Indonesian Mining Journal最新文献

Analysis of explosive energy distribution at Pit 7 West PT. Makmur Mandiri Utama Binungan Suaran - Berau, East Kalimantan Province 东加里曼丹省Makmur Mandiri Utama Binungan Suaran - Berau 7号坑West PT爆炸能量分布分析

Indonesian Mining Journal Pub Date : 2022-12-01 DOI: 10.30556/imj.vol25.no2.2022.1346

M. Gusman, Fellya Septia Fauzi, Andre Octova

{"title":"Analysis of explosive energy distribution at Pit 7 West PT. Makmur Mandiri Utama Binungan Suaran - Berau, East Kalimantan Province","authors":"M. Gusman, Fellya Septia Fauzi, Andre Octova","doi":"10.30556/imj.vol25.no2.2022.1346","DOIUrl":"https://doi.org/10.30556/imj.vol25.no2.2022.1346","url":null,"abstract":"Blasting geometry and blasting material filling are closely related to the rock mass characteristics and the geological conditions to obtain ideal fragmentation. Blastability Index analysis, including Description of Rock Mass, Combined Plane Spacing, Combined Plane Orientation, Specific Gravity Influencey, and Hardness, are the alternative geometry experiment conducted to overcome the problem of rock fragmentation so that the speed of excavation equipment can increase according to the productivity of Komatsu PC2000 plan at PT. BUMA Jobsite BINSUA. Furthermore, the actual rock values obtained from blasting location and alternative geometry recommendations using R.L.Ash theory combined with Vertical Energy Distribution theory. In the C2 layer with a rock factor value of 5.95, the recommended load is 7.2 m, space is 8.3 m, and the VED explosive power is 48%. In layer D2 the rock factor value is 6.89 with a load of 7.5 m, space of 8.3 m, and 55% VED explosive charge. While in the DU layer, the rock factor value is 6.39 with a load of 7.3 m, 8.4 m space, and 51% VED filling of explosives. Prediction of blasting fragmentation analysis using Kuz-ram theory obtained fragmentation > 100 cm, namely 14.99% for the C2 layer, 14.84% for the D2 layer, and 14.82% for the DU layer.","PeriodicalId":115518,"journal":{"name":"Indonesian Mining Journal","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114267540","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}

引用次数: 0

Development of laterite ore processing and its applications 红土矿石加工及其应用研究进展

Indonesian Mining Journal Pub Date : 2022-12-01 DOI: 10.30556/imj.vol25.no2.2022.1261

F. Bahfie, A. Manaf, W. Astuti, F. Nurjaman, Erik Prastyo, U. Herlina

{"title":"Development of laterite ore processing and its applications","authors":"F. Bahfie, A. Manaf, W. Astuti, F. Nurjaman, Erik Prastyo, U. Herlina","doi":"10.30556/imj.vol25.no2.2022.1261","DOIUrl":"https://doi.org/10.30556/imj.vol25.no2.2022.1261","url":null,"abstract":"Nickel ore is found in two types sulfide and laterite. The sulfide is a nickel ore that has high nickel content and low reserves of natural resources than of the zinc laterite. In contrast, the laterite is a rock mineral that contains the iron-nickel oxide compounds. There are two methods of processing nickel laterite, namely hydrometallurgy and pyrometallurgy. The former is a method that uses leaching by a chemical solution or solid such as acid, as a reducing agent. The alkaline leaching (ammonia) is the most optimal method to obtain a nickel grade with the highest recovery but it needs more modification. Pyrometallurgical method uses high heat up to 1800°C, so it requires a lot of energy and needs improvement to decrease the carbon usage. The rotary kiln-electric furnace method is the optimal method for developing the nickel laterite. These methods generate products that can be applied to various fields. For example, the pyrometallurgy method produces nickel pig iron and ferronickel as raw materials for stainless steel and steel alloys. The hydrometallurgy method produces nickel sulfate and nickel oxide with a purity of 99% by weight as raw materials for magnets, sensors, and batteries. Hence, the hydrometallurgy method still needs improvements for the environmentally friendly reagent. Therefore, bioleaching will be a nickel laterite leaching process in the future by using bacteria as the reducing agent.","PeriodicalId":115518,"journal":{"name":"Indonesian Mining Journal","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130534180","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}

