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Jurnal Teknologi Mineral dan Batubara
Published by Balai Besar Pengujian Mineral dan Batubara tekMIRA
ISSN : 25278789     EISSN : 19796560     DOI : 10.30556/jtmb
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology
Jurnal Teknologi Mineral dan Batubara adalah Jurnal yang diterbitkan oleh Pusat Penelitian dan Pengembangan Teknologi Mineral dan Batubara (Puslitbang tekMIRA). Jurnal Teknologi Mineral dan Batubara terbit pada bulan Januari, Mei, September, memuat karya-karya ilmiah yang berkaitan dengan litbang mineral dan batubara mulai dari eksplorasi, eksploitasi, pengolahan, ekstraksi, pemanfaatan, lingkungan, kebijakan dan keekonomian termasuk ulasan ilmiah terkait.
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024" : 5 Documents clear
ANALISIS SUSTAINABLE DEVELOPMENT BERBASIS KOMODITAS TIMAH DI PROVINSI KEPULAUAN BANGKA BELITUNG MENGGUNAKAN PENDEKATAN DATA PANEL Sitra Wahyu Listiawati; Aryo Prawoto Wibowo; Fadhila Achmadi Rosyid
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No1.2024.1338

Abstract

Sustainable development is one of the important aspects of the development of a region. Development planning of a region has many obstacles, one of them is the dependence on a certain sector that becomes a source of regional income, such as the tin mining sector in Bangka Belitung Province. Sustainable development has several goals that are represented by three main aspects; economic, social, and environmental aspects of the six regencies in the Bangka Belitung Island Province. The economic aspect uses Gross Regional Domestic Product data from the tin mining sector, the social aspect uses Human Development Index data, and the environmental aspect uses the Environmental Quality Index data. These three aspects will be used as indicators to obtain the value of the Sustainable Development Index in the Bangka Belitung Islands Province. This study used the panel data method to examine the influence of the tin mining sector as one of the largest contributors to regional income, on sustainable development in the Bangka Belitung Islands Province. The panel data method was used to analyze the economic, social, and environmental aspects of the Sustainable Development Index so that the most influence sustainable development aspect in the Bangka Belitung Islands Province can be identified. The results of this study show that the mining sector  had the least contribution of 0.17 units to the Sustainable Development Index compared to the Human Development Index value of 5.9 units and 0.48 units of the Environmental Quality Index value which represented social and environmental aspects.
PEMANFAATAN BATU APUNG SEBAGAI ADSORBEN DALAM APLIKASI KOLOM ADSORPSI UNTUK PENYISIHAN LOGAM KROMIUM DARI AIR TANAH Shinta Indah; Denny Helard; Febbi Herdiani
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No1.2024.1510

Abstract

The utilization of pumice as an adsorbent has been tested in adsorption column applications in removing chromium (Cr) from groundwater. The pumice was taken from the banks of the Pasak River, Pariaman, West Sumatra. The column used is made of glass with 130 cm in height and 2,6 cm in diameter. The experiment was carried out by varying the bed height (65, 75, and 85 cm) and the influent flow rate (2, 3, and 4 gpm/ft2), while the influent concentration used was according to the groundwater sample conditions. The concentration of Cr was analyzed using inductively coupled plasma emission (ICPE). The performance of the adsorption column can be evaluated from the breakthrough curve, which is a plot between the Ct/C0 ratio and the sampling time. The experimental results showed that the optimum condition with the highest removal efficiency of 65.15% and an adsorption capacity of 0.0031 mg/g were obtained at a bed height of 85 cm and an influent flow rate of 2 gpm/ft2. Based on the experimental results, it was concluded that Cr removal efficiency increased as the influent flow rate decreased and as the bed height of adsorbent increased. The adsorption column with Sungai Pasak Pariaman pumice as an adsorbent has potential to be applied in removing Cr metal from groundwater.
PENINGKATAN PERSEN EKSTRAKSI PROSES PELINDIAN EMAS DAN PERAK MENGGUNAKAN VARIASI TEKNIK PENINGKATAN OKSIGEN TERLARUT SPARGER LANCE, PEROXIDE INJECTION DAN HIGH SHEAR REACTOR Dikri Fajar Ramadhan; Imelda Eva Roturena Hutabarat; Denny Lumban Raja; Sulaeman
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No1.2024.1512

