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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 7 Documents
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Search results for , issue "Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023" : 7 Documents clear
PRODUKSI SERBUK KALSIUM KARBONAT DENGAN MESIN PENGGERUS HASIL MODIFIKASI PADA PT SUGIH ALAMANUGROHO Tri Wahyuningsih; Dyah Probowati; Olivia Silvi Hermanto; Monika Asworo; Meindra Setyawan
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1287

Abstract

Limestone is a sedimentary rock formed naturally from the died marine organisms. Limestone is used in various industrial fields, such as paint, plastics, carpets and soil pH regulator industries. PT. Sugih Alamanugroho is a limestone mining and calcium carbonate powder producer company. To produce calcium carbonate powder, limestone is dried, comminuted, and classified by size. The drying process reduces moisture content less than 4%. Then, the limestone is crushed by a jaw crusher and followed by secondary crushing by means of a hammer mill. The results of the secondary grind are crushed again using a modified grinding machine. Calcium carbonate powder will pass through an 800-mesh screen into the cyclone collector using a blower. In the cyclone collector, 800-mesh powder falls into the bottom of the cyclone, while 1200-mesh powder comes out of the cyclone and enters the cloth bags. The position of the feed on the side of the modified grinding machine is able to reduce collisions with the product. From the entire production steps, calcium carbonate powder products were produced, but did not meet the production amount target due to obstacles that occurred in the form of power outages, replacement of spare parts or equipment maintenance, machine breakdowns and late availability of spare parts.
OPTIMASI DOSIS PUPUK NPK DAN ASAM HUMAT DALAM MEMPERBAIKI KUALITAS TANAH BEKAS TAMBANG BATUBARA DAN PERTUMBUHAN SENGON SOLOMON Gindo Tampubolon; Muhammad Ikrar Lagowa; Jhoy Michael Simarmata; Boy Julius Sitanggang
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1365

Abstract

Solomon Sengon (Paraserianthes mollucana (Miq.) Barneby & J.W. Grimes) is a plant species in land reclamation activities for former coal mines. This is because Solomon sengon has advantages including: very fast growth, adaptive to extreme environments, and quite high economic and ecological values. Former coal mining soils are generally degraded and have low organic matter content, essential nutrient availability, CEC, and base saturation. These conditions do not support optimal plant growth. The aim of this study was to examine the effect of NPK plus humic acid fertilizer on several soil chemical properties and the growth of the Solomon sengon plant. This research was carried out in the coal mining concession area in Amplelu Mudo Village, Tembesi District, Batang Hari Regency, Jambi Province. The study used a randomized block design (RBD) with doses of NPK plus humic acid fertilizer in 9 levels and repeated 3 times, so there were 27 plots or experimental units. The observed variables were: pH, Al-dd, available-P, K-dd, height increase, diameter increase and root dry weight. The results showed that the application of NPK fertilizer 100 g plus humic acid 20 g/plant hole (P5) was the best treatment in improving soil K-dd with an increase in plant height of 110.83 cm, diameter of 28.65 mm and BKA of 10.63 g , there was an increase in the height of the Solomon sengon plant by 101.21%, diameter by 65.13% and BKA by 75.12% compared to the administration of 50 g NPK plus 10 g humic acid (P1). Increasing the dose of NPK and humic acid from 50 g of NPK plus 10 g of humic acid to 100 g of NPK and 20 g of humic acid has the potential to significantly increase the growth of the Solomon sengon plant.
FLOTASI KASITERIT DARI BIJIH TIMAH PRIMER TIPE SKARN ASAL PULAU BELITUNG Rustam Kamoda; Edy Sanwani
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1472

