Results 51 to 60 of about 4,150 (219)

Coal gangue in asphalt pavement: A review of applications and performance influence

Case Studies in Construction Materials
The comprehensive utilization of coal gangue is low, and this causes serious environment problems and security risks. The physical and chemical properties of coal gangue were analyzed in this paper, and the estimated value of different chemical ...
Luo Yaofei, Zhao Xingchen, Zhang Ke
doaj   +1 more source

MnO2-TiO2 Composite Additives Driven Low-Cost Fabrication of Coal Gangue/Bauxite Ceramic Proppants [PDF]

The urgency of resource utilization for coal gangue has driven innovations toward its high-value processing technologies. Although coal gangue can serve as a low-cost source of silicon and aluminum—reducing raw material costs by 14% compared to pure ...
Yuan, Tian, Ge, Lei, Zhang, Jin, Li, Xiaogang, Zhu, Jingyi, Yang, Zhaozhong, Zhang, Liehui, Dorosti, Fatereh, Zhang, Heng, Yang, Hongcheng, Wang, Hao   +10 more
core   +1 more source

Research on method of acquiring high quality coal gangue images under multi-factor illumination condition

Meitan kexue jishu, 2023
Aiming at the problem of poor imaging quality of coal and gangue surface features and low identification rate of coal and gangue caused by insufficient illumination conditions in the process of online coal separation,a new high-quality coal gangue image ...
CAO Xiangang, HAO Pengying, WANG Peng, LIU Siying, WU Xudong, HUO Xiaoquan   +5 more
doaj   +1 more source

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

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

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

Influence of an Electromagnetic Field on Direct Reduction of Iron Oxide Using Hydrogen as a Reducing Agent

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, Oleksandr Gryshyn, Oleksandr Velychko, Oleksandr Grek, Anzhela Nadtochiy, Olena Volkova   +5 more
wiley   +1 more source

Extraction of Coal and Gangue Geometric Features with Multifractal Detrending Fluctuation Analysis

Applied Sciences, 2018
The separation of coal and gangue is an important process of the coal preparation technology. The conventional way of manual selection and separation of gangue from the raw coal can be replaced by computer vision technology.
Kai Liu, Xi Zhang, YangQuan Chen
doaj   +1 more source

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
wiley   +1 more source

Experimental study on performance of fly ash and coal gangue mixed slurry

, 2023
In order to explore the properties of the mixed slurry of fly ash and gangue, fly ash and gangue of different particle sizes were used as the test materials, the orthogonal experimental method was adopted, and the test data were processed by SPSS ...
LI Linzhe, GU Tianyu, YUAN Fei, ZHANG Yong, ZHANG Yubao, WANG Qiqing   +5 more
core   +1 more source