Jurnal Teknologi Mineral dan Batubara最新文献

{"title":"Analisis pasar expanded perlite Indonesia","authors":"I. Suherman, Triswan Suseno, Agus Wahyudi","doi":"10.30556/jtmb.vol18.no2.2022.1139","DOIUrl":"https://doi.org/10.30556/jtmb.vol18.no2.2022.1139","url":null,"abstract":"The availability of perlite is always associated with volcanic activities, so perlite has a huge potential in Indonesia. The use of perlite abroad has developed for various applications, but is still limited in Indonesia. One of the perlite development efforts in Indonesia is an analysis to seek market of the expanded perlite. The purpose of this market analysis is to find out the characteristics and opportunities of the expanded perlite market both domestically and export. Methods of data collection were carried out through direct survey and non-survey, while the processing model and technical analysis used descriptive statistical approaches, trend analysis, and economic analysis models. Expanded perlite is most widely used as a construction raw material, filler, and filter. Domestic market opportunities include insulation or heat in cryogenic tanks, cement in drilling, lightweight brick, mortar, refractory aggregate, plaster, and planting media. The results of this study are expected to be use as an input for the government and stakeholders in formulating their policies so that the potential of perlite can be developed on a prospective basis.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134129088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peramalan puncak produksi dan umur cadangan batubara di Indonesia","authors":"Arif Setiawan, Mayang Kinanti Firstiasya Puteri, Yulianus Rombe Pasalli","doi":"10.30556/jtmb.vol19.no2.2023.1302","DOIUrl":"https://doi.org/10.30556/jtmb.vol19.no2.2023.1302","url":null,"abstract":"Indonesia is a country that has quite large resources and reserves (3.25%) of the world's coal reserves. Indonesia's coal production in 2022 will reach 687 million tonnes to meet domestic and foreign (export) demand. Indonesia's coal production from year to year has an increasing trend. The existence of this upward trend can result in a decrease in the number of existing coal reserves. This study aims to predict the peak of coal production by estimating the age of the existing reserves. The data used is annual data from 1996 to 2021. The coal reserves used as a basis for consideration are 36,278.85 million tons. The methods used to forecast coal peak production and reserve age are the Hubbert, logistics, and Gomperzt models. The results obtained explain that the peak of coal production occurred in 2018 amounting to 0.539 billion tons with a coal reserve until 2081. For the logistic and Gomperzt models, the peak of coal production occurred in 2033 amounting to 1.345 billion tons and 0.7604 billion tons. Meanwhile, the reserve ages of the two models until 2080 and 2120.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126055497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis nilai keekonomian peruntukan lahan bekas tambang batubara sebagai asimilator karbon","authors":"Ridho Yovanda, R. Juniah, A. Yulianita, Y. Anaperta, H. Rahmi","doi":"10.30556/jtmb.vol19.no1.2023.1311","DOIUrl":"https://doi.org/10.30556/jtmb.vol19.no1.2023.1311","url":null,"abstract":"The environmental issues that usually arise from mining activities are ex-coal mining lands in the form of mine pits (void) and land (non void) which are not managed properly. The company has an obligation to manage ex-coal mining land so that the environment remains sustainable and benefits the community by carrying out reclamation activities. Reclamation of ex-coal mining land by planting oil palm provides benefits in the form of incomes and as a carbon assimilator. This study aims to analyze the economics value of the ex-coal mining land use as a carbon assimilator by using the extended NPV analysis method. The result of analysis revealed a positive extended NPV value of IDR. 1,961,057,020,-, which means that ex-coal mining land can provide positive benefits as a carbon assimilator.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124092394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potensi deposit wolfram di Indonesia","authors":"Imelda Eva Roturena Hutabarat, Sabtanto Joko Suprapto, Priatna, Maryono, Rudiyansah","doi":"10.30556/jtmb.vol19.no2.2023.1478","DOIUrl":"https://doi.org/10.30556/jtmb.vol19.no2.2023.1478","url":null,"abstract":"Bangka island is one of the islands in the Southeast Asian Tin Belt that makes Indonesia the largest tin (Sn) producer in the world. The carrier of wolframite is a by product mineral of the mineral tin (cassiterite). This study aims to study the presence and type of wolfram-as by product in the tin deposits on Bangka island. The research area was conducted on the eastern edge of Klabat Granite in Kepoh Village, Toboali District, South Bangka, at coordinates of 106o 31' 58\" BT, 2o 56' 56 \" LS. The result shows the presence of wolfram with grade of wolfram in veins reaching 8287 ppm. Wolfram was identified as an associated mineral in the tin mineralization system in Toboali along with rare earth metals (LTJ), molybdenum (Mo) and platinum (Pt). The results of analytical studies (UV, XRF, ICP OES, mineragraphy) on Toboali area minerals show the presence of wolfram in ores, concentrates, slag, and floor crusts. The identified wolfram minerals are wolframite (Fe.Mn)WO4 and scheelite (CaWO4) which are characterized through differences in properties such as color, fluorosence, magnetic, specific gravity and hardness values. The results obtained showed the presence of wolfram in Toboali area with wolfram content of 742 ppm in ore and also in the tin process, specifically in slag II of 1.02%. In addition, wolfram is indicated on the furnace floor and on the anode slime. Indonesia as one of the countries that owns wolfram minerals needs to continue the wolfram extraction process so that Indonesia receive the added value from its minerals.