Patent ID: 8202342
Filing Date: 2012-06-19
Classification: A45D,C02F,C05B,C05C,C05F,C05G,Y02A,Y02P,Y02W

Abstract:
1. A method of fertilizer manufacture comprising: creating a thixotropic paste from a composition containing biosolids; adding an oxidizing agent to the paste; adding a first amount of ammonia to the paste to produce a pH of 10 or higher; adding an acid to the paste to produce heat and at pH 7.0 or less and a second amount of ammonia to the paste to raise the concentration of free ammonia to above 10,000 ppm; adding a granulating agent to the paste; extruding or granulating the paste; and drying the extruded or granulated paste to a dryness of 90% or more of solids.