引用次数: 0

The effect of using CaCO3 and lime glass in the probability of pore structure forming on a ceramic glass based on scoria basalt rocks 碳酸钙和石灰玻璃对渣玄武岩陶瓷玻璃孔隙结构形成概率的影响

Indonesian Mining Journal Pub Date : 2022-12-01 DOI: 10.30556/imj.vol25.no2.2022.1281

D. C. Birawidha, Y. Hendronursito, K. Isnugroho, Muhammad Amin, A. S. Handoko, Sentausa Nuringjati, Syafriadi Syafriadi

{"title":"The effect of using CaCO3 and lime glass in the probability of pore structure forming on a ceramic glass based on scoria basalt rocks","authors":"D. C. Birawidha, Y. Hendronursito, K. Isnugroho, Muhammad Amin, A. S. Handoko, Sentausa Nuringjati, Syafriadi Syafriadi","doi":"10.30556/imj.vol25.no2.2022.1281","DOIUrl":"https://doi.org/10.30556/imj.vol25.no2.2022.1281","url":null,"abstract":"With the development of technology lately, the technology for making lightweight materials is also growing, where the goal is to reduce the total weight of the material without reducing its mechanical strength. Several parameters that influence the manufacture of lightweight materials are the number of pores, materials weight, and physical resistance. One commonly used method is mixing ceramic glass with a foaming agent. In this study, basalt rock from East Lampung, Indonesia, and lime glass was used as a ceramic glass material mixed with CaCO3, which melted down at a temperature of 1200 0C. Variations in composition were carried out by mass comparison between basalt and lime glass, namely A sample (100:0), B sample (70:30), C sample (50:50), and D sample (30:70) with 50%wt CaCO3 added for each sample and heated up to 1200 0C. Treatment variations (annealed and normalized) are also applied to see the phenomena occur. Based on the characterization results, the best sample obtained is in B sample with normalized treatment, whose has porosity value of 53.2% and density value of 1.08 gr/cm3. Based on the results of the SEM test, the pores with a size ≤ 0.5µm are 95%, and ≥ 0.5µm are 5%, where the crystals formed are pyroxene and calcite with the compositions of CaO and SiO2, respectively 39.46% and 41.90%.","PeriodicalId":115518,"journal":{"name":"Indonesian Mining Journal","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129699519","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}

引用次数: 0

GIS application for monitoring the mine areas GIS在矿区监测中的应用

Indonesian Mining Journal Pub Date : 2022-12-01 DOI: 10.30556/imj.vol25.no2.2022.1283

Weningsulitri Weningsulitri, R. Damayanti, Tri Widarti Masduki, Jeani Sulistyowati, M. Lutfi, B. Sirait

{"title":"GIS application for monitoring the mine areas","authors":"Weningsulitri Weningsulitri, R. Damayanti, Tri Widarti Masduki, Jeani Sulistyowati, M. Lutfi, B. Sirait","doi":"10.30556/imj.vol25.no2.2022.1283","DOIUrl":"https://doi.org/10.30556/imj.vol25.no2.2022.1283","url":null,"abstract":"Technology development is growing fast, such as satellite imagery and GIS for various applications, one of them is mining technology. Several regulations for the mining sector regarding the mandatory use of satellite imagery have been stated in some regulations to be implemented in mining sectors. Some mine environmental studies showed that the remote sensing and the GIS analysis could detect the small changes in its environment area with effective cost as the coverage of the sensory images is quite broad. The purpose is to monitor land alteration by observing the changes at the taking place, in either the number of voids or their area, using the 2019 and 2020 SPOT 6/7 image data. The algorithm change detection analyzes the number and void changing, mainly to provide a visual description of the void image trend and other applications. The trend of void numbers and its area can be predictable and correlated with the coal mine activities yearly. The results of 2019 SPOT 6/7 image showed that the total area of coal mine pit increased from 2% of the total area of the IUP to 2.53% in 2020. But, its allegation of environmental changes due to the mining activities will be strengthened by a ground check survey that cannot be conducted now.","PeriodicalId":115518,"journal":{"name":"Indonesian Mining Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125315304","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}

引用次数: 0

Characterization, beneficiation, and rees extraction of coal bottom ash 煤底灰的特性、选矿和提取

Indonesian Mining Journal Pub Date : 2022-12-01 DOI: 10.30556/imj.vol25.no2.2022.1343

