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The demand for rare earth elements (REEs) in the global economy has incentivised many researchers to search for alternative sources of those metals. For many years fly ashes have been the subject of such research, which indicate that they might be fit for REE recovery. One of the primary problems with recovering those metals from fly ashes faced by process engineers is the form in which they occur. As research shows, REEs occur in fly ashes in the glass and other mineral components (e.g. monazite, xenotime and oth...

With the current situation in world economy, rare earth elements are a valuable resource for many innovative technologies. Low supply of these elements and sparse mining sources concentrated in just a few countries caused REE to become a resource critical to the development of many high-tech branches of the industry. Although rare earth elements are widespread in the nature, due to their low concentration in most minerals, their processing based on flotation, gravity or magnetic separation of a concentrate is ofte...

In Poland information about landfills of power industry waste and the composition of waste deposited on them are largely dispersed. There is no data on the content of rare earth elements in ashes and slags. The article presents a developed information system allowing simultaneous access to a number of data on power industry waste landfills (location, technical and technological data) and data on the rare earth content in deposited ashes and slags. The article presents energy waste landfills (both historical and cu...