Sulphur = Sulfur

Yellow Lump Sulphur

Yellow Powder Sulphur

Bright Granular Sulphur

Sulfur Production:

"Crude" sulfur is produced from the Frasch process or recovered from "sour" natural gas or petroleum.  Although termed "crude", this sulfur possesses a minimum purity of 99.5 percent and is suitable for a majority of uses. The impurities consist primarily of trapped organic matter.

Recovered Sulfur :

Recovered sulfur from petroleum refining and from "sour" natural gas has surpassed Frasch process sulfur as the world's most important source of supply. Recovered sulfur tonnages are expected to increase as the demand for clean-emission fuel continues.

Sulfur from the Claus Process:

In petroleum refining, sulfur is reacted with hydrogen to form hydrogen sulfide. In "sour" natural gas, the sulfur occurs as hydrogen sulfide. In either case, the hydrogen sulfide is converted to elemental sulfur. Recovered sulfur is produced by counter-current absorption to collect the hydrogen sulfide in a solution. The solution is normally an alkanolamine from which the gas is distilled, then burned to produce a flue gas consisting of hydrogen sulfide and sulfur dioxide. This is cooled and catalyzed in a converter to produce sulfur vapor and water. The sulfur vapor is removed from the mixture by scrubbing with makeup liquid sulfur.

Sulfur Uses:

Sulfur is an element used for everything from adhesives to matches.  Its most common use is as a hardening agent in the manufacture of rubber products, such as tires. The table below illustrates the types of sulfur bought most often for each use or application. For example: Explosives are most often manufactured using commercial sulfurs.  

Specification