sulfurage
/ˌsʌlfəˈrɪdʒ, -ˈrɪʒ/Definitions
1. verb
to obtain sulfur, especially by burning pyrite or other iron sulfide ores
“The geologists had to sulfurage the ore before extracting the valuable minerals.”
2. noun
the process of obtaining sulfur, especially by burning pyrite or other iron sulfide ores
“The sulfurage of the ore was a crucial step in the extraction process.”