X – RAY DIFFRACTION ANALYSIS OF SLUDGE AND DUST PRODUCED IN STEELWORKS

Abstract

Before handling, storage, disposal, these wastes need to be analyzed. In many cases, it is not enough to know only their chemical composition, but it is necessary to determine their mineralogical composition, or to know exactly what is their crystallographic structure. This can be well done using X – ray diffraction device. Examples of sludge from Steelshop and Tin Mill, and dust from Sintering and Steelshop demonstrate current opportunities of X – ray diffraction. The analysis was done using programs of "search - match" type with diffraction database PDF2 – 2004 and crystallographic COD database. Diffraction records were refined by Rietveld method in the TOPAS program.

Keywords

• X – ray diffraction (XRD)
• Rietveld method
• sludge
• dust