References of "Pirard, Eric"
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See detailMatières premières et environnement - Défis pour le développement des compétences en Afrique Centrale
Pirard, Eric ULg

Scientific conference (2017, May 16)

Historique des programmes de formation que l'ULiège a mis en place à destination de l'Afrique dans le domaine des ressources minérales. Obstacles rencontrés à la mise en oeuvre de certains projets et ... [more ▼]

Historique des programmes de formation que l'ULiège a mis en place à destination de l'Afrique dans le domaine des ressources minérales. Obstacles rencontrés à la mise en oeuvre de certains projets et défis qui nous attendent. Perception des stratégies propres à l'espace francophone dans une dynamique de numérisation et de mondialisation tous azimuts. [less ▲]

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See detailSHAPE ANALYSIS OF FINE AGGREGATES USED FOR CONCRETE
HE, Huan; Courard, Luc ULg; Pirard, Eric ULg et al

in Image Analysis and Stereology (2016), 35(3), 159-166

Fine aggregate is one of the essential components in concrete and significantly influences the material properties. As parts of natures, physical characteristics of fine aggregate are highly relevant to ... [more ▼]

Fine aggregate is one of the essential components in concrete and significantly influences the material properties. As parts of natures, physical characteristics of fine aggregate are highly relevant to its behaviors in concrete. The most of previous studies are mainly focused on the physical properties of coarse aggregate due to the equipment limitations. In this paper, two typical fine aggregates, i.e. river sand and crushed rock, are selected for shape characterization. The new developed digital image analysis systems are employed as the main approaches for the purpose. Some other technical methods, e.g. sieve test, laser diffraction method are also used for the comparable references. Shape characteristics of fine aggregates with different origins but in similar size ranges are revealed by this study. Compared with coarse aggregate, fine grains of different origins generally have similar shape differences. These differences are more significant in surface texture properties, which can be easily identified by an advanced shape parameter: bluntness. The new image analysis method is then approved to be efficient for the shape characterization of fine aggregate in concrete [less ▲]

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See detailFrom resource to process efficiency. Educating a new generation of georesources engineers
Pirard, Eric ULg; Fiorentino, Rosalia ULg

in Mazijn, Bernard (Ed.) Proceedings 8th Conference on Engineering Education for Sustainable Development (2016, September)

Even though the Circular Economy paradigm clearly puts the emphasis on recycling, it is essential to understand that we will still need for decades to explore and find resources in the earth crust. Mining ... [more ▼]

Even though the Circular Economy paradigm clearly puts the emphasis on recycling, it is essential to understand that we will still need for decades to explore and find resources in the earth crust. Mining is vital to feed the loop and make sure enough metals and minerals are made available to society. But, mining is also one of the most challenging industrial operations when it comes to sustainability objectives. A modern education in mineral resources engineering must build on a strong technical background but give students the opportunity to confront their knowledge with societal needs and responsibilities. The EMerald Erasmus Mundus Master program in Georesources Engineering was set up by four leading European universities with the clear objective to educate responsible professionals who will be actors of sustainable solutions. Therefore, the University of Lorraine, the Lulea Technical University, the TU Bergakademie Freiberg and the University of Liege (coordinator) designed a unique curriculum bridging the traditional gap between natural sciences and engineering, encompassing the valley too often separating the industrial operators from the stakeholders of a mining project. The program offers a unique blend of courses from geology to mineral processing with the aim to familiarize students with the most advanced tools for improving the efficiency of processes. Field trips and industrial visits are a key component of this program as are the non-technical seminars delivered by professionals (lawyers, entrepreneurs, NGO leaders, etc.). Evaluation is often based on written reports, documentary research and short oral presentations to make sure students acquire the indispensable soft skills for efficient communication on environmental and societal issues linked to the impact of extractive activities. Internships and hands-on practices on pilot platforms or laboratory equipments are absolutely essential to reach the highest standards and meet the objectives of the master program. This is costly and can only be maintained thanks to the strong presence of the participating universities in research programs. All four universities are core partners of the EIT Raw Materials knowledge innovation community. This gives an additional leveraging effect when it comes to the education of young entrepreneurs with a strong sustainability mindset. [less ▲]

