Efficient Recovery and Purification Techniques for Iridium Catalysts in Precious Metal Recycling

Iridium catalysts hold significant recycling value, so what does the recovery process for iridium catalysts involve? Let’s explore the iridium catalyst recovery process together.

Platinum group metal
The first step in the recovery process is the meticulous pretreatment of these used iridium catalysts, removing surface contaminants and residual organics. This is followed by incineration or high-temperature processing to eliminate organic components from the catalyst, transforming organic substances into gases through oxidation at high temperatures, leaving behind easily processable metal oxides.

The acid leaching step marks a turning point in the iridium recovery process, where strong acids are used to convert the incinerated iridium into iridium ions in the solution. The subtlety of this step lies in choosing the right acid and soaking conditions to optimize the dissolution rate of iridium, while also considering the treatment and separation of other metal impurities.

The extraction and purification stage is the core of the iridium recovery process, employing techniques such as precipitation, extraction, ion exchange, and electrolysis. The aim of these techniques is to efficiently and precisely recover iridium from the acidic solution, while also removing impurities and enhancing the purity of iridium.