scholarly journals Simulation to Recover Niobium and Tantalum from the Tin Slags of the Old Penouta Mine: A Case Study

Minerals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1123
Author(s):  
Ricardo Magdalena ◽  
Alicia Valero ◽  
Guiomar Calvo ◽  
Francisco J. Alguacil ◽  
Félix Antonio López Gómez
Keyword(s):  
Energy Consumption ◽  
Mine Tailings ◽  
Niobium Oxide ◽  
Tantalum Oxide ◽  
Hydrometallurgical Process ◽  
Product Yields ◽  
The World ◽  
Supply Risks ◽  
Do So

Demand for niobium and tantalum is increasing exponentially as these are essential ingredients for the manufacture of, among others, capacitors in technological devices and ferroniobium. Mine tailings rich in such elements could constitute an important source of Nb and Ta in the future and alleviate potential supply risks. This paper evaluates the possibility of recovering niobium and tantalum from the slags generated during the tin beneficiation process of mine tailings from the old Penouta mine, located in Spain. To do so, a simulation of the processes required to beneficiate and refine both elements is carried out. After carbothermic tin reduction, the slags are sent to a hydrometallurgical process where niobium oxide and tantalum oxide are obtained at the end. Reagents, water, and energy consumption, in addition to emissions, effluents, and product yields, are assessed. Certain factors were identified as critical, and recirculation was encouraged in the model to maximise production and minimise reagents’ use and wastes. With this simulation, considering 3000 production hours per year, the metal output from the tailings of the old mine could cover around 1% and 7.4% of the world annual Nb and Ta demand, respectively.

scholarly journals Simulation to Recover Niobium and Tantalum From the Tin Slags of the Penouta Mine: A Case Study

2021 ◽  
Author(s):  
Ricardo Magdalena ◽  
Alicia Valero ◽  
Guiomar Calvo ◽  
Francisco J. Alguacil ◽  
Félix Antonio López Gómez
Keyword(s):  
Energy Consumption ◽  
Mine Tailings ◽  
Carbothermic Reduction ◽  
Niobium Oxide ◽  
Tantalum Oxide ◽  
Hydrometallurgical Process ◽  
The World ◽  
Supply Risks ◽  
Do So

Demand for niobium and tantalum is increasing exponentially as these are essential ingredients for the manufacture of, among others, capacitors in technological devices and ferroniobium. Mine tailings rich in such elements could constitute an important source of Nb and Ta in the future and so alleviate potential supply risks. This paper evaluates the possibility of recovering niobium and tantalum from the slags generated during the tin beneficiation process of mine tailings from the old Penouta mine, located in Spain. To do so, a simulation of the processes that would be required to beneficiate and refine both elements is carried out. After tin carbothermic reduction, the slags are sent to a hydrometallurgical process where at the end niobium oxide and tantalum oxide are obtained. Reagents, water and energy consumption, in addition to emissions, effluents and product yields are assessed. Certain factors were identified as critical, and recirculation was encouraged in the model to maximize production and minimize reagents use and wastes. With this simulation, considering 3000 production hours per year, the metal output from the tailings of the old mine could cover around 1% and 7.4% of the world annual Nb and Ta demand, respectively.

A Methodology for Building Knowledge Memory Within the Handicraft Sector

2019 ◽  
Vol 15 (3) ◽  
pp. 45-65 ◽  
Author(s):  
Imane El Amrani ◽  
Abdelmjid Saka ◽  
Nada Matta ◽  
Taoufik Ouazzani Chahdi
Keyword(s):  
Knowledge Engineering ◽  
Multimedia System ◽  
Methodological Framework ◽  
Know How ◽  
The World ◽  
Knowledge Preservation ◽  
Knowledge Memory ◽  
Interactive Multimedia System ◽  
Do So

