Raw material
a. Sulfur
b. Hydrogen sulfide and organosulfur
c. Sulfide ores such as pyrite, sphalerite, and cinnabar (mercury sulfide)
Process
a. Sulfur dioxide is the product of the burning of sulfur:
- S8 + 8 O2 → 8 SO2
b. The combustion of hydrogen sulfide and organosulfur compounds proceeds similarly.
- 2 H2S + 3 O2 → 2 H2O + 2 SO2
c. The roasting of sulfide ores such as pyrite, sphalerite, and cinnabar (mercury sulfide) also releases SO2:
- 4 FeS2 + 11 O2 → 2 Fe2O3 + 8 SO2
- 2 ZnS + 3 O2 → 2 ZnO + 2 SO2
- HgS + O2 → Hg + SO2
Product
Sulfur dioxide, SO2
Used for
Precursor to sulfuric acid, preservative, winemaking, reducing agent, refrigerant
Production facility
Port Adelaide, SA
Export
Sucre, Bolivia
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