Results 51 to 60 of about 4,764 (197)

Geopolymers as a Sustainable Chemical Platform: From Building Materials to Advanced Functional Applications

open access: yesThe Chemical Record, EarlyView.
Geopolymers are presented as a chemically programmable platform whose properties emerge from activation chemistry, nanoscale disorder, and interfacial design. The review highlights sustainability challenges, the shift toward nanoengineered and hybrid systems, and the rise of halloysite‐based architectures enabling tunable structures across scales for ...
Martina Maria Calvino   +4 more
wiley   +1 more source

3D thermal mapping of smoldering coal gangue pile fires using airborne thermal infrared data

open access: yesCase Studies in Thermal Engineering, 2023
Smoldering coal gangue pile fires pollute the air, soil and groundwater severely. Physical and chemical explosions between water and fiery coal gangue may occur, resulting in a large number of casualties.
Zhenlu Shao   +5 more
doaj   +1 more source

Coal gangue image recognition model based on CSPNet-YOLOv7 target detection algorithm [PDF]

open access: yes
The gangue recognition technology is one of the key technologies in the intelligent construction of mines. To address the problem of low accuracy of the gangue recognition model caused by low illumination and high dust environment at the working face and
Dalian XU   +4 more
core   +1 more source

Toward Carbon Neutrality: Pathways and Challenges in Green Steel Production

open access: yescScience, Volume 2, Issue 2, June 2026.
ABSTRACT Steel, a cornerstone of modern civilization and economic growth, has experienced exponential production growth, resulting in substantial carbon emissions owing to reliance on fossil‐based reducing agents and fuels. Although conventional steelmaking methods have improved, achieving the climate targets outlined in the Paris Agreement requires ...
Xianfeng Hu   +3 more
wiley   +1 more source

Influence of Coal Gangue Volume Mixing Ratio on the System Contact Response When Multiple Coal Gangue Particles Impacting the Metal Plate and the Study of Coal Gangue Mixing Ratio Recognition Based on the Metal Plate Contact Response and the Multi-Information Fusion

open access: yesIEEE Access, 2020
In order to clearly grasp the influence rules of the coal gangue volume mixture ratio on the system contact response, and finally realize the coal gangue mixing ratio recognition according to the contact response differences, on the basis of the Hertz ...
Yang Yang   +3 more
doaj   +1 more source

Design of vibration sensor for coal gangue identificatio

open access: yesGong-kuang zidonghua, 2021
At present, there are a variety of coal gangue identification technologies in automatic top coal mining. Gamma ray is too expensive and harmful to human body. Infrared technology is affected by ambient temperature.
CAO Guanqiang   +4 more
doaj   +1 more source

Guide for the microscopical identification of ore and gangue minerals [PDF]

open access: yes, 2020
Reflected-light microscopy is an essential method in earth and materials sciences for the observation of opaque minerals in rocks, metallic ores, coals, and of synthetic phases in slags, cements, metalls/alloys and coal.
Neumann, Udo
core   +1 more source

Stress Redistribution Mechanisms and Subsidence Control of Fluidized Gangue Backfilling in Underground Coal Mining: Integrated Experimental and Numerical Investigation

open access: yesEnergy Science &Engineering, Volume 14, Issue 5, Page 2476-2498, May 2026.
Fluidized gangue backfilling controls mining subsidence through stress redistribution in composite backfill‐pillar systems, reducing surface settlement and stress concentrations. Multi‐scale experimental and numerical analysis provides quantitative design parameters for optimizing ground control in sustainable underground coal mining operations ...
Weilong Zhang   +11 more
wiley   +1 more source

Research on data-driven detection technology of smart coal mine

open access: yesGong-kuang zidonghua, 2020
Data-driven detection technology is an effective part of development of smart coal mine. It can predict behavior of future object system without knowing accurate analytical model of smart coal mine big data system.
PAN Hongguang, PEI Jiabao, HOU Yuanbi
doaj   +1 more source

Research and application of intelligent caving technology in fully mechanized working face

open access: yesGong-kuang zidonghua, 2021
The traditional top coal caving control mainly relies on manual coal caving control, which uses single-round of sequential coal caving. The working face equipped with electro-hydraulic control system mainly adopts the two-round sequential coal caving ...
WU Tong, YU Rui, LIU Qing, WEI Wenyan
doaj   +1 more source

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