Recovery of Iridium Catalysts in Precious Metals Trading

In this issue, we will discuss the recovery of iridium catalysts. Before delving into that, let me first explain what iridium catalysts are and where they can be found, followed by how they can be recovered.

According to encyclopedia entries, an iridium catalyst is made by impregnating active metal iridium on alumina or other carriers and then subjecting it to special processing. Depending on the application requirements, the active metal iridium content in the catalyst usually ranges from 0.3% to 30%. It is used for the catalytic decomposition of the monopropellant hydrazine in attitude control engines of aerospace satellites.
Precious Metal Recycling
Having briefly introduced iridium catalysts, let’s discuss where iridium catalyst waste can be found. As mentioned, they are used in aerospace satellites, leading to waste in related industries. Additionally, as catalysts, they are also found in many chemical plants and laboratories.

The structure of the catalyst is decomposed through chemical dissolution or thermal treatment to release iridium. Then, purification of iridium is carried out using precipitation, filtration, and centrifugation methods, highlighting its value in precious metals trading.