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Underground mining slurry transportation viability 被引量:2
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作者 Binay Samanta Arun Baran Samaddar 《International Journal of Coal Science & Technology》 EI 2019年第3期430-437,共8页
Underground mining requires lot of water pumping to surface which increases cost. Because of safety, support, ventilation and environment costs underground mines are closing down gradually all over the world. This inn... Underground mining requires lot of water pumping to surface which increases cost. Because of safety, support, ventilation and environment costs underground mines are closing down gradually all over the world. This innovative paper is based on method studies by computer programming with realistic data. With development of electronic control systems, coal water slurry mix can be remote controlled for transport to surface Separator-bunker. Main consumers need powdered coal/mineral like thermal power stations, for feeding to Fuel Burners of boilers, generating power or in steel plants for feeding into coke ovens to make hard coke for charging into Blast Furnaces for making pig iron. Feed for coal washeries also require crushed coal and output of washed coal as slurry can be sent to coke ovens of steel plants directly. Production from mine faces should be taken through lump-breaker and conveyed to a mixing chamber, near panel sump, from where adequate capacity slurry pump will propel up to pit-top. The projected financial benefit can be several millions of Rupees per year, as compared to road, rail conveyor or winders is shown, by run of a computer program in Java, with realistic cost figures from mines. 展开更多
关键词 Electronic control SLURRY PUMPING Continuous MINER lump-breaker Panel SUMP Mixing CHAMBER
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固态断路器中快恢复二极管的反向恢复模型 被引量:1
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作者 彭振东 任志刚 王华敏 《船电技术》 2012年第3期55-57,共3页
本文简要阐述了固态断路器中快恢复二极管的反向恢复问题,详细分析了二极管的关断过程,建立了二极管反向恢复的集总电荷模型,并在Matlab\Simulink中进行了实现。仿真结果和产品数据手册保持一致,验证了模型的有效性和实用性。
关键词 固态断路器 快恢复二极管 反向恢复 集总电荷模型 MATLAB/SIMULINK
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混合断路器用大功率二极管高频特性研究
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作者 尹小恩 《船电技术》 2011年第7期79-81,共3页
本文以混合断路器用大功率二极管为研究对象,详细分析了功率二极管的正向导通过程,建立了正向恢复的集总电荷模型,对影响二极管正向恢复过电压的相关参数进行了探讨,实验结果证明了理论分析的正确性。
关键词 混合断路器 大功率二极管 正向恢复 集总电荷模型
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