Journal of Mines, Metals and Fuels最新文献_第2页

Rise, Rise and Rise for the Solar Industries: What Legacy SAMC and MOGI Companies can Learn from it - Part 1 太阳能产业的崛起、崛起和崛起：传统的 SAMC 和 MOGI 公司可以从中学到什么 - 第一部分

Journal of Mines, Metals and Fuels Pub Date : 2024-07-22 DOI: 10.18311/jmmf/2024/44843

Jayanta Bhattacharya

引用次数: 0

Impact of In-Seam Dirt Bands on the Performance of Surface Miners in Coal Mines 煤层内泥带对煤矿露天采矿者工作表现的影响

Journal of Mines, Metals and Fuels Pub Date : 2024-06-12 DOI: 10.18311/jmmf/2024/41782

Om Prakash Singh, P. Dhekne, Manoj Pradhan

{"title":"Impact of In-Seam Dirt Bands on the Performance of Surface Miners in Coal Mines","authors":"Om Prakash Singh, P. Dhekne, Manoj Pradhan","doi":"10.18311/jmmf/2024/41782","DOIUrl":"https://doi.org/10.18311/jmmf/2024/41782","url":null,"abstract":"Surface miner was introduced for coal extraction at Lakhanpur open cast project of Mahanadi Coalfields Limited in 1999 for the first time and owing to its success and benefits it offered like elimination of drilling and blasting, smooth and stable high wall, selective mining for quality control and uniform output fragment size (-100mm) etc. it was adopted in many open cast coal mines and now has become a disruptive mass production technology for coal mining in India. In terms of coal resources in the country, Odisha stands first with 88.104 BT resources but the coal seams in Odisha are characterized by its high ash content and interlaced dirt bands (10 cm to 1.5 m) often termed as rejects. For maintaining coal quality, these dirt bands predominantly of sandstone and shale are also cut by surface miners and are segregated at the time of loading and transported to reject dumps or overburden dumps. These dirt bands have a significant impact on the performance of surface miners and must be taken into account during their selection. The authors, based on the intensive field study undertaken at different opencast coal mines in Odisha highlighted the impact of in-seam dirt bands in coal seams on the performance indicators of surface miners which are normalized production rate, diesel and pick consumption for cutting 1000te of material in this paper. Pick consumption was found to vary linearly with the quantum of abrasive material cut. Empirical relations for estimating monthly normalized production, diesel consumption, and pick consumption of surface miners operating in coal seams with intermittent dirt bands with a coefficient of determination (R2) of 0.74, 0.84, and 0.73 respectively were also developed. The developed relations were validated with the field data and the % error was found to be within +20%. This study helps the coal mining companies in the selection of suitable surface miners for achieving targeted production and also for planning inventory of picks and diesel during its operation.","PeriodicalId":39575,"journal":{"name":"Journal of Mines, Metals and Fuels","volume":"135 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141351407","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

Synthesis and Tensile Characterisation of B4C Particles Reinforced Al7475 (Al-Zn) Alloy Composites B4C 粒子增强 Al7475（Al-Zn）合金复合材料的合成与拉伸表征

Journal of Mines, Metals and Fuels Pub Date : 2024-06-07 DOI: 10.18311/jmmf/2024/43745

D. Madhu, Shanawaz Patil, Madeva Nagaral, Samuel Dayanand, Chandrashekar Anjinappa, Ali Majdi, Abduljabar H. Ali, Sameer Algburi, Abdul Razak, Basawaraj

引用次数: 0

Performance Analysis of Double Pipe Heat Exchanger Using Nano Fluids 使用纳米流体的双管热交换器性能分析

Journal of Mines, Metals and Fuels Pub Date : 2024-06-04 DOI: 10.18311/jmmf/2024/42128

C. P. Ajey, Kanchiraya Shivalingaiah, G. Chalageri, Shivakumar K. Malladad, K. G. Shetty, G. Vikas, R. B. Ashok

{"title":"Performance Analysis of Double Pipe Heat Exchanger Using Nano Fluids","authors":"C. P. Ajey, Kanchiraya Shivalingaiah, G. Chalageri, Shivakumar K. Malladad, K. G. Shetty, G. Vikas, R. B. Ashok","doi":"10.18311/jmmf/2024/42128","DOIUrl":"https://doi.org/10.18311/jmmf/2024/42128","url":null,"abstract":"Choosing an appropriate heat transfer fluid is a crucial factor in the design of a heat exchange system. A nanofluid is a colloidal mixture composed of a base fluid and nanoparticles. It is a promising heat transfer fluid in various applications due to its improved thermal conductivity and heat transfer rate. The increasing demand and acceptance for nano-fluids as heat transfer fluids in various applications have led to an increase in research investigations on this topic. Nanofluid technology has recently expanded to include the impregnation of multiple nanoparticles in base fluids, known as hybrid or nanocomposites. For this study, we have chosen three distinct nanoparticles and two base fluids to examine their thermo-physical characteristics and heat transmission rate. Nanofluid is prepared via the sonication method. The experiment is used to determine the thermosphysical characteristics of various nano-fluids. The double-pipe heat exchanger is employed to measure the heat transfer rate and efficiency of nano-fluids. Among six samples prepared in the present work, the ZnO2+CNT+TiO2+EG sample had shown reduced kinematic and dynamic viscosities for all the temperature ranges. However, an average value of heat transfer rate was recorded for ZnO2+CNT+TiO2+EG at 675.87 (J/s) for parallel flow and 630.79 (J/s) for counter flow. And the least effectiveness was recorded for distilled water. The hybrid nanofluid demonstrates a superior heat transfer rate and effectiveness in both parallel flow and counter flow applications. Therefore, it may be efficiently utilised in many heat transfer applications.","PeriodicalId":39575,"journal":{"name":"Journal of Mines, Metals and Fuels","volume":"223 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141386879","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