I. Rodliyah, S. Rochani, Sariman Sariman, Suganal Suganal, D. Umar, P. Pramusanto

{"title":"Characterization, beneficiation, and rees extraction of coal bottom ash","authors":"I. Rodliyah, S. Rochani, Sariman Sariman, Suganal Suganal, D. Umar, P. Pramusanto","doi":"10.30556/imj.vol25.no2.2022.1343","DOIUrl":"https://doi.org/10.30556/imj.vol25.no2.2022.1343","url":null,"abstract":"Rare earth elements are strategic materials. The elements have critical roles in meeting the needs of raw material for producing the modern industrial products. Most of the REE minerals is available in the form of associated minerals. One of them is coal. In terms of obtaining an overview regarding the possibility of coal to be a source of REEs, a research was carried out by beneficiating the bottom ash of the coal using a shaking table and a magnetic separator, and was followed by extracting the REEs using the alkaline fusion and leaching them using the nitric acid. The results showed that the bottom ash of gasified coal from the Palimanan pilot plant contained cerium, lanthanum, samarium, neodymium, praseodymium, europium, gadolinium, dysprosium, and yttrium, with a total content of 77.85 ppm. Concentrating the REEs using the shaking table and the magnetic separator result in a recovery of 32.96% and 50.5%, respectively. Extracting the REEs by alkaline fusion using NaOH as flux was not promising while leaching with nitric acid was able to extract the REEs with various percentage extraction values, and the highest extraction for Neodymium was 73.46% under conditions of 2M nitric acid leaching and heated at 80°C.","PeriodicalId":115518,"journal":{"name":"Indonesian Mining Journal","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132950666","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}

引用次数: 0

Effect of low rank coal temperature and moisture content on slow pyrolysis process 低煤阶温度和含水率对慢热解过程的影响

Indonesian Mining Journal Pub Date : 2021-10-01 DOI: 10.30556/imj.vol24.no2.2021.1234

S. Handoko, S. Rianda, N. Nurhadi

引用次数: 1

The application of failure method probability for analyzing in pit dump stability at West Block ‘X’ pit PT Berau Coal - East Kalimantan 应用概率破坏法分析东加里曼丹伯劳煤矿西区块X矿坑排土场稳定性

Indonesian Mining Journal Pub Date : 2021-10-01 DOI: 10.30556/imj.vol24.no2.2021.1217

Y. Adriansyah, Rifqi Dwi Saprana, I. Sophian, N. Khoirullah

{"title":"The application of failure method probability for analyzing in pit dump stability at West Block ‘X’ pit PT Berau Coal - East Kalimantan","authors":"Y. Adriansyah, Rifqi Dwi Saprana, I. Sophian, N. Khoirullah","doi":"10.30556/imj.vol24.no2.2021.1217","DOIUrl":"https://doi.org/10.30556/imj.vol24.no2.2021.1217","url":null,"abstract":"West Block 'X' pit is one of the coal mining locations operated by the Lati Mine Operation – PT Berau Coal. Administratively, the Lati Mine is located as part of Berau Regency – East Kalimantan. The study area is located at the north side of the concession, in a syncline fold structure zone. The disposal design in this area needs to special attention from slope stability aspect due it is located on the wing of a mega syncline with a certain slope and constituent of unconsolidated materials. The pit design needs to be stable. The purpose of this study is to determine the level of stability of the in-pit dump by analyzing the current in-pit dump stability based on the value of the safety factor (FS) and the probability of failure (PoF). The method used in this study is a probabilistic analysis of slope stability based on the Morgenstern-Price method to obtain the value of the safety factor and the probability of failure. The study results show that the slope is in the safe category (stable slope) in the range of PoF values 0 – 1%, marginal slope 1 – 12%, and unstable slope above 12%. Based on such as results, it is necessary to modify the slope geometry categorized as unstable to carry out mine operation safely underneath the toe of slope.","PeriodicalId":115518,"journal":{"name":"Indonesian Mining Journal","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126795145","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}

引用次数: 0

Growth and production of tea plant (Camellia sinensis (L.) O Kuntze) after pruning with bio-organomineral ameliorant 茶树(Camellia sinensis (L.))生长与生产O Kuntze)修剪后用生物有机改良剂

Indonesian Mining Journal Pub Date : 2021-10-01 DOI: 10.30556/imj.vol24.no2.2021.1235

