铁矿粉颗粒特性对其烧结制粒性的影响

doi:10.13228/j.boyuan.issn0449-749x.20140333

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Abstract Learning granulating ability of iron ores is the base of subsequent parameter optimization aiming at efficient granulation when sintering blend was granulated. Clarifying the granulation of different iron ores and the influence of particle characteristics was a valuable subject that worth further research. Laboratory granulation test was conducted to study the effect of particle characteristics knowing as circularity， porosity， wettability and size distributions on granulation behaviour of iron ore. Granulation estimation of sintering blend by combination of coarse and fine particles was carried out on the base. Results gained are summarized as follows. Circularity and porosity had negative effect on granulation of iron ore while[cosθ]was positive. When iron ore that with complex size distributions was granulated， equivalent surface area was the main influencing factor for coarse particles larger than 1 mm that was negatively related， and the ratio of adhering fines to intermediate [(R<0.25 mm/0.25～1.00 mm)] was the main factor for fine particles smaller than 1 mm that was positively related. Granulation ability of sintering blend was estimated by combining granulation of coarse and fine particles with and their proportioning， good verification was achieved with designed schemes， suggesting an effective predicting method for blend granulation.

Received: 03 June 2014 Published: 28 April 2015

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TF521

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	Articles by authors
	WU Qing-Li
	YU Ti-Fei
	ZHU Juan

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WU Qing-Li,YU Ti-Fei,ZHU Juan. Influence of particle characteristics on the granulation of iron ores in sintering process[J]. Iron and Steel, 2015, 50(5): 19-25.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20140333 OR http://www.chinamet.cn/Jweb_gt/EN/Y2015/V50/I5/19

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