Aluminum Recycling - Challenges and Opportunities

2009 ◽  
Vol 83-86 ◽  
pp. 571-578 ◽  
Author(s):  
Musbah Mahfoud ◽  
Daryoush Emadi
Keyword(s):  
Aluminum Industry ◽  
Development Work ◽  
Automotive Applications ◽  
Aluminum Recycling ◽  
The Future ◽  
Challenges And Opportunities ◽  
Increasing Demand ◽  
And Performance ◽  
The Aluminum Industry ◽  
Future Growth

Aluminum has experienced significant growth in several sectors over the last decade as a result of its properties and performance attributes. Aluminum is being recognized by different sectors such as automotive, construction, aerospace, etc. as a one of the best candidate material for various applications. Increasing demand for aluminum-based products and further globalization of the aluminum industry have contributed significantly to the higher consumption of aluminum scrap for re-production of aluminum alloys. In automotive applications, for example, the opportunities for continued growth in powertrain and suspension applications plus lightweighting of body structures offer the potential for considerable further growth. Today, a large amount of the aluminum going into new products is coming from recycled products. This represents a growing "energy bank" of aluminum that will become available for recycling at the end of vehicles' lives, and thus recycling is becoming a major issue, and it is essential to tackle this problem before it is too late. The future growth offers opportunity for new recycling technologies and practices to maximize scrap quality, improve efficiency and reduce cost. The present paper highlights some of the current development work in recycling, the challenges facing the implementation of recycling technologies and the future prospective of the idea.

The temporal politics of anthropogenic earthquakes: Acceleration, anticipation, and energy extraction in Iceland

2019 ◽  
Vol 29 (3) ◽  
pp. 704-726
Author(s):  
James Maguire
Keyword(s):  
Renewable Energy ◽  
Geothermal Energy ◽  
Small Town ◽  
Aluminum Industry ◽  
Energy Extraction ◽  
Volcanic Zone ◽  
South West ◽  
Energy Needs ◽  
The Future ◽  
The Aluminum Industry

This paper is an ethnographic exploration of the volcanic landscapes of Iceland, where the extraction of geothermal energy for the production of aluminum is triggering anthropogenic earthquakes. As the aluminum industry seeks to decarbonize their industrial infrastructure, they are increasingly looking to renewable energy havens, such as Iceland, to supply their expansive energy needs. While this paper is partly about understanding the forms of politics at stake in decarbonizing modernity’s infrastructures, it is more specifically concerned with the temporal politics of anthropogenic earthquakes in the Hengill volcanic zone in the south west of the country. The paper takes up the perspective of geologists tasked with analyzing the emergence of these new earthquake forms, as well as locals from a small town in the vicinity who are learning to live with them. While focusing on the conflict that has ensued in the wake of earthquake production, the article pays particular attention to the importance of acceleration––both economic and geologic––in their making. This leads to an analysis of how alternate temporal renderings of anthropogenic earthquakes invoke competing claims about the future. Anticipating the future, the paper argues, is a form of temporal politics through which the various actors either legitimize, or protest against, these volcanic interventions.

Designing Aluminium Alloys for a Recycling Friendly World

2006 ◽  
Vol 519-521 ◽  
pp. 1239-1244 ◽  
Author(s):  
Subodh K. Das
Keyword(s):  
United States ◽  
Aluminum Alloys ◽  
Aluminium Alloys ◽  
Aluminum Industry ◽  
The United States ◽  
Economic Benefits ◽  
Alloy Design ◽  
Aluminum Recycling ◽  
Design For Recycling ◽  
The Aluminum Industry

Recycling aluminum alloys has been shown to provide major economic benefits, as a result it is appropriate for the aluminum industry and the United States as a whole to identify, develop, and implement all technologies that will optimize the benefits of recycling. This paper will focus primarily alloy design for optimizing the reuse of recycled metal; this is both the most forward looking as we move toward a more recycling friendly world and the most overlooked for its potential in maximizing the recycle loop. Some specific approaches to alloy design for recycling are put forth, and some specific compositions for evaluation are proposed. Options for moving forward to further capitalize of the advantages of aluminum recycling are also addressed.

On the effect of the periodicity of diagnostic measurements on improving the reliability of high-voltage transformers

2019 ◽  
Vol 12 (1) ◽  
pp. 18-21
Author(s):  
V. A. Tikhonov
Keyword(s):  
Service Life ◽  
High Voltage ◽  
Chromatographic Analysis ◽  
Aluminum Industry ◽  
Early Stage ◽  
Diagnostic Methods ◽  
Transformer Oil ◽  
Operating Voltage ◽  
Dissolved Gases ◽  
The Aluminum Industry