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123030870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioremediasi air asam tambang batubara dengan pengayaan bakteri pereduksi sulfat dan penambahan substrat organik","authors":"Iwan Perala, M. Yani, I. Mansur","doi":"10.30556/jtmb.vol18.no2.2022.1232","DOIUrl":"https://doi.org/10.30556/jtmb.vol18.no2.2022.1232","url":null,"abstract":"Acid mine drainage (AMD) has a negative impact that must be managed because it can cause environmental pollution and disrupt mining operations. Acid mine drainage contains dissolved heavy metals that are harmful to the ecosystem. Sulfate-reducing bacteria (SRB) can be used in acid mine drainage bioremediation. This study aims to analyze pH, C-organic and BPS growing in acid water sediments of coal mines and several other ecosystems, analyze C/N ratio and pH of potential organic substrates, and recover AMD by enrichment of indigenous SRB and addition of organic substrates. The ecosystems observed were AMD sediment, paddy field mud, mangrove sediment, in situ sediment, ditch sediment, and rhizosphere soil. The organic materials tested included water hyacinth compost, a mixture of paddy field mud with wood sawdust, oil palm empty fruit bunch (EFB) compost, chicken manure, cow manure, dairy factory waste, and mixtures thereof. The results showed that SRB could be found in all studied ecosystems in the range of 5.8E+2 – 1.26E+5 MPN-unit/dry weight. The value of the C/N ratio with variations from 9.23-89.5 had a negative correlation with increasing pH. The application of organic matter with concentrations of 3%, 5%, 7%, and 10% helped SRB to raise the pH of AMD to more than 6 and reduced Fe by 88.18 – 97.27%. The highest SRB population was obtained in the mixed treatment of EFB and chicken manure with a population of 2.41E+12 MPN- unit/dry weight.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128355548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis kelayakan investasi penambangan batubara di PT. Cipta Kridatama site PT. KIM, Kabupaten Bungo, Provinsi Jambi","authors":"Qurratul Ayun, R. Juniah, Azwardi","doi":"10.30556/jtmb.vol19.no1.2023.1327","DOIUrl":"https://doi.org/10.30556/jtmb.vol19.no1.2023.1327","url":null,"abstract":"Indonesia economic development cannot be separated from the role of natural resources, one of the natural resources that currently supports the Indonesian economy is coal. This research was conducted in order to see the prospects for coal mining activities at PT. Cipta Kridatama, site PT. Kuansing Inti Makmur (PT KIM), Bungo Regency, Jambi province through an analysis of management strategies in the form of investment feasibility. The research methodology used is descriptive qualitative in nature referring to quantitative studies, comparative studies (comparisons), and correlational studies. Data collection techniques are carried out by: field research, literature study and secondary data collection such as RKAB of the company. Based on field research, the data obtained included cropline roofs and M4 floor seam, coal strike and dip, overall highwall slope and outcrop area (section). The results of the investment feasibility study were obtained from coal resources based on a stripping ratio (SR) of 1:4.56. From the calculation results, the net present value (NPV) is greater than 0, which is 16,169,241,885, so it can be concluded that this project is considered economical and feasible to mine. The internal rate of return (IRR) is 19.807%, means that PT. Cipta Kridatama was able to return the invested capital with an increase in interest rates reaching 19.807%. Meanwhile, based on the payback period (PBP) calculation, it shows that the time needed for the investment capital to return is 5.6 years, this shows that the payback period is smaller than the project implementation period. The project ratio value (PI)>1 is 3.9537 which means the project is feasible to operate. The calculation has adjusted the discount rate, so the present value (PV) of coal mining PT. Cipta Kridatama of IDR 17,981,921,072.4 according to the discount level. Benefit cost ratio (BCR) value from PT. Cipta Kridatama is 24.66, which means the project is feasible to operate with the profits from the project are greater than the expenses so that the project is acceptable or feasible to continue.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117046030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efek perbandingan tinggi dan diameter terhadap kekuatan pilar pada pengujian kuat tekan uniaksial dan pemodelan numerik","authors":"La Ode Dzakir","doi":"10.30556/jtmb.vol19.no1.2023.1316","DOIUrl":"https://doi.org/10.30556/jtmb.vol19.no1.2023.1316","url":null,"abstract":"Pillar is a part of the deposition of excavated material that is left behind to sustain the rock weight above it. The aim of this study was to determine the effect of height and diameter ratio on the strength of the pillar obtained from uniaxial compressive strength testing and numerical modeling. Laboratory test results showed that pillars with a ratio of 1.5 H/D did not show an increase in strength of 1.83%, while pillars with a ratio of 1 H/D gave a more significant increase in strength, which was 32.99%. The numerical modeling simulation with RS2 9.0 software showed that the strength factor values for pillars with an H/D ratio of 1.5, 2 and 1 having values below 1 at the same pressure as laboratory test results. Therefore, the most appropriate pillar design used in underground mining using the room and pillars method was a pillar with a ratio of H/D = 1.