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See detailEngineering education at the heart of the Raw Materials Value Chain
Pirard, Eric ULg; Sonnemann, Guido

in Mazijn, Bernard (Ed.) Proceedings 8th Conference on Engineering Education for Sustainable Development (2016, September)

EIT Raw Materials has the mission to reinforce Europe’s innovation capacity by preparing the entrepreneurs and innovators of tomorrow. By fully integrating the three sides of the knowledge triangle ... [more ▼]

EIT Raw Materials has the mission to reinforce Europe’s innovation capacity by preparing the entrepreneurs and innovators of tomorrow. By fully integrating the three sides of the knowledge triangle (education, research and industry), the EIT Raw Materials aims at boosting the innovation process: from idea to product; from lab to market and from student to entrepreneur. A key mission of the EIT Raw Materials is to educate young professionals and specifically engineers and scientists by breaking the barriers of classical disciplines. The so-called T-shaped professional will have a strong entrepreneurial mindset and combine an in depth knowledge of his own discipline with a sound understanding of the challenges appearing along the whole raw materials value chain, such as exploration, extraction and processing of primary resources, recycling of secondary resources and substitution of critical and toxic materials. It is essential that these T-shaped professionals understand their role within the value chain as actors of a more circular economy. Every educational activity organized under the umbrella of the EIT Raw Materials (RM) Academy will therefore make sure to involve all stakeholders of the raw materials value chain and to contribute to raising awareness with respect to the societal function of raw materials and the related supply and availability challenges. To achieve these missions and create a long lasting impact, the RM Academy aims to innovate in terms of teaching, which includes: • The promotion of problem-based learning, self organisation and learning by doing. • The offer of an open learning environment and a series of online courses. • Enabling a high degree of mobility of students and professionals. • Facilitating access to experimental platforms and pilot plants for hands-on training • Adopting a strong multidisciplinary approach (e.g. joint courses across sectors) • Thinking beyond boundaries and systematically exploring and generating new ideas • Transforming innovations into feasible business solutions • Joint curriculum development Critical reflection, peer review processes as well as assessments and collegial discussions under the roof of the EIT Raw Material Academy will be used for continuing quality development of the programs. [less ▲]

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See detailElectromagnetic Investigation of the Pb-Zn deposit of Lontzen, Belgium
Evrard, Maxime ULg; Pirard, Eric ULg; Nguyen, Frédéric ULg

in First International Conference: MINING IN EUROPE, ABTSRACT volume (2016, May)

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See detailLa quadrature de l'économie circulaire
Pirard, Eric ULg

Scientific conference (2016, February 25)

La quadrature du cercle économique est une source d’inspiration et d’innovation pour tous les ingénieurs au Nord comme au Sud. Essayer de la résoudre, c’est contribuer sans conteste à une utilisation plus ... [more ▼]

La quadrature du cercle économique est une source d’inspiration et d’innovation pour tous les ingénieurs au Nord comme au Sud. Essayer de la résoudre, c’est contribuer sans conteste à une utilisation plus efficiente des ressources de notre planète. Mais pour cela, il est indispensable de bien comprendre l’ensemble de la chaîne de valeurs de la matière et d’éviter les leurres et les slogans simplistes comme « zero waste » ou « closing the loop » [less ▲]

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See detailThe materials lifecycle : A steering wheel for Europe's Raw Materials Academy.
Pirard, Eric ULg; Greberg, Jenny

in TMS 2016 Supplemental Proceedings (2016, February)

EIT Raw Materials is a major European initiative supported by more than 120 core and associate partners from industry, research and academia. Among the core missions of this network is the establishment ... [more ▼]

EIT Raw Materials is a major European initiative supported by more than 120 core and associate partners from industry, research and academia. Among the core missions of this network is the establishment of a Raw Materials RM Academy to educate T-shaped professionals that will contribute to the development of a sustainable and resource efficient Europe. Every T-shaped professional should combine an in depth knowledge of his own discipline with a sound understanding of the challenges of the full raw materials value chain and with a mindset for innovation and entrepreneurship. The main objective of the RM Academy is to connect all T-shaped professionals to help create the circular economy steering wheel. Therefore, the RM Academy has the following missions: - Label and support educational programs. - Promote a permanent offer of cross-disciplinary programmes, workshops and courses. - Train T-shaped professionals into T-shaped entrepreneurs. - Promote lifelong learning initiatives. - Stimulate wider society learning initiatives aiming at raising social and political awareness. - Closely collaborate with industry - Enable a high degree of mobility of students and professionals [less ▲]

