硫化鉱焙焼の赤外線吸収スペクトルによる研究

抄録

The roasting of zincblende, pyrite, chalcopyrite, galena and Kuroko-complex sulfide ores of which main constituents are copper, lead, zinc and iron-was studied.
The thermogravimetric analysis and differential thermal analysis of these ores were measured in the air atmosphere and the chemical changes of these ores were investigated with the aid of infra-red spectroscopy and X-ray diffraction analysis. As a reslut of the measurements, it was found that the formation and decomposition of sulfates, which were difficult to discriminate by X-ray analysis because of their small contents, could be confirmed apparently by infra-red absorption spectroscopy. Moreover, sulfates and basic sulfates of copper, zinc, lead and iron showed respectively characteristic absorption band of infra-red spectrum, and was capable to discriminate these sulfate with one another.
The formation of copper ferrite, zinc ferrite and zinc silicate was also confirmed.