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| Optimizing Ore Blending Technology for 550m2 Sintering Machine |
| ZHAO Zhi-xing1,AN Gang2,PEI Yuan-Dong1,ZHAO Yong1,PAN Wen1 |
（1. Shougang Research Institute of Technology, Beijing 100043, China
2. The Sintering Plant of Shougang Jingtang, Tangshan 063200, Hebei, China） |
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Abstract The research on optimizing ore blending for 550m2 sintering machine in Jingtang of Shougang was carried out. Firstly, based on the condition of iron ore resourse in Shougang, sintering properties of various ores, especially the high temperature properties were researched, and basic structure of ore blending was fixed according to the mutual complementary properties of assimilation and liquid phase fluidity among Australia ore, Brazilian ore and domestic concentrates, that was Australian ore (50%-60%)＋Brazilian ore (40%-30%)＋domestic concentrates (about 10%). Secondly, nine groups of ore matching schemes were designed and sintering pot tests were carried out, and then the starting scheme of 550m2 sintering machine was obtained: ore from southern Brazil (20%) + ore from northern Brazil (10%) + semi-limonite (20%) + limonite ore (35%) + domestic concentrates (15%). Thirdly, experiment of optimizing parameters of optimizing basicity, lime ratio, water addition and bed depth were carried out, and 9 groups of ore matching schemes were designed. The results show that parameters fit for Jingtang currently are as follows: binary basicity is 1.90-1.95, lime ratio and water addition is 5% and 7.0% respectively; sintering bed should increase to 800mm gradually. At last, Jingtang sintering plant was put into production successfully and yields stably, with the bed depth at 800mm and advanced sintering indexes.
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Received: 16 December 2010
Published: 09 October 2011
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2011, Vol. 46 
