攀钢超高碱度烧结生产实践

来源期刊：钢铁钒钛2010年第2期

论文作者：何木光 张义贤 饶家庭 李玉洪

文章页码：81 - 87

关键词：烧结； 钒钛磁铁矿； 碱度； 烧结矿； 强度； 产量

Key words：sintering； vanadic titanomagnetite； alkalinity； sinter； strength； yield

摘    要：通过开展钒钛磁铁精矿超高碱度烧结生产实践,探索出高钛型钒钛磁铁矿超高碱度烧结生产的特点。在工艺上应强化生石灰和活性灰的使用,提高熔剂熟料比,采取厚料层,慢机速的方针,焦粉与无烟煤-3mm粒级比例控制在80%和70%左右适宜,烧结矿FeO含量控制在7.7%,水分稳定在7.2%~7.3%。同时,进行了磁辊布料、燃料二次分加、双斜式点火器保温炉等设备技术改造,为改善超高碱度烧结经济技术指标创造了条件。结果表明,烧结结晶条件改善,矿物组成优化,冶金性能改善,促进烧结矿强度的提高。需要注意的是,超高碱度烧结生产对烧结矿稳定率指标影响较大,尤其是一期、二期烧结矿R0稳定率下降了4.43、3.09个百分点,TFe稳定率也分别下降了2.1、2.46个百分点,有待进一步技术攻关解决。

Abstract: Through Panzhihua V-Ti magnetite concentrate ultra-high basicity sintering production practice,the characteristics of ultra-high basicity sintering production are explored.The process should strengthen the use of quick lime and activity of ash,improve the agglomerate ratio of solvent,and take thick material layer and the principle of slow-speed machine,and the ratio of grain size of less than 3 mm for coke and anthracite can be controlled between 70% to 80%,FeO content of sintering ore can be controlled about 7.7%,Suitable moisture is between 7.2 %to 7.3%.At the same time,the improvements on the burden distribution of a magnetic roller and the fuel secondary sub-plus and pairs of oblique igniter furnace are carried out,which will create conditions for improving the technical and economic indices of the high basicity sintering.The results showed that sintering crystallization conditions are improved,mineral compositions are optimized,metallurgical performance is improved,and the strength of sinter is improved.It should be noted that production of ultra-high basicity sintering greatly impact on the stability index of sinter,in particular,the R0 stability rate of No.1 and No.2 period sinters has declined by 4.43 and 3.09 percentage points,the stability rate of TFe content of sinter decreased by 2.1 and 2.46 percentage points,which needs further technical breakthrough.