关键词: 超级铁精粉, 磁铁矿, 塔磨, 磁选

Abstract: The iron minerals in the iron concentrate powder of an iron mine in Chengde area of He‐ bei Province are mainly single magnetite. The total iron grade of the iron concentrate powder is 65.45%， and the magnetic iron grade is 65.00%. The mineral composition of the iron concentrate powder is single and the impurity content is low. The process of pre-magnetic separation (magnetic field intensity 160 kA/m) -tower mill grinding (P95=-0.038 mm) -two stage magnetic separation (first stage magnetic field intensity 320 kA/m，second stage magnetic field intensity 96 kA/m ) -elutriation concentration was adopted. The su‐ per iron concentrate with yield of 72.73%，iron grade of 71.69% and iron recovery of 79.21% can be ob‐ tained. The iron concentrate can be used as raw material for preparing lithium iron phosphate battery mate‐ rials with high added value，and the high quality and excellent use of iron concentrate can be realized. At the same time，the tailings produced during the test can be sold.

Key words: super iron concentrate powder, magnetite, tower grinding, magnetic separation