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The number of parameters is reduced by 47.6%, and the computational effort is reduced by 49.4%. Meanwhile, the recognition accuracy of the improved SG-YOLO model for coal and gangue under low illumination is 96.5% and 98.5% respectively, which effectively improves the recognition accuracy of coal rain gangue under low illumination …
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The amount of coal gangue, a by-product of coal mining and washing, is rapidly increasing with the growing trend of energy consumption. The accumulated coal gangue without appropriate utilization has resulted in a squander of resources, waste …
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Using coal gangue (CG) as raw material, a new type of all solid-waste-based 13-X molecular sieve material was controllably prepared by alkali fusion-hydrothermal method. The synthetic molecular sieve was used as a solid adsorbent to treat Cd2+-containing wastewater, and its adsorption behavior on Cd2+ in aqueous solution …
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Coal gangue, affected by spontaneous combustion and high temperature, can have the following impact on environment [11-12]. For one thing, spontaneous combustion of Coal Gangue Heaps releases large amounts of toxic and harmful gases including CO, CO2, SO2, H2S, etc., which cause serious pollution to the atmospheric …
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The coal gangue in China is the core field of bulk solid waste comprehensive utilization due to its massive stock and emission, high concentration of output, small proportion of high-value-added utilization, and outstanding environmental impact. Hence, the prospect of resource utilization of coal gangue is broad. The existing disposal …
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This article summarizes the research progress of coal gangue treatment and utilization under the carbon neutralization strategy. It focuses on the carbon …
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Accurate and rapid recognition of coal and gangue is an important prerequisite for safe and efficient mining in top coal caving face. In this article, a novel coal-gangue recognition method is put forward based on an improved antlion optimization (IALO) algorithm, variational modal decomposition (VMD), and an improved MobileNetV2 network. First, …
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DOI: 10.1016/J.TCA.2015.06.018 Corpus ID: 92785461; Investigation of combustion characteristics and kinetics of coal gangue with different feedstock properties by thermogravimetric analysis
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1. Introduction. Coal gangue, a waste produced during coal mining, has been regarded as the largest source of industrial waste in China. It is estimated that the production of 1 t coal generates 0.1–0.25 t coal gangue [1], and the total stockpile of coal gangue exceeds 6 billion tons in China [2], [3].The coal gangue not only occupies …
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Coal gangue has become one of the industrial wastes with the largest annual discharge and accumulated stock in China. The disorderly accumulation of coal gangue not only occupies a large amount of land resources and causes natural disasters, but also pollutes the surrounding ecological environment, which in turn affects human …
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The coal gangue used in this study was obtained from Shuozhou, Shanxi province, China. The chemical composition of the raw coal gangue as well as the residue ash were quantified by an inductively coupled plasma optical emission spectrometer (ICP-OES, Pekin-Elmer, Optima 5300DV) and X-ray fluorescence spectrometry (XRF, …
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Coal gangue as one of the largest industrial solid wastes in China brings about very serious environmental, social and economic problems. Comprehensive utilization of coal gangue is of importance to sustainable development of society and economy. China has made great progress in comprehensive utilization of coal gangue in the latest 40 years since the …
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1.2. Source and distribution of CG in China. CG is a kind of black gray shale rock produced in the process of coal production. China is the world's largest coal producer (Munir et al., 2020) and also the largest coal consumer.Coal provides about 62% of China's energy demand (Mita et al., 2015).In the process of sorting and processing, the production of …
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Starting from the resource characteristics of coal gangue, this paper systematically discusses the ways and research status of coal gangue resource utilization, mainly including: extracting and recovering …
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DOI: 10.1016/j.mineng.2023.108450 Corpus ID: 264318580; Investigating comparisons on the coal and gangue in various scenarios using multidimensional image features @article{Lv2023InvestigatingCO, title={Investigating comparisons on the coal and gangue in various scenarios using multidimensional image features}, author={Ziqi Lv and Yao …
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Coal gangue contains many heavy metals (Xu et al., 2016; Yang et al., 2008) and organic pollutants ... 2023), and especially under the guidance of China's fertilizer reduction policy, it will play a more important role in agricultural management. The current study found that organic fertilizer significantly improved coal gangue technosol ...
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Coal gangue, which is mainly generated during coal excavation, mining, and coal washing, is an industrial solid waste that is recognized as an environmental pollutant. The ever –
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Coal gangue, as a solid waste generated during coal mining and washing, not only encroaches on a large number of land resources but also poses certain risks to the environment. It is reported that the cumulative amount of coal gangue piled up in China has reached 6 billion tons, and the annual discharge amount is about 500–800 million tons.
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Although the calcination-based activation of coal gangue is important for its valorization in the form of cementitious materials, the related works mainly focus on high-quality coal gangue, neglecting its low-quality counterpart. To bridge this gap, we herein conducted the pilot-scale suspension calcination of low-quality coal gangue; explored …
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Abstract Thermally activated coal gangue and lanthanum-modified coal gangue were prepared by thermal activation and hydrothermal methods, respectively. Their structures and properties were characterized by X-ray diffraction (XRD), attenuated total reflection flourier transformed infrared spectroscopy (ATR-FTIR) and transmission …
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The coal gangue is one of the most abundant industrial solid wastes and pollute source of air and water. The use of coal gangue in the production of cement grouting material comforms to the basic state policy of environment protection and the circular using of natural resources.
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The results suggested that coal gangue significantly influences soil S, pH and plant species after 8 years of natural recovery. The CK-far plots contained …
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In this paper, the physical, chemical and pollution characteristics of coal gangue are summarized, and the ecological restoration mode is divided into two modes: …
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Quantitative analysis of the whole rock minerals of coal gangue was conducted using a Nippon Nikkei ultima 4 X-ray diffractometer, and the test results are shown in Fig. 3.According to the ...
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Utilizing the abundant kaolin resources within coal gangue is economically beneficial, although the iron-containing phase in the minerals hampers the value of its utilization. In the present study, CaCl2 served as the chlorination agent for iron removal from coal gangue through chlorination roasting. The study revealed that when the roasting temperature is …
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Abstract Among coal mining-related wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining. A thorough understanding of environmental concerns associated with the current model of ...
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This study delves into the influence of inherent minerals within coal gangue (CG) on the preparation and performance of coal gangue /polyethylene (CG/PE) composites, focusing on the role of SiO 2 in interfacial compatibility.
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Coal gangue has accumulated huge coal gangue piles, occupying lots of land as well as having striking influence on the neighboring environmental effects. This paper seeks a new way of coal gangue treatment in which the coal gangue blended with shale and sludge was sintered in rotary kiln to form lightweight aggregates.
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The coal gangue as the only source of silicon and aluminum was employed to synthesize sodalite and faujasite using hydrothermal method, which directly treated the mixture of pre-treated coal gangue and NaOH solution under hydrothermal environment. X-ray powder diffraction analysis (XRD), thermogravimetry analysis (TG) and differential …
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Global rise in greenhouse gas emissions (GHG) is triggered mainly due to the consumption of fossil fuels for power generation and domestic usage. Among the fossil fuels, coal is a primary contributor to global GHG with substantial emissions generated during its mining and combustion process. Coal gangue, a residue produced during the …
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