Experimental Investigation on Influence of Important Parameters in Centrifugal Granulation for MBFS

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The difficulties of molten metallurgical slag heat recovery caused by low thermal conductivity and high enthalpy are analyzed.Centrifugal granulation is an environment-friendly process in treating the slag. The existing researches on centrifugal granulation are concentrated in the shape, size and mass distribution of slag particles. The relations between flight distance of slag, divorced speed of slag and outside speed of cup and rotary speed and rotary cup diameter were studied. The experimental results indicate that flight distance is farther from the cup and the speeds increase with increasing rotary speed. While rotary speed reaches 1000 rpm, divorced speed and flight distance of slag are almost invariant. When rotary cup diameter increases, the flight distance and the speeds increase simultaneously. Flight is reasonably simplified as:uniform motion in horizontal direction and motion of free falling body in the vertical direction,The experimental results have certain guiding significance to design of heat recovery equipment.

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202-205

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June 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] WANG Hai-Feng, ZHANG Chun-Xia, QI Yuan-Hong. Status and Development Trend of Treatment and Heat Recovery Technology for Blast Furnace Slag [J]. China Metallurgy, 2007, 17(6): 53~58.

Google Scholar

[2] Pickering S J, Hay N, Roylance T F and Thomas G H. New Process for Dry Granulation and Heat Recovery from Molten Blast-Furnace Slag[J]. Ironmaking and Steelmaking, 1985, 12(1): 14~20.

Google Scholar

[3] Mizuochi T, Akiyama T, Shimade T. Feasibility of Rotary Cup Atomizer for Slag Granulation [J], ISIJ International, 2001, 41 (12): 1423~1428.

DOI: 10.2355/isijinternational.41.1423

Google Scholar

[4] Purwanto H, Mizuochi T, Akiyama T. Characteristics of Glass Beads from Molten Slag Produced by Rotary Cup Atomizer [J]. Materials Transactions, 2004, 45 (12): 3286~3290.

DOI: 10.2320/matertrans.45.3286

Google Scholar

[5] YU Qing-Bo, LIU Jun-Xiang, DOU Chen-Xi and HU Xian-Zhong. Dry Granulation Experiment of Blast Furnace Slag by Rotary Cup Atomizer[J]. Journal of Northeastern University(Natural Science), 2009, 30(8): 1163~1165.

Google Scholar

[6] YANG Zhi-Yuan, ZHOU Yang-Min, YAN Zhao-min and YI Chui-Jie. Experimental Study of Dry Centrifugal Granulation of Molten Blast Slag [J]. Science Technology and Engineering. 2009, 9(30): 7257~7260.

Google Scholar

[7] Dou Chen-Xi Yu Qing-Bo Liu Jun-Xiang and HU Xian-Zhong. The criterion equation for rotary cup granulation of blast furnace slag [J]. Energy for Metallurgical Industry. 2009, 28(2): 19~2.

Google Scholar

[8] Chen Deng-Fu, Zuo Xiang-Jun, Wen Liang-Yin, Dong Ling-Yan and Qiu Gui-Bao. Methods and problems of heat recovery from molten blast furnace slag [J]. Techniques and Equipment for Environmental Pollution Control , . 2006, 7(7): 133~137.

Google Scholar

[9] YU Qing-Bo, LIU Jun-Xiang, HU Xian-Zhong and QIN Qin. Simulation Experimental Research of Granulation Process for Iron Slag [J]Iron & Steel. 2009, 44(4): 82~85.

Google Scholar

[10] DAI Xiao-Tian, QI Yuan-Hong, ZHANG Chun-Xia, XU Hai-Chuan, YAN Ding-Liu and HONG Yi-Cheng Analysis of Blast Furnace Slag Quenching Dry Granulation Process[J]. Journal of Iron and Steel Research. 2007, 19(5): 14~19.

Google Scholar