The influence of the periodicity of diagnostic measurements on the operational state of high-voltage transformers is considered. Examples of defects of switching devices of converter transformers and methods for their detection are given. The rationale for the importance of recognition of defects at an early stage of their occurrence is given. The influence of the multiplicity of overvoltages on the service life of converter transformers in the aluminum industry is investigated. Based on the analysis of the service life of converter transformers of one of the powerful aluminum plants, where 83% of converter transformers have exhausted their standard service life, it is shown that in 40% of cases it would be possible to avoid their failures, with timely detection and elimination of emerging defects. Examples of defects of OLR (on-load regulators) of converter transformers and methods for their detection are given. The importance of recognition of defects at an early stage of their occurrence is substantiated. A method for chromatographic analysis of dissolved gases in transformer oil has been developed for the qualitative determination of defects and ways to eliminate them. Examples of diagnostics of converter transformers at operating voltage and working load are given, providing the best quality operational characteristics of converter transformers. The periodicity of diagnostic measurements and the reduction of defects and failures has been substantiated. The question of diagnosing the state of the converter transformer TDNP-40000/10 at an enterprise of the aluminum industry is investigated. Currently, diagnostic methods are being developed based on chromatographic analysis of dissolved gases in transformer oil. The presented method of evaluating the operating parameters of transformers allows for the safe operation of high-voltage transformers and enables to increase the reliability of the power supply scheme of aluminum industry plants.

scholarly journals The continuum of simulator-based maritime training and education

2021 ◽  
Author(s):  
Tae-eun Kim ◽  
Amit Sharma ◽  
Morten Bustgaard ◽  
William C. Gyldensten ◽  
Ole Kristian Nymoen ◽  
...  
Keyword(s):  
Digital Technologies ◽  
Competency Development ◽  
Training And Education ◽  
Maritime Education ◽  
Training Interventions ◽  
The Future ◽  
Challenges And Opportunities ◽  
Maritime Operations ◽  
Maritime Education And Training

AbstractThe COVID-19 pandemic has brought unprecedented challenges to the maritime supply chain and called for accelerated adoption of digital technologies in various aspects of maritime operations, including the area of maritime education and training (MET). This paper aims to discuss the current maritime simulator-based training and educational practices that forms an integral part in seafarer training and competency development. The study provides a review of the existing simulators in use in MET, and discusses upon the technological and pedagogical advancement of maritime simulator-based training interventions with predictions regarding the future MET practices with use of virtual reality and cloud-based simulators. This study—by focusing on ship’s bridge operations—highlights the characteristics of various types of simulators and also discusses the role of instructors, challenges, and opportunities involving future simulator-based MET due to accelerated adoption of digital technologies and the need to comply with pandemic-related restrictions for MET institutes. The analysis generated in the paper may contribute to the ongoing discussion regarding the future of simulator-based MET and the fulfillment of the UN Sustainable Development Goal (SDG) 4 in the maritime sector.

scholarly journals Predicting the future growth depending on GIS and IDRISI program, city of Najaf-Iraq

2020 ◽  
Vol 881 ◽  
pp. 012031
Author(s):  
Amna Hussain Sabree Ali ◽  
A. Kh Amany ◽  
Mustafa.Abdul. Jalil
Keyword(s):  
The Future ◽  
Future Growth

scholarly journals Compaction of Cohesive Granular Material: Application to Carbon Paste

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 704
Author(s):  
Zahraa Kansoun ◽  
Hicham Chaouki ◽  
Donald Picard ◽  
Julien Lauzon-Gauthier ◽  
Houshang Alamdari ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Mechanical Behavior ◽  
Aluminum Industry ◽  
Frequency Effect ◽  
Strain Rates ◽  
Cyclic Tests ◽  
Carbon Paste ◽  
Rheological Models ◽  
Softening Behavior ◽  
The Aluminum Industry

Carbon-like materials such as the anode and the ramming paste play a crucial role in the efficiency of the Hall–Héroult process. The mechanical behavior of these materials during forming processes is complex and still ill-understood. This work aimed to investigate experimentally the mechanical behavior of a carbon paste used in the aluminum industry under different loading conditions. For this purpose, experiments consisting of (1) relaxation tests at different compaction levels, (2) quasi-static cyclic tests at several amplitudes, (3) monotonic compaction tests at varied strain rates, and (4) vibrocompaction tests at different frequencies were carried out. The obtained results highlight some fundamental aspects of the carbon paste behavior such as the strain rate’s effect on the paste compressibility, the hardening-softening behavior under cyclic loadings, the effect of cycling amplitude on the stress state and the paste densification, and the frequency effect on the vibrocompaction process. These results pave the way for the development of reliable rheological models for the modeling and the numerical simulation of carbon pastes forming processes.

The Future of Engineering Education: Current Challenges and Opportunities

2021 ◽  
Author(s):  
Claudio R. Brito ◽  
Melany M. Ciampi ◽  
Maria Feldgen ◽  
Osvaldo Clua ◽  
Henrique D. Santos ◽  
...  
Keyword(s):  
Engineering Education ◽  
The Future ◽  
Challenges And Opportunities
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