Gangue
( ɡæŋ) or gang n 1. (Metallurgy) valueless and undesirable material, such as quartz in small quantities, in an ore 2. (Mining & Quarrying) valueless and undesirable material, such as …
Bacterially induced CaCO3 precipitation for the enhancement of …
The two types of coal gangue used in this study were from the same mining area, with various colors (white and black). The chemical composition of each type of coal gangue was tested by use of X-ray Fluorescence (Bruker S8 Tiger, XRF) and can be seen in Table 1.The apparent density and bulk density of white gangue (WG) and black …
Propagation of stress wave and fragmentation characteristics of gangue
The laboratory experiment of gangue-containing coal by water jets was constructed to verify this numerical model. The propagation of stress waves in the gangue-containing coal, the fragmentation characteristics of coal, and the blocking effects of gangue on the stress wave propagation were scrutinized using numerical simulation and …
The Mechanical Properties of Gangue Paste Material for …
Gangue paste material is mainly composed of coal gangue with particle size, which is mixed with cement. Fly ash and additives can be added to change its performance. In this paper, the influence of each component on the mechanical properties of gangue paste material was studied by an orthogonal experiment. The conversion …
Characteristics, speciation, and bioavailability of mercury and
During coal mining activities, a lot of coal gangue is produced, which usually contains high mercury (Hg) concentrations as well as the acid mine drainage (AMD) generator of pyrite. In the present study, the total mercury (THg) and methylmercury (MeHg) in gangue, water, sediment, paddy soil, and rice samples, collected from abandoned …
Chen et al.
Gangue pile structure is loose, unstable, and very easy to cause collapse, landslides and other natural disasters; The voidage between coal gangue is large, and its surface is in full contact with air, the carbon minerals and sulfur iron ore (the main component of FeS 2) in gangue is oxidized by air. And then being
Acid Leaching Extraction Mechanism of Aluminum and Iron …
1. Introduction. Coal gangue is solid waste produced by coal mining and washing [].It currently accounts for the largest amount of industrial waste in China [], and its piling pollutes the environment and produces additional negative effects [3,4,5,6].It mainly consists of kaolinite, quartz, other clay minerals, and a minor amount of coal [].It is a …
Understanding the Entrainment Behavior of Gangue …
Flotation is one of the most used methods to upgrade natural graphite resources. However, the efficiency is usually decreased due to the entrainment of undesirable fine gangue minerals. In this work, the impact of different factors such as particle size, pulp density, and flotation reagent on the entrainment of mica and quartz in …
gangue
gangue, gang /ɡæŋ/ n. valueless and undesirable material, such as quartz in small quantities, in an ore. Etymology: 19th Century: from French gangue, from German Gang …
(PDF) The identification of coal and gangue and …
Accordingly, in order to preliminary screen coal types, this paper proposed a method to predict the coal metamorphic degree while identifying coal and gangue based on Energy Dispersive X-Ray ...
Associations of Gangue Minerals in Coal Flotation Tailing …
The mass production of flotation tailings has become a serious risk to the environment. Re-concentration of tailings is one of the best ways to solve this problem, which requires a better understanding of flotation tailings. In the present work, flotation kinetics, timed-release flotation, X-ray diffraction (XRD), Fourier transform infrared …
Preparation of coal gangue-slag-fly ash geopolymer …
Solid waste silica-alumina materials: ① Raw coal gangue was obtained from Handan (Hebei, China). The microscopic morphology is shown in Fig. 1, the XRD pattern is shown in Fig. 2, and the industrial analysis is shown in Table 2.The main mineral components of the raw coal gangue are kaolinite (52.2%), mica (16.9%) and quartz …
Mechanism on Activation of Coal Gangue Admixture
Coal gangue, an industrial waste, is rich in silicon and aluminum phase and may be used as a mineral admixture in concrete after moderately stimulating activity, allowing for efficient solid waste utilization. This study used a mortar strength and activity evaluation method to investigate single or compound activation methods to find the …
Effects of gangue compositions on reduction process of
The influence of gangue compositions (mainly composed of SiO2, CaO, MgO and Al2O3) on the reduction kinetics of carbon-bearing iron ore pellets was estimated at 1373–1473 K in N2 atmosphere. The results showed that gangue content and each component distribution affected the pellets reduction process. The reduction rate was …
Experimental Study on Preparation of Dry-Mixed …
In this experiment, the influence of coal gangue as the admixture on the performance of dry-mixed mortar was studied, and the results were analyzed by XRD and SEM. The effects of different ways of …
Foreground segmentation and location of coal and gangue …
As one of the major energy sources in many countries [1, 2], the consumption rate of coal resources is very high, which has a great impact on the economy [3, 4].As the accompanying product of coal, the quantity of gangue is also increasing, which seriously affects [] the utilization of coal, coal mine safety and the ecological …
Fabrication and characterization of self-ignition coal gangue
The average gangue discharge rate (the ratio of coal gangue discharge to total coal production) is approximately 10 ~ 20% (Cong et al. 2016), and gangue is the largest solid waste in output ...
