From 1949 until 2001, FMC operated the world's largest elemental phosphorus
plant in Power County just west of Pocatello.
5] Content Phosphate Rock 32 3,350 3,575 3,919 5,622 Single superphosphate 18 0 0 0 35 Triple superphosphate 46 790 762 1,114 912 Diammonium Phosphate 46 8,300 7,428 8,277 8,789 Monoammonium Phosphate 51 1,400 1,097 885 758 Phosphoric Acid 100 460 324 491 624 Elemental Phosphorus
229 18 17 18 17 Sources: USDC and Fertecon Research Centre (e) Estimated Table 6 World Phosphate Rock Capacity (M mt/yr) 1993 1990 North America 53.
The likely culprit is a layer of elemental phosphorus
that forms as the P moves from a +3 oxidation state in the trioctylphosphine to a -3 state during formation of [Zn.
Contamination at the FMC facility is the result of 50 years of elemental phosphorus
processing which began in 1949 and ended with the closure of the facility in 2001.
Located on 1,000 acres in southeast Idaho, between Soda Springs and the Wyoming border, the Dry Valley Mine has enough phosphate ore reserves to run FMC's elemental phosphorus
refining plant in Pocatello, Idaho for many years to come, handling a large percentage of the nation's industrial phosphorus needs.
This increase has become necessary due to the continuing escalation in the cost of elemental phosphorus
, a key component of these products, together with significant increases in other raw materials.
vanadium is recovered as a principal mine product, as a coproduct from carnotite ores, and from ferro-phosphorus slag as a byproduct in the production of elemental phosphorus
The remaining two companies mining phosphate rock for production of elemental phosphorus
in Tennessee closed their operation in early 1991.
This increase has become necessary due to sharp and continuing escalation in the cost of elemental phosphorus
, a key component of these products, together with significant increases in other raw materials, utilities and transportation costs.