- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
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They analyzed the effects of different mining heights on coal dust concentration in the breathing zone and calculated the optimal dust removal wind speed for a mining height of 6 m[17]. Ren et al. developed a spraying device for wet dust suppression and installed it on the rocker arm of a shearer. The dust produced during …
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Harnessing appropriate technology for use in the mining industry could go a long way towards minimising on-site wastes. The purpose of this paper is to review the progress made towards pollution and waste minimisation by the mining industry. The paper examines certain methods of pollution control used for air, land, water, tailings, sulphur …
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The average removal rate of total and respirable dust could reach up to 95.1% and 96.1%, respectively, at manned working areas in the tunnel. Research results show that the dust suppression technology of the forcing air curtain is an effective method of dust control in fully mechanized rock tunnelling faces.
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To reduce the impact of high-concentration RD on the physical and mental health of miners, numerical simulations were conducted on the coupling movement law of airflow-RD under the condition of cutting-advancing support dust sources and the distribution characteristics of the spray field in the mining face based on the …
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This work provides historical information and examines changes in the methods and equipment used in gold recovery and processing operations. Alluvial gold recovery methods, mainly based on gravity separation combined with mercury (amalgamation), have been applied since the early days of mining. Historically, mining gold from the …
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After the activation of blowing–spraying synergistic dust collectors at the front and rear drums of the shearer, the respirable dust concentration at the place of the shearer driver's location diminished to 19.7 mg/m 3 and the dust removal rate became 90.3%, indicating an effective dust removal.
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Dust prevention technology for fully mechanized mining face in difficult water injection seam; Shotcrete dust control technology in mines; Physical and chemical dust removal technology in the mining and transportation process of metal and non-metal mines; Online continuous monitoring and individual monitoring technology of mine …
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Flooded-bed scrubbers were initially used with blowing face ventilation systems in underground gassy coal seams to help remove dust being blown over ... With the development of remote control technology for continuous mining machines, flooded-bed scrubbers were also adopted on exhaust face ventilation systems for use in extended …
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Some researches have also been conducted on spraying dust reduction technology in the mining face with large mining heights. For example, Chen et al. [16] carried out atomization characteristics experiments on six types of nozzles commonly used for spraying dust reduction in the mining face.
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The technology led to a 59.5% dust removal efficiency in Zhangcun coal mine, which is much higher than the dust removal efficiency of the water spray dust reduction. The efficiency of total mine dust in Shanjiaoshu coal mine reached as high as 72%, and the efficiency of respirable mine dust reached 67%.
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The ventilation and dust removal method was considered one of the most effective measures for dust control in mining faces and tunnels. Local ventilators were often used for ventilation and dust removal in the excavation tunnels of …
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Mist Removal Solutions for the Mining Sector. Airbiotics. Drone Software Supplier. Airtight Solutions. ... Global Road Technology. Dust Control, Erosion Control, Water Management and Soil Stabilisation Solutions for the Mining Sector ... Escape Chutes and Deployment Systems for Mining Machines. Innovative Mining and Engineering Solutions.
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A variety of dust control methods are often applied in coal mines, among which the application of wet scrubbers has proven to be an efficient technology for the removal of dust in airstreams, rather than diluting or confining the dust. In this paper, a wet scrubber design was developed. Based on a self-designed experimental test platform, …
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Model experiment is one of the research methods for the fundamental theory of coal mine dust control. To address the current deficiencies in experiment development for research on dust migration rules, a scaled model for dust dispersion in a fully-mechanized mining face was constructed based on the design prototype of the 25211 …
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China had also developed mining dust collectors. Coal-seam water injection, spray dust reduction, dust removal, mining dust remover, and other technologies now have relatively mature application systems [] . Since then, underground dust prevention tech-nology for coal mines has continuously developed in automation …
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Machine-mounted active explosion barriers. Explospot's machine-mounted active explosion barriers are automatic explosion suppression systems installed on underground mechanised cutting machines. Designed for coal applications, they stop methane gas and dust explosions at the cutting face.
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