Embodiments of a sulfur extraction process comprise treating mined sulfur
ore with a disulfide oil to dissolve the sulfur in the ore. The process
occurs at a temperature less than a temperature sufficient to melt
sulfur. The sulfur crystals may be isolated by cooling the dissolved
sulfur to a temperature sufficient to crystallize the sulfur. An
apparatus for extracting sulfur from sulfur ore comprises a first
receptacle for contacting a disulfide oil with mined sulfur ore at an
elevated temperature sufficient to dissolve sulfur, a second receptacle
coupled to the first receptacle for cooling dissolved sulfur such that
sulfur crystals form, and a filtration apparatus coupled to the second
receptacle for isolating the sulfur crystals. Solvents used in the
apparatus may be recycled.