Iron silicate use as land filling aggregate in building and civil works

Iron silicate is formed in the electrical furnace during the copper production process. More precisely, it is the metallurgical slag as result of the silica addition as flux to separate the iron. This chemical product is quite stable and may be used in several applications. One of them is its use as a potential aggregate in building and civil works. Within the circular economy context [1-4], its reuse has been promoted extensively. Given that, the scope of this paper is to characterize the iron silicate and assessing its viability to be used as a land-filling aggregate in building and civil works. Chemical characterization was performed by XRF and by analysis defined in EN 196-2. A granulometric study was developed according to the European standard EN 933-1. The main conclusion is that the use of iron silicate as land filling has a positive environmental impact and may replace natural aggregates typically used in this application.