Accortling to the characteristics of concentrate, the authors analyse the reasons why the iron grade of roasted magnetic separation concentrate is not high.

从精矿性质特点着手，分析了酒钢选厂焙烧磁选精矿铁品位不高的原因和主要影响因素。

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In this paper, the necessity of increasing and optimizing the grade of iron concentrate is set forward, and the possible technique way and research thinking are also introduced.

本文从宏观角度出发阐述了提高和优化铁精矿品位指标的必要性、可能的技术途径及优化研究的思路。

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Drum separator cannot produce high-grade iron concentrate because it cannot remove the locked particles and gangue in the agglomeration formed in the process of magnetic separation.

永磁筒式磁选机由于无法将磁团聚中夹杂的连生体和单体脉石有效地剔除，所以很难获得高品位精矿；

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