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Based on the difference of the gray scale and texture in the images of coal and gangue, the theory of the gray-level histogram was introduced. 5 characteristic parameters which are considered as the classification features were extracted from the gray-scale histogram.

Coal Gangue Image Identification and Classification with

A novel method of the coal gangue identification and classification is introduced, and the coal gangue image process strategy using wavelet transform is proposed to select the coal gangues out from coal bulk on the mining belt transporter in this paper. The identification principle is described, and the automatic selection system is presented, the embedded zero-tree wavelet (EZW) compression ...

Image Recognition of Coal and Coal Gangue Using a

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. A typical workflow for CNN image recognition is presented as well as a strategy for updating the model parameters.

Energies Free Full Text Automatic Coal and Gangue

Gangue is a solid waste with low carbon content, which is usually mixed into the raw coal during production. Due to the inefficiency of gangue separation, much gangue flows out of the mining area, which increased the transporting costs and caused severe pollution to the environment [].Therefore, effectively sorting gangue from the raw coal is essential in improving the quality of the coal and ...

Image Recognition of Coal and Coal Gangue Using a

Downloadable! 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. A typical workflow for CNN image recognition is presented as well as a strategy for updating the model parameters.

Research on Coal and Rock Type Recognition Based on

In order to identify different kinds of coal, rock, and gangue, the FPV integrated image transmission camera is used to collect images of 6 types of coal, 8 types of rocks, and 2 types of coal gangue, and the images are processed based on the two-dimensional discrete wavelet transform (2D-DWT) based on the steerable pyramid decomposition (SPD). The maximum likelihood estimation method is used ...

Site Classification and Site Quality Evaluation of the

Wang C. (2014) Site Classification and Site Quality Evaluation of the Land for Coal Gangue Dump in Fushun Mining Area. In: Zhong S. (eds) Proceedings of the 2012 International Conference on Cybernetics and Informatics.

Mapping and detection of land use change in a coal mining

The classification approach was validated for its flexibility and robustness. Multitemporal classification results indicated that land use changed considerably in the Panxie coal mining area from 1989 to 2013. The urban, coal and coal gangue, and water areas increased rapidly …

Application of EMD Based SVD and SVM to Coal Gangue

Coal-gangue interface detection during top-coal caving mining is a challenging problem. This paper proposes a new vibration signal analysis approach to detecting the coal-gangue interface based on singular value decomposition (SVD) techniques and support vector machines (SVMs). Due to the nonstationary characteristics in vibration signals of the tail boom support of the longwall mining …

Fine coal dry classification and separation

commercially available classification technologies are far from meeting the industrial needs, especially for dry classification of moist raw coal at separation size smaller than 6mm. A new classification technology of raw coal, referred to as vibrated fluidized bed air classification technology, has been invented and patented by the authors.

Crusher Hammer Characteristics And Classification

Crusher Hammer Classification Forging Hammer. Forging hammer mainly use in crushing pebbles, coal gangue, limestone.Forging Crusher hammer with high-quality train wheel steel (65Mn material, good impact resistance, toughness, wear resistance, and not easy to break) the use of forging machinery repeatedly forging metal billet to produce deformation in order to obtain a certain mechanical ...

Classification of coal and gangue under multiple surface

Nov 01, 2019 Abstract Coal and gangue classification is a key problem in automating the task of gangue picking during the preparation of coal. Four coal properties, namely raw coal with a dry clean surface, a wet clean surface, a dry surface covered by slime, and a wet surface covered by slime, are frequently encountered in real situations.

Classification of coal and gangue under multiple surface

Dou et al. [8, 9] classified coal and gangue into four different surface conditions (dry, wet, with slime, and without slime) by using a reliefbased support vector machine (relief-SVM). ...

Identification Method of Coal and Coal Gangue Based on

Unlike these of the probabilistic neural network (PNN) intelligent classification model and the learning vector quantization (LVQ) neural network classification model, the recognition and classification accuracies of the three can reach 100%, but the classification speed of SVM is the fastest, only taking 0.007916 s, which fully reflects the feasibility and efficiency of the capacitance method in …

Visual classification method based on CNN for coal gangue

Sep 20, 2020 The key technology of coal gangue sorting robot is the identification and classification of coal. This paper proposes a visual classification method based on CNN, constructs a visual depth neural network FCCN(Fast coal classification net), and implements a …

[A Classification Method Based on the Combination of

In the traditional classification of visible and near-infrared remote sensing, part of the gangues might be misclassified as coal, due to the phenomenon of “different objects with the same spectrum”, resulting in the decrease of classification accuracy.