Abstract

Indonesia as one of the world's tin producers, not only has tin reserve from secondary deposit, but also has tin reserve from skarn-type primary deposit located on Belitung Island. The presence and characteristics of cassiterite in skarn-type of primary tin ore can be confirmed through sample characterization and have the potential to be separated from impurity minerals by flotation method. There are several factors that can affect the separation of valuable mineral from impurities through the flotation method, namely minerals association, the use of collector type scheme, pH condition of flotation and the use of depressant. The result of sample characterization showed that the primary tin ore of the skarn type from Belitung Island contained Sn in a low concentration of 0.1615% in the form of cassiterite. The flotation experiments carried out in two schemes. The first scheme was flotation on samples using SHA, SO and SHA + SO as collectors in the different pH values (pH 6, 7, 8, and 9) and flotation with the absence and presence of depressant at pH 8 for each type of collector. Recovery, grade, percent mass pull, enrichment ratio, separation efficiency, and selectivity index were the parameters used to assess flotation performance. Generally, the experimental results showed that cassiterite flotation in different pH values tend to show a better performance at pH 8. The flotation results of the three type of collectors showed that the recovery of Sn from SHA collector < SO < SHA+SO. In term of grade in the concentrate, the Sn grade of SO < SHA+SO < SHA collector. Flotation experiments from the three type of collectors in the absence and presence of depressant showed that flotation performance was better in the absence of depressant.
PEMASTIAN VALIDITAS PENGUJIAN KADAR SENG SECARA KOMPLEKSOMETRI TERHADAP MODIFIKASI TEKNIK PREPARASI DALAM KONSENTRAT SENG SULFIDA Fanny Rahman Ekawandi; Arie Hardian; Herawati; Inda Mapiliandari
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1479

Abstract

Sphalerite is one of the sulfide ore minerals that serves as the raw material for zinc sulfide concentrate (ZnS). Sphalerite in nature needs to be processed through a concentration process to become a high-value ZnS concentrate. The determination of zinc (Zn) content in the ZnS concentrate is carried out using complexometric methods, referring to the modified ISO 13658:2000 method in the preparation stage. In this research, the validity of the test results was conducted using several parameters, including precision testing (repeatability and reproducibility), accuracy (recovery and test result comparison with CRM value), and measurement of relative uncertainty in Zn content determination in ZnS concentrate using the modified ISO 13658:2000 method, it is conducted by two analysts. Certified reference material (CRM) O354 with a Zn content range of (49,30±2,46)% was used as a sample in this research. Zinc content in CRM O354 by Analyst X obtained 49.30% with RSD=0.37% and range of Recovery=(99.5-100.6)%, while Analyst Y obtained 49.03% with RSD=0.64% and range of Recovery=(98.1-99.9)%. Mean of results of the determination of Analyst X and Analyst Y is 49.13% with an uncertainty expanded by 1.90% so, Zn content is obtained at (49,13±1,90)% and the relative uncertainty is obtained at 3.87%. The minimum criteria for precision testing in terms of repeatability are RSD<2/3 CV Horwitz, and for reproducibility (F-test), Ftest<Ftable, for accuracy testing in terms of Recovery=(98-102)%, inter-analyst comparison, and test result comparison with CRM value (t-test), ttest<ttable as well as the minimum criteria for measurement of relative uncertainty<5%. Therefore, the test results of the modified ISO 13658:2000 method for Zn determination in ZnS concentrate have fulfilled all the validity parameters of the test results.
KARAKTERISTIK ABU LAYANG (FLY ASH) DARI PLTU TANJUNG SELOR DAN POTENSINYA SEBAGAI PREKURSOR MATERIAL ALUMINOSILIKAT Nur Hayati; Fildzah ‘Adany; Crhistine Dyta Nugraeni; Iif Ahmad Syarif; Riskaviana Kurniawati
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1499

