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The effect of diameter and height of the inserted rod in a dense medium cyclone to suppress air core
Affiliation:1. R&D Tata Steel, Jamshedpur, Jharkhand, India;2. Fuels and Minerals Engineering Department, Indian School of Mines University, Dhanbad, Jharkhand, India;1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, No. 8 Xindu Road, Xindu Street, Chengdu, Sichuan 610500, China;2. Geological Exploration and Development Research Institute of CNPC Chuanqing Drilling Engineering Ltd, Chengdu, Sichuan 610056, China;3. Northeastern Sichuan Production Gas Plant of Sinopec Southwest Oil and Gas Field Co., Langzhong, Sichuan 637402, China;4. CNOOC Zhanjiang Co., Ltd., Zhanjiang, Guangdong 524057, China;1. Department of Pathology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India;2. Department of Pathology, Institute of Human Behaviour and Allied Sciences, New Delhi, India;3. Department of Pathology, PGIMER & Dr. RML Hospital, New Delhi, India;4. Department of Neuroradiology,All India Institute of Medical Sciences (AIIMS), New Delhi, India;5. Department of Neurosurgery, All India Institute of Medical Sciences (AIIMS), New Delhi, India;1. School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China;2. Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education of China, Chongqing University, Chongqing 400044, China
Abstract:Studies were carried out by suppressing the air core in a 100 mm DMC using a metal rod inserted through the spigot. The effect of the diameter of the inserted rod and its height of insertion on the Ep of the cyclone was studied. A spigot blocking ratio of 0.4 with 60% of free VF clearance gave the best separation efficiency. Multiphase CFD studies showed that the improved performance of the cyclone was because of (i) higher tangential velocity and hence higher centrifugal force acting on the particles (ii) lower radial and axial velocities at the VF reducing misplacement.
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