Results 91 to 100 of about 1,612 (205)

Research on separation mechanism of coal gangue photoelectric sorting recognition

Physicochemical Problems of Mineral Processing
How to efficiently realize the separation of coal gangue is a hot issue in coal preparation. In order to solve this problem, this paper proposes research on the identification and separation of minerals in coal gangue based on dual-energy X-rays, and conducts experimental research on four single minerals and several different composite minerals in coal
Haoyu Wang, Wei Zhou, Lingling Wang, An'an Feng, Jinbo Zhu   +4 more
openaire   +1 more source

Palaeozoic oolitic ironstone of the French Armorican Massif: a chemical and structural trap for orogenic base metal-As-Sb-Au mineralization during Hercynian strike-slip deformation. [PDF]

, 2007
In the Saint-Aubin-des-Châteaux quarry (Armorican Hercynian belt, western France), an epigenetic hydrothermal alteration affects an oolitic ironstone layer intercalated within the Lower Ordovician Grès armoricain Formation.
Boulvais, Philippe, Branquet, Yannick, Chauvel, Jean-Jacques, Chiappero, P.J., Gloaguen, Eric, Marcoux, Eric, Moëlo, Y.   +6 more
core   +4 more sources

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

Intelligent identification of coal fractures using an improved U-shaped network [PDF]

To address the challenges of coal fracture image recognition, including interference from gangue and multiscale fractures, a multiscale coal fracture segmentation network model to significantly enhance the recognition of coal fracture structures is ...
Li, Lu, Li, Shengwei, Wang, Dengke, Xia, Yuling, Zhang, Fukai, Zhang, Hongtu   +5 more
core   +1 more source

Creative Strategies to Recover Urban Land in Disuse [PDF]

, 2023
[eng] Industrial land in disuse is a dual carrier of crisis and revitalization of mining cities facing decline. On the one hand, it is an object that carries urban crisis, which has many negative effects on the urban environment, economy, and society. On
Liao, Qipeng
core  

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

Fifth annual conference on Alaskan placer mining [PDF]

, 1983
An abridged format of papers, presentations and addresses given during the 1983 conference held on March 30-31, 1983 compiled and edited by Bruce W. Campbell, Jim Madonna, and M. Susan Husted.Partial funding was provided by the Carl G.
Campbell, B.W., Husted, S.M., Madonna, J.A.   +2 more
core  

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