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Topic Review
Unmanned Aerial Vehicles in Mine Closure/Rehabilitation Projects
Unmanned aerial vehicles (UAVs) are being used more frequently nowadays because of advancements in sensor and control technologies. They can use a range of single-band, multispectral, and hyperspectral sensors, including those that function in visible, infrared, and microwave spectrums. Their application in heritage and archaeological site mapping, transportation, civil engineering, agriculture, landscape mapping, wildlife conservation, infrastructure inspection, and search and rescue have been investigated in several studies.
  • 95
  • 06 Feb 2024
Topic Review
Gel Foam Extinguishing Agent in Coal Mines
Coal is a fossil fuel with great economic potential, but meanwhile, it is threatened by coal spontaneous combustion during coal production. Gel foam extinguishing agent (gel foam) has promising applications in the prevention and management of mine coal spontaneous combustion.
  • 291
  • 02 Jan 2024
Topic Review
Mitigating Risks in Coal Mining
Insufficient stability of the top plate at the corner of an easily combustible coal seam comprehensive mining face may lead to a natural fire within the goaf. While corner sealing is crucial for minimizing air leakage, current sealing methods struggle to effectively prevent such leakage. Additionally, the distribution characteristics of the oxidation zone in the goaf after sealing are unclear, making it difficult to control the extent of the oxidation zone.
  • 105
  • 22 Dec 2023
Topic Review
High-Purity Quartz Processing Technology
Quartz deposits are widely dispersed in nature, but the presence of ore bodies capable of yielding high-purity quartz is exceedingly rare. As a result, the effective purification and processing of high-purity quartz from natural siliceous materials has emerged as a prominent area of research within the non-metallic mineral processing field.
  • 522
  • 12 Dec 2023
Topic Review
Quantum Chemistry in the Study of Flotation Reagents
Flotation reagents are significant for modifying the interfacial characteristics of mineral grains to achieve the effective separation of minerals. Since the 1960s, when quantum chemistry was first introduced into the study of flotation reagents, many achievements have been made, although some controversial topics remain.
  • 108
  • 06 Dec 2023
Topic Review
Digital Twin Technology in Data Center Simulations
Mining activities often deem mine sites as temporary, leading to their eventual reclamation, rehabilitation, or abandonment. The abandoned mine sites can be reimagined as strategic assets, thus providing economic benefits while adhering to critical data center infrastructure standards.
  • 99
  • 05 Dec 2023
Topic Review
Soft Computing Application in Mineral Processing
The mining sector has increasingly embraced simulation and modelling techniques for decision-making processes. This adoption has facilitated enhanced process control and optimisation, enabling access to valuable data such as precise granulometry measurements, improved recovery rates, and the ability to forecast outcomes. Soft computing techniques, such as artificial neural networks and fuzzy algorithms, have emerged as viable alternatives to traditional statistical approaches, where the complex and non-linear nature of the mineral processing stages requires careful selection.
  • 152
  • 04 Dec 2023
Topic Review
Impact of Mining on Withdrawal Roadway
The withdrawal roadway is a specialized mining roadway arranged at the stop-mining line of a coal mining face. It serves as a direct connection to the gob after the completion of mining operations, providing crucial spatial support for withdrawing the mining equipment. The roof control of the withdrawal roadway is an important guarantee for the safe and rapid retreat of the mining equipment from the working face. However, during the final mining period, the withdrawal roadway will be connected to the coal mining face, which will cause severe deformation, fracture, and instability of the surrounding rock in this roadway due to strong mining influence. This poses a formidable challenge for roof control and has been a persistent issue affecting mine production.
  • 71
  • 30 Nov 2023
Topic Review
Estimation of Muckpile Fragmentation Methods
Blasting is a very effective method of crushing various types of rocks with different hardness in mining, as it can crush a large amount of rocks at once and at a low cost. In addition, muckpile fragmentation is represented by particle size distribution, which is an important parameter for optimizing blasting plans. Methods for measuring the particle size distribution of muckpile fragmentation include sieving and using laser scanners, and methods using 2D images.
  • 118
  • 13 Nov 2023
Topic Review
Gravity Concentration Techniques in Urban Mining Applications
Urban mining has emerged as a concept that goes beyond conventional recycling, as it aims to tackle both the challenges of solid waste generation and management, as well as the scarcity of primary resources. Gravity concentration has gained increasing attention as a promising method for addressing crucial challenges in urban mining applications. Gravity concentration has a long history, dating back to ancient times. During this time, numerous methods have been developed, and for each method, various equipment has been manufactured and commercialized. Therefore, categorizing gravity concentration techniques is not an easy task, and it ultimately depends on the criteria that one relies upon. Such criteria may include whether the operation is dry or wet, the capacity of the equipment, the typical efficiency (the efficiency of gravity concentration equipment can be evaluated using the partition or Tromp curve method. In this, the separation is assessed by examining the fraction of material in each density fraction that ends up in the product, and how this relates to the original fraction present in the feed. More details can be found in mineral processing textbooks), the process target (yield or content), the costs involved, and others. Of these criteria, the operating size range is the most critical factor that should be considered when selecting appropriate gravity concentration techniques for a given application.
  • 371
  • 08 Nov 2023
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