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See detailDesign and calibration of a two-camera (VNIR and SWIR) hyperspectral acquisition system for the characterization of metallic alloys from the recycling industry
Barnabé, Pierre ULg; Dislaire, Godefroid ULg; Leroy, Sophie ULg et al

in Journal of Electronic Imaging (2015), 24(6),

The conception of a prototype combining two hyperspectral cameras, one ranging from visible to near-infrared and the other covering short-wave infrared, is presented. The prototype aims at the ... [more ▼]

The conception of a prototype combining two hyperspectral cameras, one ranging from visible to near-infrared and the other covering short-wave infrared, is presented. The prototype aims at the characterization of millimeter-sized metallic alloys particles, originating from end-of-life vehicles and waste electrical and electronic equipment recycling. This paper is meant to serve as a support for a similar project by presenting difficulties encountered and available solutions. The calibration steps necessary to obtain quality reflectance data are also described. Classification results obtained on 100 metallic fragments dataset are finally presented. [less ▲]

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See detailL'odyssée des métaux : de la mine au GSM
Pirard, Eric ULg

Scientific conference (2015, September 21)

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See detailCritical metals in sphalerites from Belgian MVT deposits
Goffin, Vincent; Evrard, Maxime ULg; Pirard, Eric ULg

in André-Mayer, Anne-Sylvie; Cathelineau, Michel; Muchez, Philippe (Eds.) et al Proceedings of the 13th SGA Biennial Meeting (2015, August)

Belgium hosts a series of well documented low temperature, carbonate hosted, lead-zinc veins and lenses clearly categorized as MVT deposits. This paper revisits the distribution of trace elements in ... [more ▼]

Belgium hosts a series of well documented low temperature, carbonate hosted, lead-zinc veins and lenses clearly categorized as MVT deposits. This paper revisits the distribution of trace elements in sphalerites from Belgian deposits with a special focus on Ge, Ga and In. By comparing with a database of worldwide deposits, this paper shows that Belgian sphalerites do not display a classical substitution pattern involving Cu+. Instead, multivariate analysis points towards similarities with the Tres Marias deposit in Mexico, although the explanation of coupled substitution with Fe++ does not seem to apply in the present case. From the limited set of sphalerites analysed in this paper, the following rithmetic means are obtained: m(Ge) = 302 ppm, m(Ga) = 2.2 ppm and m(In) < 0.06 ppm. These average values should not hide the fact that a wide variability does exist from one deposit to the other and within zoned colloform sphalerites of the same deposit. Further nd systematic work is required to better evaluate the resource and understand the mechanisms responsible for Ge incorporation into sphalerite. [less ▲]

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See detailGeophysical Investigation of the Pb-Zn deposit of Plombières, Belgium
Evrard, Maxime ULg; Pirard, Eric ULg; Nguyen, Frédéric ULg

in André-mayer, anne-Sylvie; Cathelineau, Michel; Muchez, Philippe (Eds.) et al Mineral resources in a sustainable worl, proceeding, volume 5 (2015, August)

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See detailAdvanced characterisation to investigate the effect of raw material properties on the kinetics of iron ores granulation
Jaimes Contreras, Rafael Antonio; van Loo, Frédéric; Douce, Jean-François et al

Speech/Talk (2015)

The objective of this paper is to study the effect of raw material properties on the kinetics of iron ore granulation considering in particular the layering mechanisms in wet granulation for different ... [more ▼]

The objective of this paper is to study the effect of raw material properties on the kinetics of iron ore granulation considering in particular the layering mechanisms in wet granulation for different iron ore types. For that purpose, the granulation behaviour of single iron ore binary mixtures and more complex mixtures (iron ores and return fines) has been studied at laboratory scale using pilot drums. A particular interest is paid to the influence of morphology and wettability of iron ores. [less ▲]

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See detailThe limits of sustainable metal resources availability
Pirard, Eric ULg

Conference (2015, May 11)

The sustainable availability of raw materials used in manufacturing advanced products is a question that consumers will raise more and more in the future. In order to answer this legitimate request, it is ... [more ▼]

