EMISSION FACTOR DOCUMENTATION FOR AP42 SECTION .
There are a total of 35 phosphate rock processing plants in the United States, 23 of which ... There is no significant emission potential from wet grinding. The small amount of rock that is dried in Florida is dried in directfired dryers at about 120°C (250°F); the moisture content ... (Mg/hr) (250 tons per hour [tons/hr]) of rock will ...