Mosaic Phosphate Manufacturing: Creating Renewable Energy and Phosphogypsum Stacks
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Phosphate Fertilizer Manufacturing

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 four facilities in Hillsborough and Polk Counties and has storage and shipping facilities at its Big Bend Marine Terminal and Tampa Marine Terminal facilities. 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. In 2014, our Phosphates Business Unit operations produced 5.8 million GJ of clean energy through cogeneration, the process of converting waste heat to energy, helping Mosaic avoid almost 1 million metric tonnes of CO2e—the equivalent of taking over 200,000 cars off the road.

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 basic 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 products. Click here to review FAQs about phosphogypsum.

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