攀钢密地选矿厂总尾矿深度回收方案的探讨

Discuss of the Deep Recovery Scheme of the Tailings in Midi concentrator of Panzhihua Iron and Steel Corporation

以密地选矿厂的选铁尾矿经选钛厂回收钛精矿后的大井尾矿为原料,进行有用矿物再回收工艺流程的探讨。根据原料性质及主要工艺流程的选别试验结果,确定采用两段强磁—分级擦磨—浮选的工艺流程进行钛精矿的综合回收。研究结果表明,要对密地选厂的尾矿中的钛铁矿进行深度回收利用,必须解决设备大型化以提高处理能力和节省建厂占地面积、及原料脱药和单体解离的问题。并在工艺流程中增设擦磨工艺,可以达到提升产能规模、提高资源综合回收利用率的效果。

The Dajing tailing,which was obtained after the recovery of titanium concentrate from the tailings of iron ore dressing of Midi concentrator, was used as raw materials to investigate the reasonable technological process to recover the useful minerals. According to the properties of the raw materials and the test results of the main technolog- ical process,the flowsheet of two-stage high-intensity magnetic separation-classsification and chafing-floatation was adopted to recover the titanium concentrate. The results show that for the deep recovery of the titanium in the tailings of Midi concentrator,large-scale equipements must be adopted to improve the treatment ability, save the earth and solve the problems of drug-eluting of materials and liberation. Meanwhile, the chafing technology should be added for the improvements of capacity scale and the recovery of mineral resources.