青钢董家口新区开炉烧结优化配矿研究

Research on Optimization of Sintering Ore Proportioning for Blowing-in Preparing of Blast Furnace of the New District in Dongjiakou of Qingdao Steel

选取当前主流6种巴西和澳大利亚矿粉,针对青钢董家口新区1 800 m^3级高炉进行烧结杯实验和烧结矿的冶金性能检测。结果显示,配比为"20%巴粗粉-15%PB粉-15%巴卡粉-25%扬迪粉-25%FMG特粉"的烧结矿在强度、粒度组成、利用系数等方面的综合性能较好。该配比不同碱度的热态冶金性能检测结果显示,当碱度为1.9时,综合冶金性能较好,满足1 800 m^3级高炉的开炉和生产需求。

Six kinds of current mainstream ore from Brazil and Australia were selected to experiment by sintering cup aml metallurgical properties testing of sinter, which was used to prepare for the blast furnace blowing-in of the new district in Dongjiakmt of Qingdao Steel. The resuh of sintering cup experiments showed that the sinter, the ratio was ＂20% SSFTT- 15% PB Fine-15% SFCJ- 2.5% Yandi Fine-25% FMG Special Fine＂, had the better combination property, such as the strength, the grain camposition, the utilization coeffieient, and so on. The results of metallurgical properties testing of different basicity sinter of the above ratio showed that the combination hot metallurgical property of the sinter was better, when the basicity was 1.9. And it couht meet the requirement of blowing-in and production of the 1 800 m3 blast filrnace.