Study on Resource Utilization Technology of Typical Copper Tailings from Panxi Region

In order to solve the problems of typical tailings resource utilization from Panxi region, the technology of comprehensive utilization of the low-grade tailings was studied. Based on the research results of mineralogy of tailings process, the technical route of "floating-magnetic-gravity echelon recovery of useful mineral——silicon fertilizer from tailings" suitable for the tailing property is determined. On the basis of the recovery and utilization of valuable elements, the hard-to-use tailing resources are transformed into mica concentrate withyield of 11.78%、K₂O grade 7.77%、recovery rate of 25.92% and silicon fertilizer products with effective silicon more than 40%. The tailings can be reduced by 64.66%, thus realizing the resource recovery and reduction of tailing.