Journal of Mineral and Material Science (JMMS)最新文献

IoT Enabled Condition Monitoring Under Predictive Maintenance Framework of Mines and Steel Plant 矿山和钢铁厂预测性维护框架下的物联网状态监测

Journal of Mineral and Material Science (JMMS) Pub Date : 2024-07-03 DOI: 10.54026/jmms/1087

Dr. Prabal Patra

{"title":"IoT Enabled Condition Monitoring Under Predictive Maintenance Framework of Mines and Steel Plant","authors":"Dr. Prabal Patra","doi":"10.54026/jmms/1087","DOIUrl":"https://doi.org/10.54026/jmms/1087","url":null,"abstract":"This case is about a century-old integrated steel plant combined with mines, having more than 0.42 million capitalintensive assets, ages ranging from 0 to 100 years and spreads across 700+ hectares as shown in Figure 1. Assets having varied levels of automation maturity with different maintenance methodologies. It’s about shifting the whole maintenance paradigm from Time-based & Condition-based to Predictive. Through digital initiatives & optimum maintenance cost, we are trying to develop a Maintenance Transformation Roadmap (MTR) to ensure maximum machine availability/ reliability. For this paradigm shift from conventional to predictive maintenance, critical assets were identified through a systematic approach. Under this MTR Journey, to bridge the sensor gap, SMART Sensor (3 axis vibration & Temperature) was identified as the appropriate solution. Customizable In-house SMART Sensor applicable in Mining & Steel industry application and low-cost solution helped in cross locational horizontal. Presently early warning alerts saved 1000+ potential breakdowns on 1200nos critical assets. The Predictive Maintenance Framework has both tangible and intangible benefits. While safety is the most important intangible benefit of this technology, tangible benefits include approved savings of $20 Million. Further, we expect to save $12.5 Million by deploying our Sensor and $35 Million via prevention of breakdowns","PeriodicalId":503317,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"54 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141837828","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

An Investigation of the Tribological and Mechanical Properties of the Hybrid Mg Nanocomposites Manufactured by Mechanical Alloy 通过机械合金制造的混合纳米镁复合材料的摩擦学和力学性能研究

Journal of Mineral and Material Science (JMMS) Pub Date : 2024-04-11 DOI: 10.54026/jmms/1084

Essam B Moustafa

{"title":"An Investigation of the Tribological and Mechanical Properties of the Hybrid Mg Nanocomposites Manufactured by Mechanical Alloy","authors":"Essam B Moustafa","doi":"10.54026/jmms/1084","DOIUrl":"https://doi.org/10.54026/jmms/1084","url":null,"abstract":"This work explores the impact of fly ash and nanoparticle reinforcements (TiO2 , hBN, B4 C) on the mechanical and tribological properties of magnesium nanocomposites produced via mechanical alloying. The investigation revealed that incorporating these reinforcements increased the compressive strength and microhardness of the composites compared to pure Mg. Notably, the Mg-fly ash + B4 C composite exhibited the highest microhardness (50.74 HV), representing a 71.3% increase. Tribological analysis demonstrated that the Mg-fly ash composite and Mg-fly ash + TiO2 composite displayed slightly lower friction coefficients than pure Mg. The Mg-fly ash + hBN composite exhibited the lowest friction coefficient due to the lubricating nature of hBN. In contrast, the Mg-fly ash + B4 C composite showed the highest friction coefficient due to its inherently rough surface. These findings suggest that the developed hybrid magnesium nanocomposites offer a compelling combination of enhanced mechanical properties and tunable tribological behavior, making them suitable for applications demanding both wear resistance and reduced friction.","PeriodicalId":503317,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"5 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140716141","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

Resource Extraction Evaluation Using a Mathematical Programming Framework for Surface-Underground Mining Options and Transitions Optimization 利用数学编程框架进行资源开采评估，以优化地表-地下采矿选择和过渡

Journal of Mineral and Material Science (JMMS) Pub Date : 2024-04-08 DOI: 10.54026/jmms/1083

B. O. Afum

{"title":"Resource Extraction Evaluation Using a Mathematical Programming Framework for Surface-Underground Mining Options and Transitions Optimization","authors":"B. O. Afum","doi":"10.54026/jmms/1083","DOIUrl":"https://doi.org/10.54026/jmms/1083","url":null,"abstract":"A mathematical programming framework based on Mixed Integer Linear Programming (MILP) model for surfaceunderground mining options and transition optimization for resource extraction is presented in this paper. Existing models are mainly based on a stepwise optimization approach with limited constraints which produces localized optimal solutions and are often impractical. For mineral deposits amenable to both surface and underground mining options, the MILP framework determines the most suitable mining option and associated schedule to exploit the orebody. The MILP formulation is tested and implemented on a gold deposit case study. The NPV of the optimal mining option ($ 2.515 billion) is sensitive to the gold price, ore quantity delivered from the underground mine, and delay factor associated in supporting the operational development and stopes. Positive changes in the delay factors associated with operational development support and mining stope support have more impact on the NPV than negative changes. However, the NPV is highly sensitive to the mining stope support delay than the operational development support delay","PeriodicalId":503317,"journal":{"name":"Journal of Mineral and Material Science (JMMS)","volume":"185 S497","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140731128","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

Absorption Band at 1600 cm-1 in the IR Spectra of Irradiated MgO Crystals 辐照氧化镁晶体红外光谱中 1600 cm-1 处的吸收带

Journal of Mineral and Material Science (JMMS) Pub Date : 2024-04-01 DOI: 10.54026/jmms/1082

Kvatchadze V

引用次数: 0