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The phosphate mining industry employed 2,200 people. The value of phosphate rock mined was US$2.2 billion. As of 2015, there are 10 active phosphate mines in four states: Florida, North Carolina, Idaho, and Utah. The eastern phosphate deposits are mined from open pits. The western deposits are mined from both surface and underground mines.
Phosphate is also used in animal feed supplements, food preservatives, anti-corrosion agents, cosmetics, fungicides, ceramics, water treatment and metallurgy. The production of fertilizer is the largest source responsible for minerals mined for their phosphate content.
The small island nation of Nauru and its neighbor Banaba Island, which used to have massive phosphate deposits of the best quality, have been mined excessively. Rock phosphate can also be found in Egypt, Israel, Palestine, Western Sahara, Navassa Island, Tunisia, Togo, and Jordan, countries that have large phosphate-mining industries.
Innophos is a North American manufacturer of specialty phosphates, chelated minerals, and other ingredients for the food & beverage, industrial, health, and pharmaceutical industries. Originally formed as the Victor Chemical Company in 1902, the company was later acquired by Stauffer Chemical and subsequently sold to Rhône-Poulenc , which ...
These contain the waste byproducts of the phosphate fertilizer industry. Phosphate is a declining export to China. Previously, significant amounts of rock were shipped to China, where it was processed into phosphate fertilizer. The majority of phosphate mining in Florida is done in the Peace River watershed. Phosphate mining companies use ...
The term phosphate is also used in organic chemistry for the functional groups that result when one or more of the hydrogens are replaced by bonds to other groups. These acids, together with their salts and esters , include some of the best-known compounds of phosphorus, of high importance in biochemistry , mineralogy , agriculture , pharmacy ...
For use in the chemical fertilizer industry, beneficiated rock phosphate must be concentrated to levels of at least 28% phosphorus pentoxide (P 2 O 5), although most marketed grades of phosphate rock are 30% or more. [1] It must also have reasonable amounts of calcium carbonate (5%), and <4% combined iron and aluminium oxides.
The company was originally organized as the Coronet Phosphate Company in 1906. The processing plant near Plant City was constructed and began mining operations in 1908. The phosphate was mined from the surrounding land holdings by a combination of dragline removal of the soil above the phosphate deposits (overburden) and hydraulic pressure ...