辽西钒钛磁铁矿氧化球团制备实验  

Preparation of Vanadium Titano-Magnetite Oxide Pellets from Western Liaoning Province

作　　者：韩通 肖顺鑫 程功金 杨合 薛向欣 Han Tong;Xiao Shunxin;Cheng Gongjin;Yang He;Xue Xiangxin(School of Metallurgy,Northeastern University,Shenyang,Liaoning,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819

出　　处：《矿产综合利用》2023年第3期7-13,共7页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金辽宁联合基金项目(U1908226);国家自然科学基金青年基金项(21908020)。

摘　　要：这是一篇冶金工程领域的论文。以辽西钒钛磁铁精矿为原料制备球团,研究球团的预热特性和焙烧特性。结果表明,在900℃下预热15 min,预热球强度可达819 N;在较佳预热制度下,1100℃焙烧15 min,焙烧球强度达到了3020 N。该球团不难氧化,在900℃、15 min下,其氧化度达97%,且温度对氧化度的影响强于时间。随预氧化温度的提高,球团物相由磁铁矿和钛铁矿最终转变为赤铁矿和铁板钛矿。随着焙烧温度的提高,球团内晶体不断长大,气孔减少,结构更致密。This is a paper in the field of metallurgical engineering.Pellets were prepared from vanadium and titanium magnetite concentrates from Liaoxi,and the preheating characteristics and roasting characteristics of the pellets were studied.Results show that the strength of preheating ball can reach 819 N when preheating for 15 min at 900℃,and the strength of the ball reached 3020 N at 1100℃for 15 min under the optimum preheating system.The oxidation degree of the pellet is 97%at 900℃for 15 min,and the temperature has a stronger influence on the oxidation degree than time.With the increase of oxidation temperature,with the increase of preoxidation temperature,magnetite in the pellets changes into hematite and ilmenite into ferrobrookite.With the increase of calcination temperature,the crystal in pellet grows up,the porosity decreases and the structure becomes denser.

关 键 词：冶金工程 钒钛磁铁矿 氧化球团 预热 焙烧 抗压强度 

分 类 号：TD981[矿业工程—选矿]