Optimization Studies for Extraction of Copper from Rocks 从岩石中提取铜的优化研究

Journal of Mines, Metals and Fuels Pub Date : 2024-06-03 DOI: 10.18311/jmmf/2024/35960

Santosh Walke, Varghese Manappallil Joy, Abeer Al Saadi, Manahil Al Khusaibi

引用次数: 0

Investigation of Mechanical and Wear Behaviour of Al5056-Carbon Nanotube -Graphene Hybrid MMCs using Powder Metallurgy Route 利用粉末冶金工艺研究 Al5056-碳纳米管-石墨烯混合 MMC 的机械和磨损行为

Journal of Mines, Metals and Fuels Pub Date : 2024-01-12 DOI: 10.18311/jmmf/2023/35156

N. C. Reddy, B. M. Girish, B. Satish, Mahesh B. Davanagere, L. Girisha, E. R. Babu, C. Selvan

引用次数: 0

An Analytical Review on Comparative Analysis of Ground Improvement Using Various Admixtures 使用各种外加剂进行地基改良对比分析综述

Journal of Mines, Metals and Fuels Pub Date : 2024-01-12 DOI: 10.18311/jmmf/2023/35343

Pinak Ray, Subham Roy

{"title":"An Analytical Review on Comparative Analysis of Ground Improvement Using Various Admixtures","authors":"Pinak Ray, Subham Roy","doi":"10.18311/jmmf/2023/35343","DOIUrl":"https://doi.org/10.18311/jmmf/2023/35343","url":null,"abstract":"Soil improvement in the most sustainable way is the need of the hour and prime importance for the modern construction industry. Most of the time, it has been observed that the soil below the foundation is not mechanically capable of withstanding the load from the structure, and it might cause the failure/collapse of the structure. To prevent it, various significant soil improvement techniques have been introduced, such as mechanical stabilisation, thermal methods, use of admixtures etc. Ground improvement using admixtures involves the addition of various chemical alternatives to the subsoil to enhance its loadbearing capacity. These procedures also give long-term sustainability regarding the soil's bearing capacity. Various potential scholarly works on ground improvement have been done, i.e., the addition of bentonite, kaolinite, bitumen, rice husk ash, pond ash, lime, and cement into the soil, which has been intensely reviewed. From the combined observed experimental results of several researchers presented in this paper, it can be identified how much improvement of a particular soil property can be made by adding several types of admixtures. A clear idea can be generated as to which type of admixture is most suitable for the improvement of a particular type of soil and which soil properties can be improved by the addition of that admixture.","PeriodicalId":39575,"journal":{"name":"Journal of Mines, Metals and Fuels","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140509310","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

Production and Characterization of Hydrochar and Biocrude of Yard Waste from Tectona Grandis Using Hydrothermal Carbonization 水热炭化制备大构造场废弃物烃类及生物原油的研究

Journal of Mines, Metals and Fuels Pub Date : 2023-03-15 DOI: 10.18311/jmmf/2022/31224

A. N, P. Reddy, Pritam Bhat, A. Iyengar

{"title":"Production and Characterization of Hydrochar and Biocrude of Yard Waste from Tectona Grandis Using Hydrothermal Carbonization","authors":"A. N, P. Reddy, Pritam Bhat, A. Iyengar","doi":"10.18311/jmmf/2022/31224","DOIUrl":"https://doi.org/10.18311/jmmf/2022/31224","url":null,"abstract":"Research on the study of tectona grandis for adsorption of dyes, extraction of chemicals dissolved in it for pharma industries is studied from many years. Few researchers have explored the use of tectona grandis in thermo-chemical process such as torrefaction, and pyrolysis. But the study to use of Hydrothermal Carbonization (HTC) to convert leaf litter to value added products of tectona grandis for varying process conditions is not performed. This research is focused to ascertain the role of HTC process parameters on hydrochar and biocrude produced from tectona grandis leaf litter. HTC experiments were conducted in a batch reactor. Various process parameters such as temperature and residence time which affects the yield of hydrochar is reported. HTC of yard waste is carried out at 210oC for a residence time of 20 min in a batch reactor which gives the hydrochar yield of 65% with higher heating value of 26.63 MJ/kg. Characterization of hydrochar performed with proximate analysis, ultimate analysis, SEM and FTIR showed that hydrochar properties are better compared to feedstock properties which can be effectively used as solid fuel. The liquid bio crude separated from solid hydrochar is analyzed using UV spectroscopy. It is found to contain the compounds such as 5-HMF, dibenzofuran, naphthalene and anthracene.\u0000 ","PeriodicalId":39575,"journal":{"name":"Journal of Mines, Metals and Fuels","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48881975","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

A Deep Study on Machine Learning Techniques for Tool Condition Monitoring in Turning of Titanium-based Superalloys. 基于机器学习技术的钛基高温合金车削刀具状态监测研究。

Journal of Mines, Metals and Fuels Pub Date : 2023-03-15 DOI: 10.18311/jmmf/2022/31235

Sanjeet Jakati, V. Koti, Pramodkumar S. Kataraki, M. Mazlan, M. F. Hamid

引用次数: 0

Lower Wishbone Modeling and Analysis for Commercial Vehicle Independent Suspension System 商用车独立悬架系统下横臂建模与分析

Journal of Mines, Metals and Fuels Pub Date : 2023-03-15 DOI: 10.18311/jmmf/2022/31046

T. Prabaharan, A. Bovas Herbert Bejaxhin, P. Periyaswamy, N. Ramanan, K. Ramkumar, Chandramohan P

引用次数: 0