Visual classification method based on CNN for coal gangue

Visual classification method based on CNN for coal-gangue sorting robots. Sorting coal and gangue is an important means to improve the heating capacity of coal, realize the graded sale of coal and maximize the production benefits of coal mines. At present, the sorting of coal and gangue is still mainly manual, but the manual sorting efficiency is low and labor intensity is high, so it is particularly …

Research on Coal Gangue Identification by Using

May 27, 2018 The recognition rate of the original LeNet-5 is only 50.67%. After the improvement, the recognition rate of coal gangue reaches 95.88%, which is much higher than that of the traditional recognition method. The results show that convolution neural network can effectively learn and extract the image features of coal and gangue automatically, classify coal and gangue, and provide reference for identification and classification of coal …

Cascade network for detection of coal and gangue in the

Jan 02, 2021 Since coal and gangue are randomly distributed on the conveyor belt, it is not only necessary to design a classification model, but also to detect the localization of the objects. Therefore, a hierarchical framework for coal and gangue detection was proposed, and the samples of training datasets were collected from three different regions . However, previous studies mainly …

Nondestructive Identification of Coal and Gangue via Near

In the literature, research on image recognition and classification of coal and gangue is mainly based on the grayscale and texture features of the coal and gangue.

Coal Gangue Crushing and Screening JXSC Mine

Coal gangue is a kind of pollution sources which produced in coal mining. It can recycle via coal gangue crushing and screening. The gangue discharged from coal mining is composed of various kinds of rocks, the hardness and calorific are different.

Coal gangue processing Dewo Machinery

Coal gangue introduction: Coal gangue is a rock mixed with organic and inorganic compounds co-deposited with coal during coal formation.Usually in a thin layer and in the coal seam or in the top of the coal seam, the bottom of the coal seam.From the perspective of coal mining, domestic coal mines produce 104.5 billion tons of coal, 38.5 billion tons of coal, and 1.9 billion tons of waste rock ...

Trace Elements in Coal Gangue A Review IntechOpen

Apr 13, 2017 Coal gangue is one of the largest industrial residues. It has high ash content, low carbonaceous content, and heating value. Meanwhile, it has some trace elements. Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land. Now, coal gangue utilization is a matter of great concern …

Coal Gangue and its Application Research in Building

The current statistics show coal gangue discharge is 100 million tons per year, and the accumulated discharge has been as high as 4.5 billion tons. It comprises the largest portion of solid waste in our country. Its storage not only requires valuable land resources, but also pollutes the air, water and soil of the storage sites, resulting in waste of resources.

Intelligent Sorting System of Coal Gangue with Machine

Gangue sorting is an important part of coal production, which is to choose gangues from coal blocks. At present, most of the separation of large gangues is selected by hand selection in China. The labor intensity of the workers is large, the production efficiency is low, and the working environment is bad, which seriously affects the physical and mental health of the workers.

Fine coal dry classification and separation

commercially available classification technologies are far from meeting the industrial needs, especially for dry classification of moist raw coal at separation size smaller than 6mm. A new classification technology of raw coal, referred to as vibrated fluidized bed air classification technology, has been invented and patented by the authors.

Crusher Hammer Characteristics And Classification

Crusher Hammer Classification Forging Hammer. Forging hammer mainly use in crushing pebbles, coal gangue, limestone.Forging Crusher hammer with high-quality train wheel steel (65Mn material, good impact resistance, toughness, wear resistance, and not easy to break) the use of forging machinery repeatedly forging metal billet to produce deformation in order to obtain a certain mechanical ...

IET Digital Library The Journal of Engineering

Mar 03, 2020 Study on capillary water absorption properties of polypropylene fibre coal gangue ceramsite concrete under freeze-thaw damage. Author(s): Jisheng Qiu ; Peng Guo ; Min Xing ; Xiao Guan ; Guanghong Xiong Source: The Journal of Engineering, Volume 2020, Issue 3, p. 98 –103; DOI: 10.1049/joe.2019.0773; Type: Article + Show details-Hide details; p.

GB T 35986 2018, PDF in English Chinese Standard

Determination of ignition loss in coal gangue: GB/T 35986-2018: Valid: GB/T 35986-2018: GB/T 35986-2018: Chinese: 16: Add to Cart =1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

1. Introduction

The existence of coal gangue is an unavoidable problem in the process of coal mining. Therefore, the properties of coal gangue need to be studied. In this paper, lignitous coal gangue and bituminous coal gangue are taken as examples, and their characteristics are shown in Table 3. Table 3. Analysis of gangue types and characteristics.

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