The Moroccan handicraft is threatened by the loss of its knowledge and several authorities are calling to safeguard this cultural heritage through a detailed transcription and development of an interactive multimedia system. In response to this call, this article represents a first step in addressing this need. It provided a basic methodology for building a craft memory which will be considered as a benchmark for handicraft knowledge preservation. The study focuses on identifying the most critical and vulnerable know-how and modelling the knowledge which needs to be retained. To do so, a methodological framework is proposed and validated through a case study on the Moroccan zellige craft. The methods used here are derived from the world of Knowledge Management (KM) and Knowledge Engineering (KE); in particular, MASK method, GAMETH and M3C. Nevertheless, their systematic application is not perfectly adapted, it needs to be in accordance to the craft characteristics and the artisan's profile which is the key point of the current study.

scholarly journals Ecodesign from High School to Bachelor Level: A French Case Study

2019 ◽  
Vol 1 (1) ◽  
pp. 3261-3270 ◽  
Author(s):  
Catherine Perpignan ◽  
Vincent Robin ◽  
Yacine Baouch ◽  
Benoit Eynard
Keyword(s):  
High School ◽  
Sustainable Development ◽  
Energy Consumption ◽  
Consumption Patterns ◽  
French Case ◽  
Global Understanding ◽  
The Impact ◽  
Over Time ◽  
Do So

AbstractNowadays, our society needs that an awareness be made about our impact on the planet. Many more or less alarmist reports tell us that there is a need to change our consumption patterns, production and energy consumption … One of the main axes to achieve these goals is education. Thus integrating sustainable development into the skills of future engineers is an essential challenge but above all a necessity to modify and reduce our impact on the environment and to allow a global understanding of the complexity of our society. For this, companies must also evolve. Some will do so in a strategy of greening their image, others will have to comply with the various regulations of their sector of activity and a final category of these companies will use this opportunity as a vector of innovation. Each at their level will make a contribution, the integration over time of new sustainability skills within their staff will expand their action. In this article, we will focus our study on the integration of ecodesign in the industry and the impact that this generates in terms of skills to acquire, values to evolve and knowledge to master.

The Role of Form Compositions in Energy Consumption of High-Rise Buildings (Case Study: Iran, Tehran)

2012 ◽  
Vol 488-489 ◽  
pp. 175-181 ◽  
Author(s):  
Mohammadjavad Mahdavinejad ◽  
Mohammadhossein Ghasempourabadi ◽  
Hojat Ghaedi
Keyword(s):  
Energy Consumption ◽  
Energy Loss ◽  
Fossil Fuels ◽  
Minimum Energy ◽  
Photovoltaic Cells ◽  
Heat Gain ◽  
High Rise ◽  
The World

Iran is recognized as one of the largest fossil fuels reserves resources in the world, but it is also suffer from mismanaged consumption. The consequences of this mismanagement have been considered in Iran during recent years and authorities have raised concerns about it. Identification of the optimized orientation and tilt angle for roofs in Tehran- The capital of Iran- in order to achieve the maximum daytime heat gain by photovoltaic cells and minimum energy loss at night in winter is the main purpose of this paper. So this paper makes a comparison in three shape of high-rise building in Tehran and their orientation. The results show that the appropriate direction for gaining more energy in Tehran are north-south and WE-NE direction and the cubic type of building in field of energy consumption is more economically for users

scholarly journals The China-India Challenge: A Comparison Of Causes And Effects Of Global Warming

2010 ◽  
Vol 9 (3) ◽  
Author(s):  
Betty J. Diener ◽  
William P. Frank
Keyword(s):  
Economic Growth ◽  
Global Warming ◽  
Energy Consumption ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Gas Emissions ◽  
China And India ◽  
The World ◽  
The Will ◽  
Do So

It is likely that the future environment of our globe depends on the actions taken by China and India as they develop into two of the three largest economies in the world over the next twenty-five years.  The global warming problem alone will be dominated by the total greenhouse gas emissions from these two countries.  This article summarizes the economic growth of these two countries, the resulting increasing environmental problems, the trends and impacts of increased energy consumption, the trends and impacts of greenhouse gas emissions, and the potential for reducing these impacts, should the two countries have the will to do so.

scholarly journals Why Superman Will Not Save the World: Theorizing the Relationship Between Suffering and DC Comics Superman

