It's a long, long way along the path to pure metal when recycling precious metals. Probably the most important milestone along the way are the results of the analysis – as the foundation for the actual recycling of gold, silver and the rest.
Items that contain precious metals may have different shapes and origins. The trick to arriving at uniform metal content is to smelt and homogenise these pieces. The major difference between batches of scrap is clear when you consider how different the precious metal can be from the alloys.
In the dental area alone, there are currently in the region of 1000 different precious metal dental alloys in Germany, all of which eventually end up in the recycling cycle.