钒钛磁铁精矿复合烧结参数优化研究

针对高钛磁铁精矿烧结存在的烧结矿强度较低、返矿率高、产量低等问题,采用了复合烧结工艺并进行了参数优化试验。结果表明,对综合指标影响最大的为混合料水分,其次为料层厚度。与基准相比,最优方案的烧结利用系数提升20%以上,烧结矿强度、成品率分别上升3个百分点,5个百分点以上,烧结矿的铁酸盐体积含量增加4~5个百分点,烧结矿冶金性能得到不同程度改善。

Parameters Optimization of Composite Sintering Titanium Magnetite Concentrate

Composite sintering process had been investigated on the high titanium magnetite concentrate in order to address the issues of low-strength,high-return-rate and low-yield of sinter,adopted.It is found out that mix moisture has the greatest effect on the integrated index,followed by height of material layer.Compared with that of referenced sintering process,utilization coefficient with optimal sintering increases by more than 20％,and sinter strength and product rate increase by 3％ and 5％,respectively.The volume fraction of ferrite in sinter increases by 4％ ～ 5％ and metallurgical properties of sinter is improved at the different degrees.