太钢袁家村铁矿选矿技术研究及工业应用

摘要

In view of the properties of iron ore from Yuanjiacun Iron Mine and technical puzzles for mineral processing therein, experimental study on its beneficiation technology was conducted with a proper flowsheet obtained. The proposed flowsheet consists of a one⁃stage of crushing, a semi⁃autogeneous grinding, a ball grinding, a low intensity magnetic separation, a high intensity magnetic separation, a regrinding and a reverse flotation with cationic collector. The flowsheet is relatively short without desliming step. With CY, a slime⁃endurable and low⁃temperature adaptable collector, iron concentrate with TFe grade and recovery exceeding 65% and 73%, respectively, can be prepared from low temperature flotation.%针对太钢，家村铁矿的矿石性质及存在的选矿技术难点，开展了选矿技术研究，进行了工艺流程设计。在大量试验研究的基础上，推荐采用一段破碎⁃半自磨⁃球磨⁃弱磁⁃强磁⁃再磨⁃阴离子反浮选流程处理，家村铁矿，该工艺流程短、无需脱泥，选用耐泥、低温捕收剂CY，低温条件下浮选可得到品位65％以上、回收率大于73％的铁精矿。