The sustainable availability of raw materials used in manufacturing advanced products is a question that consumers will raise more and more in the future. In order to answer this legitimate request, it is mandatory to define characterization factors capable of taking into account the geological scarcity of an element and also the social and environmental impact of its exploitation and beneficiation. But the specificities of metals also raise the question of their availability from recycling of end-of-life products. It makes no doubt that many products have a dispersive action because of their very low metal contents or because of the complex form under which the metal has been incorporated. The metal availability from recycling will need recycling indices to be developed and specific actions to be taken to fight against improper applications causing harmful resource degradation for the future generations [less ▲]

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See detailRessources Métalliques et Economie Circulaire
Pirard, Eric ULg

Conference given outside the academic context (2015)

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See detailOn the Shape Simulation of Aggregate and Cement Particles in a DEM System
He, Huan; Stroeven, Piet; Pirard, Eric ULg et al

in Advances in Materials Science and Engineering (2015)

Aggregate occupies at least three-quarters of the volume of concrete, so its impact on concrete’s properties is significant. Both size and shape of aggregate influence workability, mechanical properties ... [more ▼]

Aggregate occupies at least three-quarters of the volume of concrete, so its impact on concrete’s properties is significant. Both size and shape of aggregate influence workability, mechanical properties, and durability of concrete. On the other hand, the shape of cement particles plays also an important role in the hydration process due to surface dissolution in the hardening process. Additionally, grain dispersion, shape, and size govern the pore percolation process that is of crucial importance for concrete durability. Discrete element modeling (DEM) is commonly employed for simulation of concrete structure. To be able to do so, the assessed grain shape should be implemented. The approaches for aggregate and cement structure simulation by a concurrent algorithm-based DEM system are discussed in this paper. Both aggregate and cement grains were experimentally analyzed by X-ray tomography method recently. The results provide a real experimental database, for example, surface area versus volume distribution, for simulation of particles in concrete technology. Optimum solutions are obtained by different simplified shapes proposed for aggregate and cement, respectively. In this way, more reliable concepts for aggregate structure and fresh cement paste can be simulated by a DEM system. [less ▲]

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See detailLa disponibilité durable des matières premières minérales
Pirard, Eric ULg

Conference (2014, November 24)

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See detailRouvrir une mine à Plombières. Une utopie ?
Pirard, Eric ULg

in Simons, Marc (Ed.) Plomb'hier à bonnes mines. (2014)

Plombières, Ferrières, Goldgrübe,… autant de noms qui dans nos régions renvoient aux sept métaux connus depuis l’Antiquité. Sept métaux comme les sept planètes ou les sept jours de la semaine à l’image ... [more ▼]

Plombières, Ferrières, Goldgrübe,… autant de noms qui dans nos régions renvoient aux sept métaux connus depuis l’Antiquité. Sept métaux comme les sept planètes ou les sept jours de la semaine à l’image d’un monde parfait. Pourtant, si pendant des siècles, ces métaux ont suffi à satisfaire nos besoins technologiques, il n’en va plus de même aujourd’hui : l’éolienne a remplacé le moulin à vent et l’ordinateur s’est substitué à la craie ! Avec la production de 900.000 t de zinc et 100.000 t de plomb, les gisements de Moresnet ont eu une importance historique majeure dans le développement d’une véritable industrie du zinc. Ils ont aussi joué un rôle important dans la découverte d’éléments rares comme le gallium. Notre société ne peut plus se passer de ces métaux, jamais leur exploitation n’a été aussi intense et ce malgré l’existence et le développement constant du recyclage. Les mines de nos régions ont fermé il y a près d’un siècle, faute de technologies adéquates pour localiser de nouvelles ressources ou pour réaliser une exhaure efficace. Très vite, il s’est avéré plus simple et plus rentable de faire venir le minerai de régions lointaines comme l’Afrique, l’Australie et aujourd’hui la Chine. Pourtant, rien ne dit qu’il ne reste pas des quantités significatives de zinc et de plomb dans notre sous-sol. Pour des raisons stratégiques évidentes, l’Europe souhaite que nous réévaluions nos ressources et nos réserves avec les moyens les plus modernes. Une mise en exploitation n’est pas pour autant à l’ordre du jour. Elle ne pourra de toute façon résulter que de la volonté concertée de tous les acteurs d’une région unis autour d’un même objectif. [less ▲]

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