R. Wulansari, F. Athallah, E. Pranoto, M. Maryono, Didit Darmawan, Budhy Agung Supriyanto

{"title":"Growth and production of tea plant (Camellia sinensis (L.) O Kuntze) after pruning with bio-organomineral ameliorant","authors":"R. Wulansari, F. Athallah, E. Pranoto, M. Maryono, Didit Darmawan, Budhy Agung Supriyanto","doi":"10.30556/imj.vol24.no2.2021.1235","DOIUrl":"https://doi.org/10.30556/imj.vol24.no2.2021.1235","url":null,"abstract":"Tea plant (Camellia sinensis (L.) O Kuntze) is one of the important plantation commodities that has long been cultivated in Indonesia. Mineral based ameliorant fertilization is one of the important factors to produce high productivity and maintenance of healthy plants. Ameliorant bio-organomineral (BIOM) is a fertilizer that utilizes mineral resources, potential microbes, and organic matter. This study aimed to determine the effect of BIOM's ameliorant on plant health and tea productivity after pruning. The Randomized Block Design (RBD) was accomplished by 8 treatments and three replications (100% conventional fertilizer, 100% BIOM, 80% single fertilizer + 100% BIOM, 80% conventional fertilizer + 80% BIOM, 80% conventional fertilizer + 60% BIOM, 60% conventional fertilizer + 100% BIOM, 60% conventional fertilizer + 80% BIOM, and 60% conventional fertilizer + 60% BIOM). The results showed that there was a significant effect of the combination of conventional fertilizer and BIOM ameliorant on shoot production and pekoe percentage, but not significantly different in tipping production, pekoe shoot ratio and banji shoots. The combination of 60% conventional fertilizer and 60% BIOM showed the highest total production of 31.81 kg/plot. Shoot production in the BIOM treatment was 17.36% higher than that of the conventional fertilizer application. The application of BIOM ameliorant was able to improve the plant health after pruning on the GMB 7 clone.","PeriodicalId":115518,"journal":{"name":"Indonesian Mining Journal","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134599836","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}

引用次数: 0

Effect of sulfur in the reductants on sulfidation mechanism of nickel laterite 还原剂中硫对镍红土硫化机理的影响

Indonesian Mining Journal Pub Date : 2021-10-01 DOI: 10.30556/imj.vol24.no2.2021.1216

F. Nurjaman, Yuliana Sari, A. S. Handoko, F. Bahfie, U. Herlina, Muhammad Miftahurrahman, D. Priadi, D. Ferdian, B. Suharno

{"title":"Effect of sulfur in the reductants on sulfidation mechanism of nickel laterite","authors":"F. Nurjaman, Yuliana Sari, A. S. Handoko, F. Bahfie, U. Herlina, Muhammad Miftahurrahman, D. Priadi, D. Ferdian, B. Suharno","doi":"10.30556/imj.vol24.no2.2021.1216","DOIUrl":"https://doi.org/10.30556/imj.vol24.no2.2021.1216","url":null,"abstract":"Processing nickel laterite conventionally, namely by pyrometallurgy method, requires high temperature and energy, results in a costive process. Due to its lower temperature reduction process, selective reduction with additives could be an alternative in nickel ore processing. Additives such as sulfur/sulfate have a critical role in promoting the low melting point phase. Sulfur is also found in coal. Therefore, it is important to investigate the effect of sulfur content in reductant on selective reduction of lateritic nickel ore. In this work, the effect of sulfur content (2.68% and 5% S) in anthracite coal as a reductant on selective reduction of limonitic ore was studied clearly. Nickel ore, reductant and sodium sulfate were mixed homogenously and pelletized up to 10-15 mm in diameter. Pellets were reduced using a muffle furnace at 950 to 1150°C for 60 min. Reduced pellets were crushed into -200 mesh before separating the ferronickel and its impurities using a wet magnetic separation process. The result showed that the anthracite coal with 5% S produced concentrate containing 3.56% Ni with 95,97% recovery, which is higher than 2.68% S. The sulfur content in reductant could replace the addition of sulfur/sulfate as the additives in the selective reduction of lateritic nickel ore.","PeriodicalId":115518,"journal":{"name":"Indonesian Mining Journal","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132333150","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}

引用次数: 2

Study on chemical characteristics of coal and biomass blend and the tendency of its ash deposition 煤与生物质混合料的化学特性及其灰沉降趋势研究

Indonesian Mining Journal Pub Date : 2021-10-01 DOI: 10.30556/imj.vol24.no2.2021.1242

D. Umar, Tati Rohayati

引用次数: 1