The rrecycling of platinum group metals from spent catalysts generally includes three major processes: pretreatment, rough extraction and refining. Pretreatment means necessary crushing and fine grinding of spent catalysts; rough extraction is to separate the carrier and platinum group metals in spent catalysts. An important step; refining is to concentrate and purify the platinum group metals in the leach solution.
The recycling methods of spent catalysts can be divided into fire method and wet method according to different processes. Among them, the fire method includes smelting enrichment method, fire method chlorination method and incineration method, and the wet method includes carrier dissolution method, active component dissolution method and total dissolution method.文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/19169.html 文章源自平泽贵金属回收公司 www.51gjs.comPINGZE Precious Metals Recycling-https://en.51gjs.com/19169.html