An Infrared and Raman Spectroscopic Study of Yellow Gypsum Synthesized from LD Slag Fines

Submit Manuscript | http://medcraveonline.com rate of about 125 kg/t of the steel produced which leads to piling of the slag in the plant. This slag is generally recycled in a waste recycling plant (WRP) so as to separate the magnetic and the nonmagnetic portions by means of mechanical crushing and magnetic separation. The magnetic portion is then recycled and used in the primary steel making process, whereas the non-magnetic portion is further processed at the WRP and stocked separately. This nonmagnetic or reject portion of the slag currently has applications in the road construction sector where it is used as a replacement for aggregate [1-4]. Carbon dioxide sequestration using LD slag has also been an area of growing research [5]. The slag is also useful as an excellent replacement of commercial lime used in fluxing of sinter. Thus, the piling of the reject slag is avoided and conservation of natural resources is also ensured [6]. However, with this high rate of generation of LD slag (about 125 kg per tonne of steel), these applications are not sufficient and further value addition of the slag needs to be explored.