550m^2烧结机优化配矿技术  

Optimizing Ore Blending Technology for 550m^2 Sintering Machine

作　　者：赵志星[1] 安钢[2] 裴元东[1] 赵勇[1] 潘文[1] 

机构地区：[1]首钢技术研究院,北京100043 [2]首钢京唐公司烧结厂,河北唐山063200

出　　处：《钢铁》2011年第9期11-16,共6页Iron and Steel

基　　金：国家科技支撑计划项目资助(2006BAE03A01)

摘　　要：针对首钢京唐550 m2烧结机的投产进行了优化配矿研究。首先,根据首钢铁矿粉资源,对多种铁矿粉的烧结性能,尤其是其高温特性进行了研究;根据澳洲矿、巴西矿和国内精粉在同化性与液相流动性能方面高低互补的配矿原则,确定了矿粉搭配结构的基本范畴,即澳粉(50%~60%)+巴西粉(40%~30%)+适量地方粉(10%左右);然后,根据铁矿粉烧结性能研究结果,设计了9组优化配矿方案,并进行了烧结杯试验,从而确定了开机方案:巴西南部粉(20%)+巴西北部粉(10%)+半褐铁矿(20%)+褐铁矿(35%)+地方粉(15%);再者,进行了碱度、白灰配比、水分、料层等烧结工艺参数的优化试验。烧结杯试验结果表明,适合当前京唐条件下的工艺参数为:二元碱度1.90~1.95,白灰配比5%,水的质量分数控制在7.0%;料层可逐步提高至800 mm。最终,首钢京唐烧结厂顺利投产并稳定生产,料层厚度达到800 mm,烧结各项技术指标先进。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.

关 键 词：铁矿粉 烧结 厚料层 优化配矿 工艺参数 

分 类 号：TF046.4[冶金工程—冶金物理化学]