Research on Coal and Rock Type Recognition Based …

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 …

Coal gangue detection and recognition algorithm based …

1 INTRODUCTION. Coal mine intelligentisation is the core technical support for the high-quality development of the coal industry, and it is a new direction for the …

Symmetry | Free Full-Text | A Coal Gangue Identification Method …

Identification of coal and gangue is one of the important problems in the coal industry. To improve the accuracy of coal gangue identification in the coal mining process, a coal gangue identification method based on histogram of oriented gradient (HOG) combined with local binary pattern (LBP) features and improved support vector machine …

Microstructure of Coal Gangue and Precipitation of …

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 …

A fast recognition method for coal gangue image processing

This paper proposes a modified YOLOv4 model, named GYOLO, for coal gangue recognition with the aim of reducing model parameters, improving calculation speed, and reducing equipment requirements ...

A fast recognition method for coal gangue image …

Coal gangue recognition based on spectral imaging …

In this paper, the ensemble-learning algorithm XGBoost is combined with spectral imaging technology to realize the rapid and accurate identification of coal and coal gangue, which is of great significance to …

Cascade network for detection of coal and gangue in the …

The use of image processing to recognize coal and gangue is safer and more convenient than traditional coal washing methods, since it does not require complex equipment or water for heavy-media-based techniques, and is also preferable to other advanced recognition methods such as X-rays [3] or three-dimensional laser scanning [4].

Research on Coal Gangue Recognition Based on Multi …

First, the process of coal gangue symbiosis and the harm of gangue in top coal caving are analyzed, and the fundamental method of comprehensive treatment of gangue is put forward, which is the …

Integrated green mining technology of "coal mining-gangue …

In Tangshan Mine, there are four engineering problems, including the layout of multiple seam mining system, serious environmental damages caused by gangue accumulation and surface collapse, nearly 100 million tons of three under coal (coal trapped under buildings, water bodies, and railways) to be released, and the control accuracy of …

A fast recognition method for coal gangue image processing

A modified YOLOv4 model, named GYOLO, for coal gangue recognition is proposed with the aim of reducing model parameters, improving calculation speed, and reducing equipment requirements. This paper proposes a modified YOLOv4 model, named GYOLO, for coal gangue recognition with the aim of reducing model parameters, …

Coal gangue detection and recognition algorithm based on …

4.1 Design and implementation of coal gangue detection and recognition device. This study proposes an method for coal gangue detection and recognition on the basis of the DCN-YOLOv3 algorithm. Firstly, the method collects real-time video images of a conveyor belt operation through an industrial camera erected perpendicular to the …

Image feature extraction and recognition model construction of coal …

Grayscale processing of coal and gangue images. In the processing of color images, the three components of R, G and B should be processed respectively, but in fact they cannot reflect the ...

Gangue Source Reduction Technology and Process …

The precise identification of damp, sticky coal gangue; efficient jet nozzle separation; and process layout in a narrow, restricted space are essential technologies …

Field study on the improvement of coal gangue filling …

Large pieces of coal gangue were selected to fill the pond until the fill height was at the surface of the water. Ordinary coal gangue was used to fill the pond with a bulldozer until the height reached the …

Overview of Solid Backfilling Technology Based on Coal-Waste

China is the world's largest coal producer country. However, large-scale coal mining has led to severe environmental pollution issues such as surface subsidence and gangue piling up. The gangue discharging amount has ranked the first in the world and coal mine enterprises are facing enormous discharging reduction pressure. This paper …

Sensors | Free Full-Text | Research on Recognition of Coal and Gangue

Coal gangue image recognition is a critical technology for achieving automatic separation in coal processing, characterized by its rapid, environmentally friendly, and energy-saving nature. However, the response characteristics of coal and gangue vary greatly under different illuminance conditions, which poses challenges to …

Coal Gangue Recognition during Coal Preparation Using an …

working environment, intelligent coal gangue sorting equipment, especially coal gangue sorting robots, has received considerable attention in the industry [3–6]. Coal gangue ... applications in mineral processing. Hou [18] established a coal gangue separation system based on the difference between coal and gangue in their surface …

Research on coal gangue separation method based on dual …

Single and multiple self‐imaging with soft x rays (λ=4.48 nm) in a waveguide has been achieved for the first time. Images of a 2‐μm‐wide slit were produced by a hollow planar waveguide ...

A review of intelligent coal gangue separation technology …

In the process of pre-discharging gangue via the dual-energy X-ray coal and gangue sorting device, the pseudo-medium coal in the raw coal will be identified as …

Research on Coal Gangue Recognition Based on Multi-source …

The over-exploitation of resources caused by the increasing coal demand has resulted in a sharp increase in solid waste emissions mainly gangue, which has made the burden on the environment, economy, resources, and society of our country heavier. In order to achieve a balance between energy consumption and solid waste emission in the …

Research on coal gangue classification recognition method

Coal is currently one of the important industries in China's primary energy industry, and with the rapid development of the national economy and science and technology, the efficient and clean production of coal mines is the focus of coal mine development [].To get the purer coal, the gangue generated along with the coal needs …

A review of intelligent coal gangue separation technology …

Conventional coal gangue separation equipment, such as spiral separation equipment, heavy medium shallow trough separation equipment, and TBS …

A review of coal gangue identification research

Top coal caving is a process for the rational extraction of large amounts of coal resources. However, this process readily causes release of excessive amounts of gangue during the coal release process. The conventional technique, which involves visual inspection, is not only labor-intensive but also can introduce inaccuracies. Coal and …

How to Recycle and Process Coal Gangue: 7 Effective Ways

1 Coal gangue is crushed by a jaw crusher and ground by a ball mill. Raw materials are screened using a 100-mesh vibrating screen . 2 Mix raw materials (55% coal gangue and 45% iron tailings) to make particles with a diameter of 10-20 mm. 3 Put the formed CGC into a dryer, heat to 105°C, and dry for 1-2 hours.

Extraction of alumina from alumina rich coal gangue by a hydro …

1. Introduction. Coal gangue is an industrial solid waste produced by coal mining and processing [1–3].The average production of gangue accounts for 10–15% of raw coal production [4,5], making coal gangue one of the biggest solid wastes in China.At present, utilization ratio of coal gangue can reach about 60% in some countries.

Separating coal and gangue using three-dimensional laser scanning

1. Introduction. Gangue minerals accounts for between 15% and 20% of raw coal in China (Qian et al., 2007).Indeed, as coal production has increased, so has gangue generation; by the end of 2009, the total amount of gangue produced added up to 5.0 × 10 9 t, encompassing 40% of the total Chinese solid waste (Miao and Qian, 2009).The …

Sustainability | Free Full-Text | Utilization of Coal Gangue Aggregate

As a massive solid waste, the high value-added utilization of coal gangue has received more and more attention in China. This study focuses on the utilization of coal gangue aggregate in railway engineering for coal transportation passage. Coal gangue aggregate was employed as high-grade railway subgrade filler andprepared concrete for …

Experimental Study on the Compaction and Deformation of Filling Gangue

The coal mining technology of fully mechanized solid filling is an efficient and green mining method that integrates "sediment reduction" and "emission reduction." However, the discharge of wasted gangue and surface subsidence are controlled by the amount of wasted gangue used in filling mining and the compaction rate of gangue filled into a …