2020 ◽  
Vol 2 (3) ◽  
pp. 119-137
Author(s):  
Kwasu Tembo
Keyword(s):  
Sigmund Freud ◽  
Comic Book ◽  
Human Suffering ◽  
Pleasure Principle ◽  
Physical Suffering ◽  
The World ◽  
Pure Altruism ◽  
The Relationship ◽  
Do So

The hypothesis that there is an inextricable link between comic book superheroes and suffering would, to anyone with a cursory knowledge of superhero characters found in DC, Marvel, Image, Wildstorm and other houses, and their histories, ostensibly seem valid. This validity depends on which character one is applying said hypothesis to; the psychological and physical suffering of a Batman being more acceptable as such than that of a Plastic Man, for example. However, using DC Comics character Superman as a case study, this paper explores the inextricable link between Otherness, power, and suffering within the remit of the character's mythos. In order to do so, this paper refers to psychoanalytic concepts elaborated by Sigmund Freud in his text Beyond the Pleasure Principle (1922) as a way of demonstrating that despite the character's conventional appraisal as a positivist humanistic symbol of pure altruism, an insuperable, unimpeachable symbol of selflessness and good morality, there is in fact a fundamental link between Superman's 'tridentity' of selves (Clark Kent/Kal-El/Superman), the character's own suffering, and human suffering on a terrestrial scale, as represented within the numerous realities of the DC Comics Multiverse.

scholarly journals Kasurupan: Spirits Taxonomies and Interpretation in the Practice of Kasenian Réak

Jurai Sembah ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 27-35
Author(s):  
Luigi Monteanni
Keyword(s):  
General Theory ◽  
Musical Performances ◽  
The World ◽  
Do So

Kasenian réak is a regional variant of the Javanese horse dances from Bandung, Indonesia. Commonly known in the archipelago as jaranan, kuda lumping or jathilan, the Javanese horse dances are a group of ceremonial musical performances during which a group of performers, led by a trance master, undergo voluntary possessions on behalf of spirits of the ancestors and other supernatural beings, under the influence of a musical ensemble. In different possession and trance phenomena around the world recognizing the acting spirit is often the key to communication with the supernatural being and treatment of the possessed. Thus, more or less different and precise taxonomies may be developed in order to do so. In réak, the possessed behaviour is interpreted by the trance master and members of the group in order to meet the spirit’s various demands and act accordingly to manage the possession. The purpose of this article is to examine the spirits’ taxonomies at play in réak as a case study. I do this in order to show in which sense analyses of the phenomenon of possession based on classification often fail to grasp the complexity and thus the significance of the experience. The outcome will underline which benefits can be obtained by a an approach that gives more value to a context-based ethnography of the possessed and its peculiarities than to the development of a general theory of possession with comparative purposes.

scholarly journals Why Superman Will Not Save the World: Theorizing the Relationship Between Suffering and DC Comics Superman (Translation into Russian)

Corpus Mundi ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 14-34
Author(s):  
Kwasu Tembo
Keyword(s):  
Sigmund Freud ◽  
Comic Book ◽  
Human Suffering ◽  
Pleasure Principle ◽  
Physical Suffering ◽  
The World ◽  
Pure Altruism ◽  
The Relationship ◽  
Do So

The hypothesis that there is an inextricable link between comic book superheroes and suffering would, to anyone with a cursory knowledge of superhero characters found in DC, Marvel, Image, Wildstorm and other houses, and their histories, ostensibly seem valid. This validity depends on which character one is applying said hypothesis to; the psychological and physical suffering of a Batman being more acceptable as such than that of a Plastic Man, for example. However, using DC Comics character Superman as a case study, this paper explores the inextricable link between Otherness, power, and suffering within the remit of the character's mythos. In order to do so, this paper refers to psychoanalytic concepts elaborated by Sigmund Freud in his text Beyond the Pleasure Principle (1922) as a way of demonstrating that despite the character's conventional appraisal as a positivist humanistic symbol of pure altruism, an insuperable, unimpeachable symbol of selflessness and good morality, there is in fact a fundamental link between Superman's 'tridentity' of selves (Clark Kent/Kal-El/Superman), the character's own suffering, and human suffering on a terrestrial scale, as represented within the numerous realities of the DC Comics Multiverse.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

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