Sulfidation and Sulfur Fixation of Jarosite Residues During Reduction Roasting
Source abstract
Abstract
This study investigated the sulfidation and sulfur fixation of jarosite residues during reduction roasting in the presence of carbon. The effects of roasting temperature and carbon dosage were investigated based on thermodynamic calculation. The results indicated that more than 98 pct of zinc contained in the residue was converted into zinc sulfides, and more than 91 pct of sulfur was fixed in the roasted residue. Carbon addition promoted not only the sulfidation of zinc but also the fixation of sulfur, thereby eliminating SO2 emission. The growth of sulfide particles was strongly influenced by roasting temperature. The size of sulfide particles significantly increased when the temperature was above 1173 K (900 °C) because of the formation of a liquid phase during the roasting process. However, high temperature could increase the consumption of carbon powder.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metal Extraction and Bioleaching · Minerals Flotation and Separation Techniques · Iron and Steelmaking Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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