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Eng, Volume 3, Issue 2

2022 June - 7 articles

Cover Story: Rare-earth elements (REE) are highly valued for their unique magnetic, optical, and catalytic properties, making them essential for a number of high-technology industries. With the depletion of high-grade ores, unconventional resources, including mining tailings, have been targeted for value extraction. Some ore deposits have been identified to be rich in copper, gold, silver, and other metals with a subeconomic REE grade. The extraction of primary commodities from such ores results in the accumulation of REE values in the tailings stream. This paper summarizes the findings from studies carried out to ascertain the technical feasibility of recovering REE minerals from tailings using froth flotation as well as magnetic and gravity preconcentration methods. View this paper
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Articles (7)

  • Technical Report
  • Open Access
10 Citations
3,447 Views
25 Pages

Quantifying Small-Scale Hyporheic Streamlines and Resident Time under Gravel-Sand Streambed Using a Coupled HEC-RAS and MIN3P Model

  • Md Abdullah Al Mehedi,
  • Munshi Md. Shafwat Yazdan,
  • Md Tanvir Ahad,
  • Wisdom Akatu,
  • Raaghul Kumar and
  • Ashiqur Rahman

13 June 2022

Distribution of the water flow path and residence time (HRT) in the hyporheic zone is a pivotal aspect in anatomizing the transport of environmental contaminants and the metabolic rates at the groundwater and surface water interface in fluvial habita...

  • Review
  • Open Access
22 Citations
7,477 Views
17 Pages

Recovery of Rare Earth Elements Minerals from Iron-Oxide-Silicate-Rich Tailings: Research Review

  • George Blankson Abaka-Wood,
  • Kathy Ehrig,
  • Jonas Addai-Mensah and
  • William Skinner

6 May 2022

The rapid depletion of high-grade rare earth elements (REE) resources implies that future supplies may be augmented with low-grade ores, tailings, and other unconventional resources to meet cut-off grades and, subsequently, supply demands. This paper...

  • Article
  • Open Access
13 Citations
5,934 Views
18 Pages

Analysis of Grid Disturbances Caused by Massive Integration of Utility Level Solar Power Systems

  • Esteban A. Soto,
  • Lisa B. Bosman,
  • Ebisa Wollega and
  • Walter D. Leon-Salas

29 April 2022

Solar generation has increased rapidly worldwide in recent years and it is projected to continue to grow exponentially. A problem exists in that the increase in solar energy generation will increase the probability of grid disturbances. This study fo...

  • Article
  • Open Access
2,987 Views
12 Pages

Influence of Internal Rubber Damper on Cable External Viscous Damper Effectiveness

  • Changzhao Li,
  • Jiayi Peng,
  • Mengying Zhang,
  • Chao Yang,
  • Yu Cheng and
  • Yufeng Zhang

2 April 2022

In practice, the internal rubber dampers are widely installed inside the cable guide pipe between the external viscous damper and the cable anchorage. In order to study the effect of the internal damper on the performance of the external viscous damp...

  • Article
  • Open Access
15 Citations
4,736 Views
17 Pages

28 March 2022

The superior access to renewable sources in modern power systems increases the fluctuations in system voltage and power. Additionally, the central dilemmas in using renewable energy sources (RESs) are the intermittent nature of and dependence on wind...

  • Article
  • Open Access
2,780 Views
11 Pages

25 March 2022

The development of an effective hydraulic unit (HU) diagnostic system, which recognizes critical fault at an early stage of their development, is a relevant and practically important objective for many hydroelectric power plants (HPP). The main trend...

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Eng - ISSN 2673-4117