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Principles and key technologies for the large-scale ecological utilization of coal gangue [PDF]
Coal is the main energy in our country and the ballast stone of energy security. As an inevitable product in the process of coal mining and coal washing, coal gangue has an annual output of more than 700 million tons, which is in urgent need of large ...
Yanling ZHAO, Zhenqi HU, Zhen MAO
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steel research international, Volume 97, Issue 8, Page 4119-4125, August 2026.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 +5 more
wiley +1 more source
True triaxial test and failure criterion of coal gangue concrete
Meitan xuebaoIn view of the pollution caused by the large storage of coal gangue and the shortage of natural aggregate in concrete, using coal gangue as coarse aggregate is a reasonable way to solve the above problems.
Weiping ZHAO +5 more
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Current situation and progress of coal gangue resource utilization
Against the backdrop of achieving the goals of “peak carbon emissions and carbon neutrality”, coal, as the cornerstone of national energy security, plays a crucial role in the green development of our country’s economic construction and social ...
Tao ZHU +4 more
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Image Recognition of Coal and Coal Gangue Using a Convolutional Neural Network and Transfer Learning
, 2019 Recognizing and distinguishing coal and gangue are essential in engineering, such as in coal-fired power plants. This paper employed a convolutional neural network (CNN) to recognize coal and gangue images and help segregate coal and gangue.
Derek B. Apel +4 more
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steel research international, Volume 97, Issue 7, Page 3851-3869, July 2026.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 +3 more
wiley +1 more source
Toward Carbon Neutrality: Pathways and Challenges in Green Steel Production
cScience, 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
Research of Comprehensive Utilization of Coal Gangue
DEStech Transactions on Engineering and Technology Research, 2018 Oil and coal are abundant in China and it is a superiority for the development. Coal gangue come from the course of coal exploitation, and processing, which is one of the solid wastes of industry biggest in emission of our country. How to solve this environment pollution and effectively utilize the coal gangue is a main subject and difficult problem ...
JIA HAN +3 more
openaire +2 more sources
, 2018 Recognition of coal and gangue (roof rock) is a key technology to realize fully mechanized top coal caving automated mining. This paper proposes to detect the instantaneous refuse content of drawn coal and gangue mixture during top coal caving by using ...
Changyou Liu, Ningbo Zhang
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Sodium-based alkali-activated foams from self-ignition coal gangue by facile microwave foaming route
, 2022 To solve the problems of difficulties in reuse and low utilization of coal gangue, a high value-added strategy was proposed using coal gangue to produce porous ceramic materials. Alkali-activated coal gangue foams were fabricated using self-ignition coal
Qiao Y. +8 more
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