista Yulanda Yulian Aliffano Zahar, Wahyudi