GANGUE definition in American English
foundate Nov 15, 2023. clownshow. GANGUE definition: valueless and undesirable material, such as quartz in small quantities, in an ore | Meaning, pronunciation, …
Research on the Strong Generalization of Coal Gangue …
A coal gangue image recognition method based on complex conditions is proposed to address the current issue of image-based coal gangue recognition being greatly affected by complex conditions. First, complex conditions such as different shooting backgrounds, shooting distances, and lighting intensities are set to simulate the …
FLOTATION TEST PROCEDURE (developed by Mike …
If the gangue component is active it is usually controllable with a suitable depressant because of the high degree of liberation between metal/mineral and gangue. Performing a flotation rate test characterises the ore. The results of the test are used to calculate the flotation kinetics of metal or mineral and gangue under chosen test conditions.
Coal-gangue recognition via multi-branch convolutional …
Traditional coal-gangue recognition methods usually do not consider the impact of equipment noise, which severely limits its adaptability and recognition accuracy. This paper mainly studies the ...
Effects of Water Immersion on the Long-Term …
To study the long-term bearing characteristics of crushed gangue in goaf under water immersion conditions, the creep test of the crushed gangue in the water immersion state was performed by …
gangue pronunciation: How to pronounce gangue in …
Definition of gangue. substance qui entoure une pierre précieuse et, substance qui entoure quelque chose de précieux; par extension entouré d'une gangue, substance sans valeur qui entoure une pierre précieuse et, substance qui entoure quelque chose de précieux; Synonyms of gangue. bordé pronunciation bordé [fr] ceinturé pronunciation ...
GANGUE definition and meaning | Collins English …
or gang (ɡæŋ ) noun valueless and undesirable material, such as quartz in small quantities, in an ore Collins English Dictionary. Copyright © HarperCollins …
Microstructure of Coal Gangue and Precipitation of Heavy
The microstructure and mineral composition of the gangue play a decisive role in the precipitation of heavy metal elements. In this study, the microstructure, mineral composition, and precipitation of heavy metal elements of coal gangue with different weathering degrees were analyzed through electron microscopy, X-ray diffraction, and …
Utilization of coal gangue for the production of brick
Abstract. Coal gangue, an industrial solid waste discarded from coal mining and processing, was used as the sole raw material to prepare brick. The coal gangue was crushed, homogenized, milled and ...
Study on Preparation of Coal Gangue-Based Geopolymer Concrete
2. Alkaline Dry Powder-Activated Coal Gangue-Based Geopolymer Concrete 2.1. Preparation Techniques (1) Coal gangue and fly ash required for preparation: the coal gangue in the experiment is the spontaneous combustion coal gangue of Gaode Mine in the Fuxin City, Liaoning Province, and its chemical composition is shown in Table 1.The …
Coal and Gangue Separating Robot System Based on …
1. Introduction. In coal production, the raw coal mined directly from coal mines contains a lot of gangue, which contains a lot of heavy metals, and affects the calorific value of coal, causing serious pollution to the environment [].Therefore, it is essential to separate coal and gangue to make them play their respective roles [2,3].As an important part of the coal …
Gangue
Gangue - definition of Gangue - synonyms, pronunciation, spelling from Free Dictionary Search Result for "gangue": The Collaborative International Dictionary of English v.0.48: …
How to pronounce gangue | HowToPronounce
Pronunciation of gangue with 17 audio pronunciations, 1 meaning, 11 translations, 1 sentence and more for gangue.
Mineralogical characterisation of naturally floatable gangue …
1.. IntroductionThe Bushveld Complex in South Africa is a layered igneous intrusion stretching over approximately 65 000 km 2 (Eales and Cawthorn, 1996) and is host to some of the world's major platinum group mineral (PGM) ore deposits including the Merensky Reef, UG2 Reef and Platreef.Mining and mineral processing of these three ore …
Coal gangue detection and recognition algorithm based on …
Using the coal gangue detection and recognition device built in the laboratory, the trained SSD, YOLOv3,YOLOv4, YOLOv5 and DCN-YOLOv3 algorithm network models were adopted to detect coal gangue. Figure 10 shows the effect of the detection of coal and gangue of three different sizes: 4–6, 6–8 and 10–12 cm. The SSD …
How to pronounce gangue | HowToPronounce
Last updated. How to say gangue in English? Pronunciation of gangue with 17 audio pronunciations, 1 meaning, 11 translations, 1 …
Excess sulfur and Fe elements drive changes in soil and
Coal gangue piles accumulate outside mines and can persist for years, negatively impacting the regional environment. To determine the main cause of soil pollution at coal gangues, several coal ...