| As the value of Pt and Re in a spent petroleum reforming catalyst isgreat and their resources are scarce, the recovery of Pt and Re is of great significance. Recovery processes of the spent petroleum reforming Pt-Re catalyst include hydrometallurgical, pyrometallurgical and hydro-pyrometallurgical combined process. Hydrometallurgical process is the main recovery process due to its advantages of simple technology and short flow, however, the environmental protection issue is prominent. Pyrometallurgical process is not economical for treating petroleum reforming spent Pt-Re catalyst. Hydro-pyrometallurgical combined process is just in experimental stage. Therefore, developing a new, efficient and clean recovery process via the optimization of processes combination is an important way to improve resource comprehensive utilization. |
