Results 41 to 50 of about 309,554 (217)
Research progress on in-situ intelligent sorting and filling technology of coal gangue underground [PDF]
Coal gangue needs to be transported to the ground for further treatment in traditional underground mines, which not only occupies land spaces, but also causes atmospheric and environmental pollutions due to spontaneous combustion and rainwater leaching ...
Fengqi GUO +4 more
core +1 more source
, 2023 Coal gangue is one of China’s main industrial solid wastes, which contains various harmful heavy metal elements, such as lead (Pb). The long-term accumulation of coal gangue causes Pb to migrate to the surrounding environment due to weathering and rain ...
Nianqing Wu +4 more
core +1 more source
Coal gangue in asphalt pavement: A review of applications and performance influence
Case Studies in Construction MaterialsThe 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
Critical Appraisal of Coal Gangue and Activated Coal Gangue for Sustainable Engineering Applications
Applied SciencesCoal gangue, a primary solid waste by-product of coal mining and processing, constitutes approximately 10–15% of total coal output. Its accumulation poses substantial environmental challenges, including land occupation, spontaneous combustion, acid mine drainage, and heavy metal leaching. Despite its high silica and alumina content (typically exceeding
Narlagiri Snehasree +2 more
openaire +1 more source
, 2023 To address the pollution problem of acid mine drainage (AMD) characterized by high concentrations of Fe2+, Mn2+, and SO42−, a combination of coal gangue (CG) and sulfate-reducing bacteria (SRB) was employed.
Yanrong Dong +8 more
core +1 more source
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 +5 more
doaj +1 more source
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 +6 more
wiley +1 more source
On the academic ideology of “Sorting the gangue is sorting the images”
Meitan kexue jishuCoal 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 +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 +5 more
doaj +1 more source
Experimental Research on Improving Activity of Calcinated Coal Gangue via Increasing Calcium Content
, 2023 In this investigation, non-spontaneous combustion coal gangue was activated by two methods: (1) low-temperature calcination and (2) calcium addition.
Lei Song +9 more
core +1 more source