Results 41 to 50 of about 381 (161)
Design of separation system of coal and gangue based on X-ray and machine visio
Gong-kuang zidonghua, 2017 In view of problems of low efficiency, environmental pollution and high cost existed in traditional coal and gangue separation method, a separation system of coal and gangue based on X-ray and machine vision was designed.
YANG Huigang, QIAO Zhimin
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Energy Science &Engineering, EarlyView.论文陈述 Paper Statement 本研究揭示了不同宏观煤岩类型的差异化控气机制:半亮煤是主要“储气核心,” 光亮煤为关键“渗流通道,” 暗淡煤则是“初期高产贡献者”。这为深层煤层气甜点优选与定制开发提供了关键理论依据。 This study reveals the differentiated gas‐controlling mechanisms of different macroscopic coal lithotypes: semibright coal acts as the primary “gas storage core,” bright coal serves as the critical “seepage channel,” and dull coal functions
Heng Li +6 more
wiley +1 more source
Moss Biocrusts Regulate Heavy Metal Speciation and Mobility in Coal Mine Soils
Land Degradation &Development, EarlyView.ABSTRACT On a global scale, coal mining activities often lead to heavy metal(loid) contamination in soils of mine dump sites, posing serious ecological risks. As ecosystem “engineers,” biological soil crusts (biocrusts)—especially moss crust—have shown great potential in remediating heavy metal‐polluted soils, but their roles remain underexplored.
Song Guang +4 more
wiley +1 more source
An improved tiny YOLO v3 rapid recognition model for coal-gangue
Gong-kuang zidonghua, 2023 The traditional coal gangue sorting methods have low efficiency, significant safety hazards, and limited application scope. The existing machine vision-based coal gangue image recognition methods are difficult to balance model recognition speed and ...
ZHENG Daoneng
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Land Degradation &Development, EarlyView.ABSTRACT Coal mining severely degrades soil profiles and ecosystem functions, highlighting the need for effective reclamation. Reconstructing soil profiles with industrial solid wastes offers a promising waste‐to‐resource approach, but the ecological effects of different engineered key‐layer materials remain unclear.
Yi‐Jie Quan +13 more
wiley +1 more source
On the academic ideology of “Sorting the gangue is sorting the images”
Meitan kexue jishuCoal gangue sorting is the most basic, effective, and important technical measure to improve coal quality. Improving the accuracy and efficiency of coal gangue sorting is a serious challenge faced by coal gangue sorting.
Hongwei MA +7 more
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steel research international, EarlyView.This study investigates the reduction of pure iron oxides and industrial iron ore using hydrogen gas as a reducing agent. Additionally, to determine whether the reduction process can be accelerated, electromagnetic fields of 50 Hz and 25 kHz were applied.
Mykyta Levchenko +5 more
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Barriers to Steel Decarbonization
steel research international, EarlyView.Main identified barriers to steel decarbonization Carbon dioxide (CO2) emissions are a leading contributor to global climate change, necessitating urgent mitigation strategies. While various metrics—such as total national emissions, per‐capita output, and historical contributions—define responsibility, determining accountability remains complex ...
Pasquale Cavaliere
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Coal Gangue Target Detection Based on Improved YOLOv5s
Applied Sciences, 2023 Coal gangue sorting is a necessary process in coal mine production, and removing gangue is the basis for the coal production of clean energy; it is also an important approach to reduce the cost of washing, improve the grade of finished coal and increase ...
Shuxia Wang +4 more
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steel research international, EarlyView.Commercial iron ore sinter is reduced isothermally under operation‐derived radial blast furnace gas atmospheres with and without 20 kg H2/tHM injection. Hydrogen improves reduction at 900–1100 °C, whereas at 700 °C the high H2O content limits the wüstite‐to‐iron driving force.
Ahmed Abdelrahim +5 more
wiley +1 more source