Aiming at problems including low content of magnetic iron, fine dissemination size and high content of ferrous silicate in processing of the amphibole-type primary ore in Yuanjiacun Iron Mine, an experimental study was carried out by adopting a pre-concentration process consisting of fine crushing plus dry magnetic pulley separation and a roll grinding plus wet magnetic separation. The pre-enriched concentrate was then processed with a flowsheet including a three-stage grinding, a three-stage low-intensity magnetic separation and a reverse flotation, resulting in an iron concentrate grading 65.66% TFe at 49.31% recovery, with the yield of 21.45%. It is shown that iron resource can be utilized efficiently.

Yuanjiacun Iron Mine  /  amphibole-type primary ore  /  dry magnetic pulley separation  /  roll grinding  /  wet magnetic separation  /  magnetite  /  magnetic separation  /  reverse flotation