Search Results - "Materials Proceedings"

This comparative study investigates the pozzolanic potential of volcanic rocks sourced from the Aegean Islands, Greece, as additives in cement. The utilization of volcanic materials as pozzolanic additives has gained interest due to its ability to enhance the performance and sustainability of cement...

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A reliable, sustainable, and transparent supply of critical raw materials is vital for developing future technologies and transitioning to a carbon emission-free world. However, mining can generate social, economic, and environmental impacts, compromising the sector’s public perception and jeopardis...

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A new gravitational energy storage system is studied, which uses a reversible conveyor belt to elevate granular material and a regenerative motor for energy harvesting during the downward movement of material. This system can be installed in decommissioned open-pit mines, which offer suitable topogr...

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Mining operations, as with all industrial operations, have a significant impact on the environment both through the generation of waste and through landscape change. In view of this, pioneering and sustainable post-mining technologies are demanded to reduce environmental impact. Clean energy can be...

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The successful commercialization of the results of research works, R&D projects and inventions, as well as the cooperation between research centres, industry and business, is becoming commonplace and crucial in regional development. Regardless of the scientific level of the research results, the...

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Nordic and West Balkan countries are major investment regions in Europe for greenfield and brownfield mineral exploration; however, the availability of qualified technical, scientific and managerial personnel involved in the whole mineral cycle is limited, especially in West Balkan countries. The pa...

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In this paper, we propose a solution for the enrichment of CO₂-containing streams from the production of magnesium oxide based on an oxyfuel process for further utilization as raw materials in the carbonation of building materials. A simulation of a specific case in the magnes...

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Geothermal energy is typically produced from underground reservoirs using water as the working fluid to transfer heat energy to surface and eventually to the delivery point. CO₂ has been proposed as an alternative working fluid due to its improved mobility, density and its sup...

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Lithium, that is now exclusively produced outside the European Union (EU), is needed urgently for the green energy transition. The EU has promising lithium projects; however, the social license to operate (SLO) is important for their long-term viability. In this paper, four lithium projects are prel...

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In line with Sustainable Development Goal 9 (sustainable industrialisation and innovation), environmentally responsible engineering designs in modern robotics should consider factors such as renewability, sustainability, and biodegradability. The robotics sector is growing at an exponential rate and...

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The mining industry is by nature a challenging and demanding sector. Beyond ore extraction, management, processing, and transportation are involved in mining activities. Mining operations, often located in geographically remote and isolated areas, are capital-intensive and have substantial environme...

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The vulnerability of economies and the associated familiar lifestyles have led to numerous policy measures in Europe. The proposed Critical Raw Materials Act (CRMA) sets indicative targets for 2030. A sustainable change in the supply situation requires the targeted exploration of raw materials preci...

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This paper analyzes the airflow requirements of underground operations and the accurate assessment of future conditions so as to effectively adjust ventilation parameters. More particularly, ML techniques are utilized to capture patterns or prevailing conditions and to be able to generalize/predict...

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This paper investigated the potential of thiosulfate as an alternative to cyanide for gold recovery from pressure oxidation residues. Thiosulfate leaching experiments were conducted under controlled conditions, varying parameters such as initial thiosulfate concentration, initial pH, temperature and...

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The purpose of this study is to explore the potential influence of cyclic freezing–thawing on the flexural strength of Greek natural stones that are extensively utilized for construction or decoration purposes. Such testing approaches are an indispensable part of the stone selection criteria due to...

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The Greek ferronickel industry faces the challenge of restructuring and reoperation in the future, given that privatization is in progress, including the acquisition of the company’s assets for a joint venture enterprise. Within this framework, the current paper aims to contribute to the discussion...

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Acid sulfate waters originated from acid rock drainage (ARD), affecting the La Silva stream (El Bierzo, Spain), present anomalously high values of rare earth elements and yttrium (REY). These REY are maintained dissolved along the water stream as sulfate ions forming complexes like REYSO<sub>4...

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Geothermal energy is typically produced by a collection of wells which drain a reservoir. Engineers’ experience and reservoir monitoring data are employed to properly determine the wells in operation and their production rate. However, identifying the optimal well configuration which contributes the...

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In the context of the lignite phase-out plan in Greece, the aim of the Public Power Corporation (PPC) is sustainable mine closure and land reclamation and, at the same time, the enhancement of safe mining and post-mining activities. The main objective of this study is to provide a methodology to ide...

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Fluorite-rich sludge is the main waste from dicalcium phosphate (DCP) production. This sludge consists of 40–60% of CaF₂, which precipitates during the reaction between fluorapatite (the main component of raw phosphorite material) and HCl. In addition, the sludge contains elev...

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