Results 61 to 70 of about 361 (167)

Study on Coal Gangue Identification Based on Vibration and Its Adaptability to Coal-Caving Process Parameters

Shock and Vibration, 2023
The broken top coal and gangue in the fully mechanized cave mining will be released from the rear of the hydraulic support in the form of bulk. In this process, the medium properties through the coal opening can be judged by monitoring the vibration ...
Lirong Wan, Jiantao Wang, Dejian Ma, Zhaoji Li, Zhenguo Lu, Zhaosheng Meng   +5 more
doaj   +1 more source

Research on Mechanical Response Mechanisms of Interlayer Rock Strata in Closely Spaced Coal Seam Mining

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Closely spaced coal seams holds significant importance in global energy development, as the mechanical response mechanism of interlayer rock strata directly governs roadway deformation and stress concentration levels. This study investigates the impact of bearing structures within interlayer strata on the stability of surrounding rock during closely ...
Yuancheng Pei, Pucheng Rui, Fengyuan Lv, Wenyue Qi, Qiming Wei, Xiaolong Sun   +5 more
wiley   +1 more source

Research on the DAS Recognition Method for Blockages in Long‐Distance Downhole Backfilling Pipelines of Goaf Coal Gangue Slurry

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Against the background of the continuous expansion of deep coal mining scale, goaf stability control and gangue disposal have become key issues restricting the safe and efficient advancement of engineering projects. The underground goaf gangue slurry backfilling technology, as a core method for gangue disposal in deep mining, not only fundamentally ...
Gu Wenzhe, Zhang Dingding, Sheng Fengtian, Wang Ziming, Qiu Fengqi, Tong Liang, Wu Yuyi, Chai Jing, Deepali   +8 more
wiley   +1 more source

Lanthanide Sulfate Recovery by Synergistic Dimethyl Ether and Na2SO4 Fractional Crystallization

ChemSusChem, Volume 18, Issue 24, December 13, 2025.
This work demonstrates synergistic lanthanide salt recovery from an aqueous magnet leachate to single ppm concentrations using Na2SO4 combined with dimethyl ether crystallization. This waste valorization process minimizes chemicals consumed and waste generated while maximizing the recovery of a critical material product. Lanthanides (Lns) are important
Chloe Tolbert, Caleb Stetson, Denis Prodius, Christopher Orme, David Appy, Ikenna Nlebedim, Aaron D. Wilson   +6 more
wiley   +1 more source

Battery‐Grade Lithium Materials: Virgin Production and Recycling, a Techno‐Economic Comparison

Advanced Energy Materials, Volume 15, Issue 46, December 9, 2025.
With this study a framework has been created to analyze new innovative lithium compound manufacturing processes for their cost and environmental competitiveness. This analysis includes details on virgin and recycled pathways to produce lithium carbonate or lithium hydroxide monohydrate.
Sabine M. Gallagher, Nighat A. Chowdhury, Qiang Dai, Jeffrey S. Spangenberger   +3 more
wiley   +1 more source

Hydrogen Direct Reduction: History and Pathways for Cost Reduction

cScience, Volume 1, Issue 1, December 2025.
ABSTRACT The steel industry, a critical pillar of global economic development, is highly energy‐intensive, accounting for approximately 7%–9% of global energy‐related CO2 emissions. The transition from traditional carbon‐intensive metallurgy to hydrogen‐based metallurgy represents a pivotal pathway for the green and sustainable development of the steel
Chuanlin Fan, Feng Pan, Sugang Ma, Yu Ge, Qingshan Zhu   +4 more
wiley   +1 more source

The Overburden Structure Characteristics and Subsidence Reduction Mechanism of Mining by Overburden Bed Separation Grouting

Energy Science &Engineering, Volume 13, Issue 12, Page 6415-6429, December 2025.
The Overburden Structure Characteristics and Subsidence Reduction Mechanism of Mining by Overburden Bed Separation Grouting. ABSTRACT Overburden bed separation grouting (OBSG), a green mining method, can prevent coal‐mining subsidence reduction and protect the environment of mining areas.
Zhiyou Gao, Ning Jiang, Haiyang Pan, Zhenzu Qu, Chao Gong   +4 more
wiley   +1 more source

Dynamic weighing method for coal and gangue in coal-gangue sorting robots

Gong-kuang zidonghua
Image recognition-based coal-gangue sorting robots have become a research hotspot in the field of coal-gangue separation. To address the issue of low recognition accuracy caused by complex real-world conditions—such as dust adhesion, lighting variation ...
CAO Xiangang, LIU Yizhe, WU Xudong, WANG Peng, ZHANG Ye   +4 more
doaj   +1 more source

Research on multi-manipulator coal and gangue sorting robot system based on machine visio

Gong-kuang zidonghua, 2019
Existing coal and gangue sorting methods mainly use image processing and pattern recognition technology to identify and sort coal and gangue according to texture characteristic values of coal and rock.
WANG Peng, CAO Xiangang, XIA Jing, WU Xudong, MA Hongwei   +4 more
doaj   +1 more source

Recognition method of transient falling images of coal and gangue separation in underground solid backfill mining with multimodal large language models

Meitan kexue jishu
Solid backfill coal mining, as a green mining method that balances resource recovery and ecological protection, relies on coal and gangue separation as a core process for the efficient operation of integrated underground mining, selection, and backfill ...
Yun ZHANG, Yixuan YANG, Xingping LAI, Liang TONG, Shenggen CAO, Yongzi LIU, Long ZHANG, Licheng BAI, Hao YE   +8 more
doaj   +1 more source