In order to be used
as crop nutrients or animal feed, phosphate rock must be converted
to a water-soluble form. Mosaic manufactures fertilizer
at three facilities in Hillsborough and Polk Counties. Click here to view a map of our global
operations and locations.
However, there's more to the
manufacturing story than just our fertilizer and animal feed
products. Mosaic is one of the largest renewable energy producers
in Florida, generating enough "clean and green" energy to power
100,000 homes. Click here to learn more about cogeneration and
Mosaic's green practices.
This manufacturing process
begins when the rock is finely ground to uniform size. Sulfuric
acid is then added to form phosphoric acid, which is concentrated
through evaporation, reacted with ammonia, and granulated to
produce two important phosphate/nitrogen crop nutrients -
diammonium phosphate (DAP) and monoammonium phosphate
(MAP).
These products are later blended to
form the nutrients commonly found on bags of lawn fertilizer (e.g.,
10-10-10), representing levels of nitrogen, water-soluble
phosphorous and potassium. Click here to learn more
about Mosaic's products.
Phosphoric acid is also used to
manufacture monocalcium and dicalcium phosphate products, which are
sold to the animal feed ingredient industry as important diet
supplements for use in swine, poultry and cattle feed.
Phosphogypsum, commonly referred to as
gypsum or calcium sulfate, is a by-product of the production of
phosphate fertilizer. It is not associated with any of Mosaic's
mining projects in south-central Florida. Because it is mildly
radioactive, gypsum is stored in stacks adjacent to manufacturing
facilities, under exacting standards established by the U.S.
Environmental Protection Agency and the Florida Department of
Environmental Protection. Safe and productive uses for
phosphogypsum are currently under study by the Florida Industrial and Phosphate Research
Institute, an independent state research agency.