高品位攀精矿烧结试验研究

Sintering Test of High Grade PANZHIHUA Concentrates

针对攀钢钒钛磁铁精矿品位提高的情况,在实验室进行了高品位攀精矿烧结试验研究。结果表明,高品位攀精矿烧结性能较差,对烧结矿转鼓强度、成品率及冶金性能有不利影响。采用适当提高混合料水分和配碳量,提高料层高度、提高碱度、铁精矿预先制粒、返矿预润湿等技术措施,均可以有效地强化高攀精烧结过程,改善高攀精烧结矿的矿物组成和结构,从而提高烧结矿的转鼓强度和成品率,改善其冶金性能。采用高品位攀精矿替代进口矿烧结是可行的。

Pointed to the case that the grade of PANZHIHUA concentrates was increased, the laboratory test with high grade concentrates was conducted. The results show that the sintering ability is poor, and will possess unfavorable effect on sinter tumbler strength,product rate and metallurgical property. The measurements such as increasing mix moisture and carbon rate,increasing layer depth and sinter basicity,pre-granulation and pre-wetting etc. can effectively improve sintering process, modify sinter mineral composition and structure, and then increase the tumbler strength and product rate, modifying its met.,dlurgical property. And also it is practicable that using high grade PANZHIHUA concentrates to replace part of import ores.