Abstract

Around 500 million tonnes of coal combustion by-products are produced annually, with Fly Ash accounting for about 70% of the by-product. Therefore, using Fly Ash is crucial because if it is not processed and utilized correctly, it can harm the environment and human health. The use of Fly Ash is strongly influenced by its characteristics, which are different for each source because it depends on the type of coal, combustion, and cooling conditions. Therefore, characterization was carried out in this study using XRF and XRD on Fly Ash from Tanjung Selor PLTU. Based on ASTM C618, PLTU Fly Ash Tanjung Selor is class F Fly Ash because the amount of SiO2+Al2O3+Fe2O3 is 71,4% (>70%) and the amount of CaO is 13,83% (<15%). The XRD results also show that Fe2O3 and SiO2 dominate the Fly Ash with the appearance of the peak of Fe2O3 (hematite) at 2θ = 33,44; 35,57; 43,27° (PDF 01-073-0603) and SiO2 (quartz) at 2θ = 20,81; 26,63; 50,14; 57,26; 68,34° (PDF 01-085-0335). The characteristics of this Fly Ash indicate that it has the potential as a precursor for the synthesis of zeolite X and P because it has a SiO2/Al2O3 ratio of 1,63. In addition, due to the dominant Si and Al content, Fly Ash has the potential as a geopolymer precursor; the dominant Fe content (27%) can also increase the geopolymer's development strength.
VALIDITAS HASIL PENGUJIAN KADAR TIMBAL SECARA KOMPLEKSOMETRI TERHADAP MODIFIKASI TEKNIK PREPARASI DALAM PRODUK KONSENTRAT TIMBAL SULFIDA Yesaya Aprillianto; Arie Hardian; Herawati; Ardina Purnama Tirta
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1507

Abstract

Lead sulfide (PbS) concentrate is derived from the sulfide mineral galena. In nature, galena must first undergo a concentration process to become PbS concentrate. The determination of lead (Pb) content in the PbS concentrate is carried out using complexometric methods, referring to the modified ISO 13545:2000 standard during the preparation stage. In this research, the validity of the test results was assessed using several parameters, including precision test (repeatability and reproducibility), accuracy (%recovery) and estimation of measurement uncertainty. Certified reference material (CRM) Pb353, with a Pb content range of 58.20-64.33% was used as a sample in this study. The results showed an average Pb content of 61.11% for analyst A and 61.00% for analyst B in CRM Pb353. The research successfully met the precision testing requirements for repeatability (RSD 0.46% for analyst A and 0.39% for analyst B < 2/3 coefficient variance (CV) Horwitz 1.44%) and reproducibility (F-test 1.34 < F-table 4,28 and P-value 0.37 > significance level 0.05). Accuracy was also demonstrated with %recovery (analyst A 9.06–100.53% and analyst B 99.23–99.98%), as well as the estimation of measurement uncertainty (μrelative 2.27% < 5%). Therefore, the determination of Pb content using complexometric methods with modified preparation techniques in the PbS concentrate ensures the validity of the results.
STUDI PERBANDINGAN PROSES PELINDIAN UNTUK EKSTRAKSI SKANDIUM DARI TERAK RESIDU BAUKSIT Sariman; Siti Rochani; Nuryadi Saleh; Isyatun Rodliyah; Erika Arum Dianawati; Retno Wijayanti
Jurnal Teknologi Mineral dan Batubara Vol 19 No 3 (2023): Jurnal Teknologi Mineral dan Batubara Edisi September 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No3.2023.1509

Abstract

Scandium is classified as a rare earth element. Its existences are geochemically in small amounts as associate minerals. Consequently, scandium production is minimally from processing residues of major minerals. Indonesia has large bauxite deposits, and it is processed into alumina, producing bauxite residue as a by-product. The bauxite residue contains rare earth metals, including scandium. In this study, various ways of extracting scandium from bauxite residue slag were carried out. The bauxite residue beneficiation process was done through a smelting reduction process followed by magnetic separation. Scandium extractions were carried out from the bauxite residue slag through a leaching process with concentrated sulfuric, sulfation, alkali fusion, and a 2-stage acid leaching. The best percentage of scandium extracted was obtained at 88.40%, using the 2-stage acid leaching at the acid concentration of 500 g/kg, the temperature of 90oC, and the leaching time at 3 hours for each leaching stage. In addition, the best neodymium extracted achieved  76,97%, using the alkali fusion, fused in NaOH at 700oC for 3 hours.

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