Premium
Influence of roasting temperature on reactions between ferruginous blende and copper(II) oxide
Author(s) -
Ghodsi Mehdi,
Detournay Jacquy,
Schrobiltgen JeanMarie,
Naessens Georges
Publication year - 1987
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280370208
Subject(s) - roasting , copper , spinel , oxidizing agent , copper oxide , oxide , ferrite (magnet) , materials science , metallurgy , phase (matter) , raw material , inorganic chemistry , chemistry , organic chemistry , composite material
Thermal treatment in an oxidizing atmosphere of a mixture of raw blende (ZnS) and copper(II) oxide enhanced the formation of a mixed ferrite phase at temperature about 600°C. The composition established at 900°C was approximately (0.8 ZnO · 0.2 CuO)Fe 2 O 3 . For the mixture ZnS–CuO, with 5 to 15% CuO by weight, less than 15% copper was involved in the formation of the spinel phase. The increasing copper content in the mixture, roasted above 1000°C, favoured solubilization of iron, even in a weakly acid medium.