This Bureau of Mines study evaluates the availability of elemental sulfur produced by the frasch process. Secondary sulfur sources, not included in the analysis, are recovered elemental sulfur, a byproduct from the desulfurisation of sour gas and petroleum, and sulfuric acid from the conversion of sulfur dioxide contained in smelter-refinery offgases. Recovery of sulfur from these sources is nondiscretionary and cannot be readily adjusted to sulfur supply and demand since their production is based on market requirements for sulfur-free and low-sulfur products, and on the removal of sulfur and its compounds from solid, liquid, and gaseous waste effluents for protection of the environment. In this report nine elemental sulfur frasch operations are evaluated, four in Louisiana and five in Texas. Four of these operations are currently producing; five others are shut down.
Ind. Miner., No. 244, Jan. 1988, PP. 39-47