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"316 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133774588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rancangan geometri peledakan yang efisien untuk mendapatkan distribusi ukuran fragmentasi batu gamping","authors":"Murad, Septami Setiawati, Wahdaniah Mukhtar","doi":"10.30556/jtmb.vol19.no2.2023.1386","DOIUrl":"https://doi.org/10.30556/jtmb.vol19.no2.2023.1386","url":null,"abstract":"The rock fragmentation distribution resulting from blasting is one of the important factors of the blasting method design model for dismantling excavated materials. Calculation of rock fragmentation resulting from blasting using the R.L. Ash, C.J. Konya, and ICI-Explosive theories. The method for determining the size of rock fragmentation resulting from blasting and analysis of the fragmentation size distribution in blasting activities uses the Kuz-Ram method and Split Desktop 4.0 software. A good blasting geometry design from a technical and economical point of view enables achieving target production according to the design made by the company in producing an average fragmentation size of limestone <50 cm. Blasting geometry applied by PT. Semen Padang produces a hole volume of 275 m3 with a fragmentation of 53.46 cm. The results of the fragmentation design are based on the R.L. Ash theory and the Kuz-Ram method, with a volume of 300.67 m3 in each hole and a fragmentation size of 50.07 cm, while using C.J. Konya analysis resulted in a hole volume of 422.4 m3 with an average fragmentation of 44.17 cm, and ICI-Explosive method resulted in a hole volume of 285 m3 with an average fragmentation of 47.86 cm. Based on blasting geometry calculation, fragmentation analysis and economic calculations, it is shown that the blasting geometry suggestion using C.J. Konya theory is more optimal and feasible to apply because it results in a larger hole blasting volume, higher percentage of fragmentation of <50 cm which is compatible with the bucket capacity, as well as higher revenue and profit compared to the other two methods.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133133658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimasi sumberdaya andesit menggunakan metode ordinary kriging berdasarkan pengukuran geolistrik di PT. Zlaw Group Boyolali, Jawa Tengah","authors":"Hendro Purnomo, R. Prastowo, Muhammad Hafizh Hibullah, Setyo Pambudi","doi":"10.30556/jtmb.vol19.no1.2023.1336","DOIUrl":"https://doi.org/10.30556/jtmb.vol19.no1.2023.1336","url":null,"abstract":"PT. Zlaw Group Boyolali is a company of andesite mining located in Wates Hamlet, Seboto Village, Gladagsari District, Boyolali Regency, Central Java Province. The potential of andesite in the area is encouraging and the absence of supporting data about the distribution and resources of andesite brings PT. Zlaw Group Boyolali to conducting exploration. The objective of this study is to analyze the interpretation of geoelectric measurements of the dipole-dipole configuration and calculate the volume of andesite resources based on geostatistics optimization at the research location and compare the estimation results with previous studies. The research activity was carried out by measuring 2-dimensional geoelectrical resistivity using a dipole-dipole configuration of 12 passes, which covered 100% of the research area. Based on the results of geostatistics optimization, parameters obtained include: nugget 0.224053, sill 0.641390, range 67.749, major/semi-major 1.188, and major/minor 2.073. Soil volume is 1,245,750 m3 with a tonnage of 3,238,950 tons, a weathered andesite volume of 999,656 m3 with a tonnage of 2,599,106 tons, and fresh andesite volume of 1,437,925 m3 with a tonnage of 3,738,605 tons.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127088804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis kelayakan sumberdaya batuan sebagai peluang investasi stone crusher di dataran rendah Prafi","authors":"P. A. Kusumo, D. V. Mamengko","doi":"10.30556/jtmb.vol18.no2.2022.1223","DOIUrl":"https://doi.org/10.30556/jtmb.vol18.no2.2022.1223","url":null,"abstract":"The Prafi/Arfak Lowland has potential rock resources to increase its local government revenue. Stone crusher is used by small-medium scale mining industry that supply raw materials of sands and rocks for infrastructure and road construction in Manokwari Region of West Papua. The method used consists of primary and secondary data collection as well as quantitative data analysis. This analysis aims to assess the feasibility of company’s stone crusher investment. Three main parameters were used in the assessment of investment feasibility, namely NPV (Net Present Value), DPP (Discounted Payback Period), and IRR (Internal Rate of Return). The analysis results reveal Net Present Value (NPV) of Rp. 57.068.789.003,49; Discounted Payback Period (DPP) for 2 (two) years and 11 (eleven) months and the Internal Rate of Return (IRR) of 40.22%. Based on the results of the three-parameter analysis, it can be stated that the investment made by the stone crusher company is considered feasible to run.","PeriodicalId":118039,"journal":{"name":"Jurnal Teknologi Mineral dan Batubara","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131355734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}