History
In 1867, miners discovered sulfur in the caprock of a salt dome in Calcasieu Parish, Louisiana, but it was beneath quicksand, which prevented mining. In 1894 the German-born American chemist, Herman Frasch (1852–1914), devised his Frasch method of sulfur removal using pipes to bypass the quicksand. The process proved successful, on December 24, 1894, when the first molten sulfur was brought to the surface. However, the high cost of fuel needed to heat the water made the process uneconomic until the 1901 discovery of the Spindletop oil field in Texas provided cheap fuel oil to the region. The Frasch process began economic production at Sulfur Mine, Louisiana in 1903.
When Frasch's patent expired, the process was widely applied to similar salt-dome sulfur deposits along the US Gulf Coast. The second Frasch-process mine opened in 1912 in Brazoria County, Texas. The US Gulf Coast came to dominate world sulfur production in the early and middle 20th century. However, starting in the 1970s, byproduct sulfur recovery from oil and natural gas lowered the price of sulfur and drove many Frasch-process mines out of business. The last US Frasch sulfur mine closed in 2000. A Frasch mine in Iraq closed in 2003 due to the U.S. invasion of Iraq.
The Frasch process is used to work sulfur deposits in the United States, Mexico, Poland, and Iraq.
Read more about this topic: Frasch Process
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