Results 41 to 50 of about 9,725 (229)

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

On the academic ideology of “Sorting the gangue is sorting the images”

Meitan kexue jishu
Coal 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, Ye ZHANG, Peng WANG, Xiangang CAO, Zhen NIE, Xiaorong WEI, Wenjian ZHOU, Mingzhen ZHANG   +7 more
doaj   +1 more source

Review of Research on the Properties and Resource Utilization of Coal Gangue Concrete

Kuangchan zonghe liyong, 2023
Coal gangue is a by-product of the production of coal-associated minerals, and belongs to bulk solid waste material. coal gangue concrete is an important practice for its resource utilization.
Yousheng Deng, Ailin Feng, Liqing Meng, Long Li, Mengyu Zhang, Yunfang Zheng   +5 more
doaj   +1 more source

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

Energy Science &Engineering, EarlyView.
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, Jie Zhang, Yuanzhen Zhang, Wenjing Liu, Liang Li, Deyi Nan, Guannan Zhao, Chen Yang, Haiqing Bian, Hua Shao, Xiao Zuo, Changtai Zhou   +11 more
wiley   +1 more source

Изучение минералогического и радионуклидного составов отвальной горелой угольной породы [PDF]

, 2009
Досліджено мінералогічний та радіонуклідний склад гранулометричних фракцій відвальної вугільної породи. Визначено морфологічні особливості поверхні часток різних фракцій породи.
Соколова, А. В., Уханёва, М. И., Хоботова, Э. Б.   +2 more
core  

Vegetation diversity on coal mine spoil heaps-how important is the texture of the soil substrate? [PDF]

, 2019
© 2019, The Author(s). The relationship between the size of the particle fractions of the soil substrate and the diversity of the spontaneously developing vegetation was investigated on coal mine spoil heaps in Upper Silesia (Southern Poland).
Besenyei, L, Bierza, W, Błońska, A, Chmura, D, Kompała-Bąba, A, Magurno, F, Radosz, Ł, Sierka, E, Woźniak, G   +8 more
core   +2 more sources

Modeling the Thermal Properties of Hydrogen‐Based Direct Reduced Iron Using Computational Thermodynamics and Machine Learning

steel research international, EarlyView.
Hydrogen‐based direct reduced iron (H‐DRI) melts differently from scrap and carbon‐bearing DRI. This work combines differential scanning calorimetry experiments, FactSage thermodynamics, and simple composition‐based regression to predict solidus, liquidus, heat capacity, and enthalpy for H‐DRI.
Ankur Agnihotri, Petri Sulasalmi, Pasquale Cavaliere, Ville‐Valtteri Visuri   +3 more
wiley   +1 more source

A Study of Multispectral Technology and Two-Dimension Autoencoder for Coal and Gangue Recognition

IEEE Access, 2020
Coal is one of the main sources of human energy. In the process of coal mining, separating gangue from coal has great significance for environmental protection and energy conservation.
Wenhao Lai, Mengran Zhou, Feng Hu, Kai Bian, Hongping Song   +4 more
doaj   +1 more source

Study of a static screen, jig, spiral, and a compound water cyclone in a placer gold recovery plant [PDF]

, 1987
During the 1986 mining season both laboratory and field test work were conducted to study the performance efficiencies of a wedge-wire static screen, a Pan-American jig, a Reichert Mark VII spiral, and a 12" compound water cyclone.
Cook, D.J., Rao, P.D., Walsh, D.E.
core  

TEM characterization of the fine scale microstructure of a Roman ferrous nail [PDF]

, 2010
This paper describes the microstructure of a Roman ferrous nail through its observation by transmission electron microscopy. The morphologies of pearlitic colonies and ferritic grains are detailed and the relationship between pearlitic colonies and ...
Dabosi, Francis, Douin, Joël, Henry, O., Sciau, Philippe   +3 more
core   +4 more sources