What is the dry grinding and separation process of an iron ore?

The equipment included in the iron ore dry grinding and separation process includes: iron ore beneficiation vertical mill, multi-stage lifting air separator and multi-stage magnetic roller concentrator. The feeding port of the iron ore beneficiation vertical mill is equipped with a feeding mechanism, and the discharge port is connected to the feeding port of the multi-stage lifting air separator through the ore particle conveying mechanism. The powder outlet of the multi-stage lifting and air separator is connected to the powder collection device, and the outlet of the multi-stage lifting and air separator is connected to the inlet of the multi-stage magnetic roller concentrator through the discharge pipe. The concentrate outlet of the multi-stage magnetic roller concentrator is connected to the concentrate collection device, the tailings outlet of the multi-stage magnetic roller concentrator is connected to the tailings collection device, and the medium ore outlet of the multi-stage magnetic roller concentrator is connected to the iron ore through a return conveying mechanism. The feeding port of the mineral processing vertical mill.

(a) Dry grinding: grind the crushed iron ore into a mixture of ore particles and ore powder through an iron ore beneficiation vertical mill;

(b) Air separation and classification: The mineral powder and mineral particles are separated through a multi-stage lifting air separator, and then the separated mineral powder is collected through a powder collecting device;

(c) Dry multi-stage magnetic separation: The ore particles are separated by multi-stage magnetic separation through a multi-stage magnetic roller concentrator and separated into high-grade concentrate, general-grade medium ore and low-grade tailings. The ore and tailings are collected, and the middlings are returned to the dry vertical mill for regrinding.