Magnetic and X-ray Studies of Nanodispersed Magnetite Synthesized from Chrome Containing Galvanic Sludge

摘要

In the current work we discuss the processes occurring along with the temperature treatment of theudsamples of chromium containing sludge. The results of powder X-ray diffraction and vibrational magnetometryudshow that magnetite forms in the samples with the increase of the calcination temperature higherudthan 500 C. Its quantity increases with the heating, which is clearly visible from the value of saturationudmagnetization obtained for the samples after various temperature treatments.