Abstract

Cyanidation leaching has become the most intriguing technique for extracting gold and silver. In the gold and silver cyanidation process, PT Indo Muro Kencana (IMK) implements three (3) dissolved oxygen (DO) enhancement techniques. The concentration of DO typically becomes the limiting factor in the gold cyanidation process. The use of a pressurized system can also increase the DO concentration in water. Oxygen injection techniques with a sparger lance (standard/STD), peroxide injection (PRX), and high shear reactor (Aachen assisted leach/AAL) are employed to optimize the cyanidation process due to the increasingly complex characteristics of the processed ore since 2021. The use of a high shear reactor is the latest technique implemented since April 2022, following the previous implementation of peroxide injection and sparger lance by PT IMK. The objective of this study is to determine the extraction percentage and its stability in producing extraction percentages with different ore compositions. The oxygen used for each technique is the same, approximately 548 kg/hour flow rate, 90%-93% purity, and 4-6 KPa pressure. A series of leach tests are conducted to observe the extraction percentage of gold and silver. Based on the conducted tests, the reactor high shear technique yields the highest extraction percentages for gold and silver, namely 97.06% and 82.82% respectively. Leaching with the high shear reactor technique resulted in a higher percent extraction stability than the leaching process using the other two techniques.
OPTIMASI PERSEN BINDER, BEBAN KOMPAKSI, DAN SUHU SINTERING DALAM PEMBUATAN BATU BATA TINGGI ALUMINA MENGGUNAKAN APLIKASI RSM (RESPONSE SURFACE METHODOLOGY) Erika Arum Dianawati; Phichiato Sirait; Aditya Wibawa; Husaini; Putu Teta Prihartini Aryanti
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No1.2024.1522

Abstract

PT Indonesia Chemical Alumina (ICA) is a company that produces 300,000 tons of chemical grade alumina (CGA) per year. Of this amount, there is an average of 15,000 tons that do not meet market specifications every year. Alumina that does not meet this specification is only piled up by PT. ICA and takes up space, so it is economically detrimental to the company because they have to provide space to accommodate it. In fact, this alumina has a very high Al2O3 content and is in the form of an alpha phase or α-Al2O3 which is the most stable phase at the highest temperatures, so it can be processed into useful materials and has high added value such as high alumina bricks through compaction and sintering. Process conditions such as percent binder, load during compaction and sintering temperature greatly affect the quality of the high alumina bricks produced. The purpose of this study is to optimize the process conditions for making high-alumina bricks by identifying the relationship between input variables and the measured responses and developing a prediction model for experimental variations that will be used in optimizing the process conditions for the manufacture of high alumina bricks. The Design Expert 7.0® program with Box-Behnken Design Response Surface Methodology (RSM) is used to research and select process conditions from a combination of factor levels that produce an optimal response. Based on RSM Box-Behnken Design it is known that the main effects of binder percentage, compaction load and sintering temperature are factors that greatly influence the response value of high alumina bricks. The optimal response value for high alumina bricks is a compressive strength of 8.2229 MPa, with a process condition of 3% binder percent, a compacting load of 10 tons and a sintering temperature of 1600ºC.
PEMETAAN SEBARAN MINERAL HEMATIT (Fe2O3) PADA ENDAPAN BAUKSIT DI KECAMATAN SANDAI, KALIMANTAN BARAT Yoga Abdul Malik Putra; Muhardi; Radhitya Perdana
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Hematite (Fe2O3) is one of the minerals in bauxite deposits with a content of 20-45%. Estimation of hematite (Fe2O3) distribution over a large area with limited sample availability can be conducted using the interpolation method. This study aims to map and estimate the distribution of hematite (Fe2O3), ore thickness, and overburden thickness at Bukit Zahra, Sandai District, Ketapang Regency, West Kalimantan Province. The interpolation method in this study uses the inverse distance weighted (IDW) method, while the power test uses the calculation of the smallest root mean squared error (RMSE). The estimation results show the highest hematite (Fe2O3) content in the bauxite deposit of 20-25% is located at an elevation of 22-62 m, while the lowest hematite (Fe2O3) content of 0-6% is located at an elevation of 22-30 m. The mapping results show a maximum ore thickness of 7-9 m at an elevation of 46-62 m, while the minimum ore thickness of 0-1 m is at an elevation of 22-54 m. The maximum thickness of overburden is 6-8 m at an elevation of 38-46 m, while the minimum thickness of overburden is 0-1 m at an elevation of 22-62 m. The mapping results also show that the distribution of hematite (Fe2O3), ore, and overburden in the research site is on a gentle to steep slope.

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