Crushing and grinding process for pre-selecting and recovering xenotime

A crushing and grinding process for pre-selecting and recycling xenotime comprises the following steps: firstly, feeding xenotime raw ore into a crusher for crushing treatment, then feeding crushed products into a vibrating screen I for primary screening, feeding oversize products of the vibrating screen I back to the crusher for repeated crushing, and feeding undersize products of the vibrating screen I into a vibrating screen II for secondary screening; oversize products of the vibrating screen II are fed into an X-ray sorting machine to sort out rough concentrate and discard tailings, the rough concentrate is fed into a semi-autogenous mill to be subjected to ore grinding treatment, then discharged materials of the semi-autogenous mill and undersize products of the vibrating screen II are fed into a vibrating screen III together to be subjected to third-time screening, oversize products of the vibrating screen III are fed back to the semi-autogenous mill to be subjected to repeated ore ...