The solid polyferric sulfate(PFS) was made by oxidation of pyrite cinders with NaClO 3. It was first time discovered by X-rays diffractometry that when the solid PFS was prepared at temperature below 120 ℃ the main p...The solid polyferric sulfate(PFS) was made by oxidation of pyrite cinders with NaClO 3. It was first time discovered by X-rays diffractometry that when the solid PFS was prepared at temperature below 120 ℃ the main phase of the solid PFS is Fe 4.67(SO 4) 6(OH) 2·20H 2O which disappeared when heating was carried out above 130 ℃ for 2 h and complex physical chemical reactions occurred . In thermal spectra two TG mass loss peaks and DTA exothermic peaks at 170～290 ℃ and 27～160 ℃, respectively, were recorded.展开更多
文摘The solid polyferric sulfate(PFS) was made by oxidation of pyrite cinders with NaClO 3. It was first time discovered by X-rays diffractometry that when the solid PFS was prepared at temperature below 120 ℃ the main phase of the solid PFS is Fe 4.67(SO 4) 6(OH) 2·20H 2O which disappeared when heating was carried out above 130 ℃ for 2 h and complex physical chemical reactions occurred . In thermal spectra two TG mass loss peaks and DTA exothermic peaks at 170～290 ℃ and 27～160 ℃, respectively, were recorded.
