REACTION PROCESS BETWEEN ZINC OXIDE AND SULFUR DIOXIDE IN THE PRESENCE OF CARBON.

Article abstract of DOI:10.1246/bcsj.54.1708

The reaction products obtained by heating a mixture of ZnO and carbon in a SO//2 stream at various temperatures were examined. The possible reactions during the above process were also examined. When a mixture of ZnO and carbon was heated in a SO//2 stream, the formation of ZnS was observed above 600 degree C. At 800 degree C, all the ZnO used was converted to ZnS. Sulfur was also obtained outside the heating zone, and its amount increased markedly above ca. 750 degree C. The ZnS formed was a mixture of alpha -ZnS and beta -ZnS regardless of the reaction temperature. The process of formation of ZnS can be represented as follows: the reaction between carbon and SO//2 occurs at first to form sulfur.