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· 1 School of Mechanical Electronic & Information Engineering, China University of Mining & Technology, Beijing 100083, China; [email protected] 2 Mine Robot Research Center, China University of Mining & Technology, Beijing 100083, China; [email protected] * Correspondence: [email protected]
contact usThe invention relates to an automatic separator of coal gangue, which comprises a raw material feeding copper, a coal receiving copper, a gangue receiving copper, a conveying-belt conveyor, an identification and separation controlling mechanism and an executing mechanism, wherein the conveying-belt conveyer is arranged among the raw material feeding copper, the coal receiving copper and the ...
contact usGangue 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 ...
contact usAbstract Gangue from underground separation of coal can directly be used for filling mined out areas, saving transport capacity and reducing the amount of waste polluting the environment above the ground. We introduced a structure and operating principle of an underground direct-impact sieving device by which a separation experiment was carried out.
contact us· Separation of coal and gangue. 3D laser scanning technology. Laser triangulation method. Laser beam segment. 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 ...
contact usTherefore, the selective crushing and separation of coal and gangue was preliminarily tested through the testing machine so as to obtain the selective crushing pressure distribution curves of coal and gangue, and then the curves were drawn based on its numerical distribution. The two curves drawn in this way were placed in the same coordinate ...
contact uscoal–gangue separation system with computer vision, in which industry cameras and computers are used to identify whether the object is coal or gangue through the pattern recognition technology. Ma et al. proposed the coal gangue on-line recognition and automation selection system with digital image processing technology [4].
contact usWe consider the problem of automatically separating coal and coal gangue based on computer vision and design a coal and coal gangue separation system framework based on video. Grayscale histogram, fractal dimension and energy value are extracted as ore features. Then we design a 4-layer Levenberg Marquart BP Neural Network to implement multi-feature fusion.
contact us· A new on-line identification and automatic sorting system of coal and gangue is designed by integrating embedded technology and fieldbus technology. On line identification and automatic separation system of coal gangue. The principle block diagram of coal block and gangue online identification and automatic separation system is shown in Fig. 1.
contact usH-CSS Series Teetered Bed Separator. 1 t roduction of TBS. The teetered bed slurry separator is mainly composed of material feeding and spreading device, disturbing separating room, upwardflow injection system, cleaned coal flow guiding system, density detecti on device, gangue discharging gate control system and so on.. 2.Features of TBS. 2.1.
contact usRecognition and separation of Coal/Gangue are important phases in the coal industries for many aspects. This paper addressed the topic of Coal/Gangue …
contact usThe coal and gangue recognition model based on model pruning can accurately capture the surface differences between coal and gangue due to their different hardness,and the reflec- tion generated by vitelline composition at the truncated surface of coal can be used as a reliable basis for identifying coal. The calculation amount and model size ...
contact usCoal gangue identification flowchart. Technical features ※ Wide processing size range: It can handle 30- 600mm raw coal. The upper limit of separation is 600mm and the lower limit is 30mm. ※ High separation accuracy: The rate of gangue removing is over 95%, the rate of coal in gangue is less than 2%, and the separation effect is significant.
contact usCoal gangue could been separated from the lump coal. To improve operation speed, the high performance microcontroller(DSP) was used as the core processor of system. It can achieve the real-time automatic separation of coal gangue. It provides a new technology for separation of coal gangue.
contact usSeparation between Coal and Gangue based on Infrared Radiation and Visual Extraction of the YCbCr Color Space . ... for coal and gangue samples and then extracted features such
contact us· Abstract: Coal gangue separation is an essential part of the development and utilization of coal. A method of separating gangue from coal based on the density by calculating volume and weight of the ores which is measured by the designed equipment was given in this paper.
contact us· However, when the coal gangue particles are too small, particle agglomeration hinders the increase in surface area. In addition, liquid–solid separation becomes difficult after acid leaching. Therefore, coal gangue with a size of 74 μm was selected as the appropriate size for the acid leaching. 3.2.2. Effect of liquid–solid ratio
contact usIn 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 industry, coal gangue separation can improve ...
contact usSeparation of coal and gangue is an important procedure in coal production. Present separating technology has such defects as low efficiency, high pollution, high energy consumption, and high cost. Based on the analysis of grey value of digital images, we prompt a new separation …
contact usCoal reverse flotation. Part I: Separation of a mixture of subbituminous coal and gangue minerals. Minerals Engineering, 2006. Janusz Laskowski. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.
contact us· Notably, coal gangue contains carbon, which can be used as a reductant in reduction roasting. Therefore, based on the progress of previous research, we have proposed an innovative recycling of red mud through co-roasting with coal gangue for separation …
contact usTitle: Separation of gangue from coal based on histogram thresholding, Author: IJTEEE, Name: Separation of gangue from coal based on histogram thresholding, Length: 4 pages, Page: 2, …
contact us· 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.
contact usThe process for coal separation includes two steps of size grading and oversize raw coal separating. A size range is obtained through size grading, then the obtained raw coal is separated by a sensor system, and coal briquettes with high impurity contents are blown into an impurity chamber through high-speed compressed air, thus improving the separating accuracy and efficiency.
contact usIn coal production, the raw coal contains a large amount of gangue, which affects the quality of coal and pollutes the environment. Separating coal and gangue can improve coal quality, save energy, and reduce consumption and make rational use of resources. The separated gangue can also be reused. Robots with computer vision technology have become current research hotspots due to simple ...
contact us· Based on the separation and backfilling system of coal and gangue, the mineral material impact experiments were conducted utilizing the hardness difference between coal and gangue according to the uniaxial compression experiments. The broken coal and gangue particles were collected and screened by different size meshes. The particle size distributions of coal and gangue …
contact us· The density of coal gangue is higher than that of coal. Jameson et al. [,,,, ] studied the gas-solid fluidized bed and achieved a good separation effect of coal gangue. However, the separation equipment is bulky and requires high pulse airflow. The hardness of coal gangue is greater than that of coal.
contact us· The separation of coal and gangue is an important aspect of coal production, which can improve coal quality, save energy, reduce consumption, and enable the rational use of resources. At present, manual selection remains widely implemented, but the working environment is harsh, labour intensity is high, and efficiency is low.
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