矿产综合利用Issue(6)：44-49,6.DOI:10.3969/j.issn.1000-6532.2017.06.010
内蒙古某高硫高碱度磁铁精矿球团焙烧工艺研究
Research on Pellets Roasting Process for a High-sulphur and High-basicity Magnetite Concentrate from Inner Mongolia
摘要
Abstract
High-sulfur and high-basicity magnetite from Inner Mongolia as raw material was chosen for laboratory pelletizing test and lots of roasting tests.The results show that the extension of the preheating and roasting time both can improve the compressive strength of the pellets,and the preheating time had the greatest influence on the qualified rate of finished pellets;the suitable preheating temperature is beyond 900℃ and 1000 ℃,the suitable roasting temperature is beyond 1200℃ and 1280 ℃,the high the temperature,the better the strength;adding an air blower in the preheating section can effectively reduce the preheating time to 18 min,and every 50 g pellets should have more than 0.565 L/s ventilation rate;improve the air flow performance in the pellets can effectively reduce oxidation time;under the condition of equal weight,the roasting effect of big balls is better than small balls,the suitable particle size range is 11-16 mm.关键词
高硫磁铁精矿/球团试验/焙烧/鼓风预热/通风量Key words
High-sulfur magnetite concentrate/Pelletizing test/Roasting/Blast preheating/Ventilation rate分类
矿业与冶金引用本文复制引用
张攀,杨大兵,李乾坤,甘杰,邹冲..内蒙古某高硫高碱度磁铁精矿球团焙烧工艺研究[J].矿产综合利用,2017,(6):44-49,6.基金项目
国家重大科学仪器设备开发专项计划“铁矿石成分实时在线监测仪器的应用开发及项目实施”(2013YQ04086107) （2013YQ04086107）
